The researchers found that the combined treatment reduced cumulative ammonia volatilization by 27.1 percent compared with conventional urea fertilization during a complete rice-wheat rotation. The result is particularly notable because the amended organic fertilizer was applied with a 30 percent reduction in mineral nitrogen input, yet crop productivity was largely maintained. The findings point toward a potential strategy for making fertilizer use more efficient without simply asking farmers to apply less and accept lower yields. Instead, the approach aims to control what happens to nitrogen after it enters the soil.

“Reducing fertilizer input is only useful if farmers can maintain crop production at the same time,” said corresponding author Haijun Sun. “Our results suggest that combining biochar with dicyandiamide in organic fertilizer can help balance these goals by retaining nitrogen, limiting ammonia losses, and supporting crop growth.” That balance is central to the global fertilizer challenge. Nitrogen is indispensable for plant proteins, chlorophyll, and growth, but when it is converted into gaseous ammonia and lost from farmland, farmers may need to spend more on replacement fertilizer while nearby communities and ecosystems absorb the pollution.

The experiment covered two complete rice and wheat rotations from 2022 to 2024 in greenhouse soil columns. The researchers compared conventional urea fertilization with three treatments that used lower amounts of mineral nitrogen: conventional organic fertilizer, organic fertilizer amended with biochar, and organic fertilizer containing both biochar and dicyandiamide. The soil-column design allowed the team to monitor nitrogen movement and ammonia emissions under controlled conditions over successive crop seasons. Unlike a short laboratory test, the two-year rotation captured repeated changes in soil chemistry, crop uptake, and fertilizer behavior across both flooded rice and relatively dry wheat production.

Among the treatments, the combination of biochar and dicyandiamide produced the most consistent result. Across the full rotation, it was the only organic fertilizer treatment that significantly reduced cumulative ammonia emissions compared with conventional urea. Biochar alone reduced cumulative ammonia volatilization by 5.9 percent compared with conventional organic fertilizer, while adding both biochar and dicyandiamide achieved a much larger 33.6 percent reduction relative to that treatment. These results suggest that the two amendments may work through complementary mechanisms rather than simply adding the same effect twice.

Biochar is a carbon-rich material produced by heating biomass under oxygen-limited conditions. Its porous structure can alter soil water retention, nutrient adsorption, and the chemical environment surrounding fertilizer particles. In this study, the researchers linked biochar application to better regulation of ammonium concentrations and pH in the soil and the floodwater covering rice. This matters because ammonia volatilization is strongly influenced by the balance between ammonium ions and dissolved ammonia. Higher pH shifts more ammonium toward gaseous ammonia, making it easier for nitrogen to escape. By moderating this chemical environment, biochar may help keep nitrogen in a less volatile form for longer.

Dicyandiamide, commonly known as DCD, is a nitrification inhibitor that slows the microbial conversion of ammonium into nitrite and nitrate. That process can be beneficial under some conditions because plants can absorb nitrate, but rapid nitrification can also increase the risk of nitrogen leaching and nitrous oxide production. By delaying the transformation, DCD may extend the period during which ammonium remains available for plant uptake or retention in the soil. The researchers observed altered nitrogen transformation patterns in the amended treatment, indicating that the inhibitor helped reshape the timing and pathways of nitrogen cycling rather than merely reducing one isolated emission.

The study also examined soil bacteria and found that biochar-containing fertilizers reduced the abundance of Nitrospirota, a bacterial group associated with nitrite oxidation, one of the key steps in nitrification. The shift suggests that the amendments may change the microbial niches involved in nitrogen conversion by modifying factors such as pH, moisture, carbon availability, and nutrient distribution. However, the researchers emphasize that their microbial analysis was based on taxonomic profiling. Detecting changes in the abundance of a bacterial group does not directly prove that a particular organism performed a specific biochemical function, so future work using functional genes, enzyme measurements, and isotope tracing will be needed to confirm the mechanisms.

The environmental gains did not appear to come at the expense of another major greenhouse gas. Cumulative nitrous oxide emissions showed no significant differences among the fertilizer treatments, an important finding because strategies that suppress ammonia can sometimes redirect nitrogen losses into other pathways. The combined treatment also maintained rice yields at levels comparable with conventional fertilization, while conventional organic fertilizer and biochar-only organic fertilizer reduced rice grain yields. The researchers estimated through Monte Carlo simulations that the combined treatment could generate potential benefits of approximately 36,600 Chinese yuan per hectare per year under the experimental conditions, reflecting fertilizer savings and reduced nitrogen-related environmental and health costs.

The result is promising, but it is not yet a universal prescription for farmers. The experiment was conducted in controlled soil columns rather than commercial fields, where rainfall, temperature swings, soil types, irrigation practices, fertilizer placement, and management decisions can vary dramatically. The economic estimate also depends on local fertilizer prices, crop yields, pollution costs, and the availability and quality of biochar and dicyandiamide. Field-scale trials will be essential to determine whether the ammonia reductions persist under real farming conditions and whether the treatment remains affordable and practical across different rice-wheat systems. Even with those limitations, the study offers a striking example of how combining carbon-based soil amendments with targeted nitrogen management could help turn fertilizer from a major source of pollution into a more efficient tool for feeding a growing population.

Subject of Research: Nitrogen fertilizer efficiency, ammonia volatilization, biochar, dicyandiamide, soil nitrogen cycling, and rice-wheat crop production

Article Title: Ammonia mitigation and economic gains from dicyandiamide and biochar-amended organic fertilizer: a 2-year rice-wheat rotation study

News Publication Date: 22-Jun-2026

Web References: https://doi.org/10.48130/aee-0026-0016; Agricultural Ecology and Environment

References: Huang W, Wang L, Gong X, Bian R, Lu X, et al. 2026. “Ammonia mitigation and economic gains from dicyandiamide and biochar-amended organic fertilizer: a 2-year rice-wheat rotation study.” Agricultural Ecology and Environment 2: e019. DOI: 10.48130/aee-0026-0016

Image Credits: Wang Huang, Lisha Wang, Xueliu Gong, Rongjun Bian, Xinyue Lu, Yuanqing Bu, Yunyi Liang, Haijun Sun, Yanfang Feng, Changlei Xia, Jiang Jiang, and Lihong Xue

Keywords: ammonia volatilization, biochar, dicyandiamide, organic fertilizer, nitrogen fertilizer, nitrogen cycling, rice-wheat rotation, soil microbiome, nitrification inhibition, sustainable agriculture, crop productivity, agricultural pollution

Sustainability certification schemes are designed to convert complex environmental and social promises into information that consumers can trust. A label may indicate that cocoa was grown without clearing rainforest, that farmers planted shade trees, that children were not employed, or that hazardous pesticides were avoided. To verify these claims, auditors visit farms, collect measurements and upload observations to digital monitoring systems. The process assumes that the information recorded in the field accurately reflects conditions on the ground. But the new study suggests that the data itself can become a target for manipulation when the people collecting it face incentives to help farms qualify for certification or financial rewards.

The researchers examined monitoring records from 407 cocoa farms in Côte d’Ivoire, the world’s largest cocoa-producing country. Each farm participated in a tree-planting programme operated by an international cocoa buyer and exporter. Farmers were encouraged to plant shade trees among their cocoa trees, a practice intended to improve the long-term health of plantations, protect soil, moderate temperatures and support biodiversity. Shade trees can also provide habitat for birds and insects and reduce some of the ecological pressures associated with intensive cocoa production. As part of the programme, farmers initially reported how many trees they had planted, after which auditors visited the farms to count them.

The researchers created an experimental monitoring system in which farmers could receive a reward for providing accurate information. Auditors entered their tree counts into smartphones, and the system immediately indicated whether the number matched the farmer’s original declaration and therefore whether the farmer would qualify for the reward. Auditors could also alter their records after the visit. This design allowed the researchers to distinguish ordinary measurement errors from changes that appeared to be strategically directed at helping farms pass the assessment. The data provided an unusual opportunity to observe how incentives influenced environmental reporting in real time rather than relying only on interviews or retrospective surveys.

The pattern was striking. When the farmer’s initial tree count met the required criterion on the first attempt, auditors subsequently changed the record in only about 6 to 7 percent of cases. When the farm failed to meet the criterion, however, auditors later altered the data in roughly 33 percent of cases. The changes were not distributed randomly across the monitoring system. Records relating to other criteria that had no bearing on the reward were not similarly modified. According to the researchers, this selective pattern indicates that the alterations were not simply caused by confusion, technical problems or general data-cleaning practices. Instead, auditors appeared to adjust the specific information needed to make a farm pass.

The auditors themselves did not receive a direct payment for entering accurate information, creating a mismatch between their formal responsibilities and their practical incentives. Helping farmers pass could preserve working relationships, reduce conflict during field visits or create opportunities to share the resulting benefits. Farmers, meanwhile, had a clear reason to report numbers that would qualify them for the programme. These overlapping interests can undermine the independence of verification, particularly in supply chains where auditors are hired, managed or repeatedly engaged by organisations that also depend on high participation rates and positive certification results. The problem is therefore structural rather than the result of a few dishonest individuals.

The study also tested whether a relatively simple change could reduce manipulation. The farms were divided into two groups. In one group, auditors knew the threshold used to determine whether the farmer’s original tree count qualified for the reward. In the other, the relevant criterion was concealed from them. When auditors did not know the target value, the proportion of manipulated records fell from approximately 25 percent to 11 percent—more than a 50 percent reduction. Concealing the pass threshold did not eliminate the possibility of inaccurate reporting, but it made it substantially more difficult to tailor a revised record to the desired outcome. The finding suggests that audit systems may become more reliable when field inspectors cannot predict exactly which figures will trigger approval or payment.

The implications extend beyond cocoa certification. The European Union’s Deforestation Regulation is scheduled to apply to large and medium-sized companies from the end of December 2026 and to small companies from the end of June 2027. The regulation requires products such as cocoa, coffee, soy, palm oil, beef, rubber and timber sold in the European market to be linked to land that was not deforested after 2020. Importers and sellers will need to demonstrate that products meet the rules, often by mapping the boundaries of farms and combining those records with satellite observations of forest cover. If initial field measurements are inaccurate, later satellite analysis may be attached to the wrong location or incomplete boundaries, allowing recently cleared land to appear compliant.

The researchers argue that technology alone will not solve the problem. Smartphones, geolocation tools and satellite imagery can improve traceability, but they cannot guarantee that the original information entered into a system is truthful or complete. Effective oversight may require concealed assessment criteria, independent audits, random rechecks, separation between commercial buyers and verification agencies, and penalties for deliberate misreporting. More fundamentally, the authors say that certification cannot compensate for the economic pressures embedded in the cocoa trade. Cocoa producers in West Africa receive only a limited share of the value generated by processing and selling chocolate, leaving many with little financial capacity to invest in shade trees, soil restoration or other sustainable practices.

The study’s authors say lasting progress will require transforming how revenue is distributed across the supply chain. Processing more cocoa in producing countries could allow producers to retain a larger share of the profits, while better prices and long-term purchasing agreements could create genuine incentives for environmental stewardship. Without such changes, sustainability programmes may continue to ask farmers and auditors to meet ambitious standards within a system that rewards short-term compliance more reliably than long-term conservation. The new findings turn a familiar promise on a chocolate wrapper into a much larger question: can sustainability claims be trusted when the people responsible for verifying them benefit from making farms appear greener than they are?

Subject of Research:
The integrity of sustainability monitoring and certification systems in cocoa supply chains, with a focus on false reporting of shade-tree planting data in Côte d’Ivoire.

Article Title:
False reporting undermines the integrity of supply chain sustainability initiatives

Web References:
https://doi.org/10.1126/science.aea9565

References:
Cammelli F, Six J, Garrett RD. “False reporting undermines the integrity of supply chain sustainability initiatives.” Science. 13 August 2026. DOI: 10.1126/science.aea9565

Image Credits:
Federico Cammelli

Keywords:
cocoa farming, sustainability certification, false reporting, environmental audits, shade trees, deforestation, Côte d’Ivoire, supply chains, EU Deforestation Regulation, conservation, chocolate, agricultural monitoring

The research, titled “Price premiums for meat products with sustainability labels,” examines how sustainability-related information is reflected in retail meat prices. Labels can function as a form of market communication: they tell consumers that a product was produced under particular conditions, such as restrictions on feed, production methods or the use of certain agricultural inputs. In economic terms, the label may reduce information asymmetry, a situation in which sellers know more about a product’s origins than buyers do. A certification or production claim gives shoppers a signal they can use when comparing otherwise similar packages. The price difference associated with that signal is known as a price premium. Although a premium can indicate strong consumer willingness to pay, it does not automatically measure the product’s full environmental benefit or prove that the label alone caused the higher price.

The contrast between chicken and beef highlights how complicated this market has become. An average 7 percent increase for organic-labelled chicken is relatively modest compared with the 33 percent increase associated with grass-fed beef. Such differences may arise from several interacting mechanisms. Organic production can require more expensive feed, certification and compliance procedures, while grass-fed beef may involve longer growth periods, greater land requirements and different herd-management practices. Retail prices also incorporate transportation, processing, packaging, retailer margins and regional supply conditions. At the same time, consumers may attach a particularly strong value to grass-fed beef because the claim evokes images of natural grazing, animal welfare or lower-impact farming. The study’s results therefore show the combined outcome of production economics and consumer perception rather than a simple ranking of which label is “most sustainable.”

Technically, studies of this kind compare the prices of labelled and unlabelled products while accounting for characteristics that can otherwise distort the comparison. Meat prices depend on more than sustainability claims: cut, weight, brand, fat content, freshness, packaging format, store type and geographic location can all influence the amount shoppers pay. A price-premium analysis attempts to isolate the association between a label and the final retail price after considering these product attributes. The resulting percentage is an average market difference, not a guaranteed markup on every package. Some labelled products may sell for far more or less than the average, and the premium can change with promotions, shortages, changes in consumer demand or shifts in certification standards.

The findings arrive as consumers, food companies and policymakers debate whether sustainability labels make environmental information more accessible or simply make responsible choices more expensive. Labels can encourage producers to adopt practices that reduce reliance on synthetic inputs, alter animal diets or change land-management systems, but they can also divide the market according to consumers’ ability to pay. If products with environmental or welfare claims consistently cost more, lower-income households may be less able to participate in those markets. That creates a tension at the heart of sustainable food policy: labels may reward improved production practices, yet the price signal can limit who benefits from them and who can afford to support them.

The study also underscores why consumers should avoid treating sustainability labels as interchangeable. “Organic,” “grass-fed” and other claims refer to different production systems and are governed by different standards. A label may address feed, chemical inputs, livestock access to pasture, animal-management practices or a combination of factors, but it may not provide a complete account of greenhouse-gas emissions, biodiversity, water use or farm economics. For example, a production method that reduces one environmental pressure could increase another depending on climate, land availability and management. The observed price premiums therefore cannot be translated directly into a single environmental score. They reveal how the marketplace responds to particular claims, not a definitive measure of the overall sustainability of each product.

The authors’ conclusions are especially relevant for retailers and food manufacturers deciding how to communicate production practices. A substantial premium may signal that a label has strong consumer appeal, giving producers an incentive to pursue certification or adopt systems that qualify for the claim. Yet a premium can also encourage “label proliferation,” in which packages carry numerous environmental messages that are difficult for shoppers to compare. Clear definitions, transparent verification and consistent standards are essential if price differences are to reflect meaningful distinctions rather than marketing power. For researchers, the results provide evidence that the economic value of sustainability information is product-specific. Further work will be needed to determine how premiums change over time, whether they reflect actual production costs, and how much of the additional price reaches farmers rather than intermediaries.

The research was supported in part by the U.S. Department of Agriculture’s National Institute of Food and Agriculture through Hatch Project 7007883 and by the Economic Research Service through Cooperative Agreement 58-3000-1-0097. The authors are based in the United States and the Republic of Korea. They caution that the findings and conclusions are those of the researchers and should not be interpreted as an official determination or policy of the USDA or the U.S. government. Published in PLOS One on 12 August 2026, the study offers a vivid snapshot of a rapidly changing food market: sustainability claims are no longer merely statements on a package, but measurable economic signals capable of shifting the price of dinner by single digits for some products and by one-third for others.

Subject of Research: The price premiums associated with sustainability labels on meat products sold in the United States.

Article Title: Price premiums for meat products with sustainability labels

News Publication Date: 12-Aug-2026

Web References: https://doi.org/10.1371/journal.pone.0353190

References: “Price premiums for meat products with sustainability labels,” PLOS One, DOI: 10.1371/journal.pone.0353190

Image Credits: S. Laiba Ali, Unsplash, CC0

Keywords: sustainable meat, meat prices, sustainability labels, organic chicken, grass-fed beef, food economics, consumer behavior, price premiums, food labeling, agricultural sustainability

The research examined nearly 3,500 wildfires that burned conifer-dominated forests across western and boreal North America between 2012 and 2023. Rather than treating each fire as a single event defined mainly by its final size, the scientists analyzed more than 33,000 individual daily spread events. This allowed them to connect the rate at which flames advanced with the ecological damage left behind. Their central finding was clear: fire speed was not simply a measure of how quickly a fire consumed land. It was also a predictor of how completely forests were destroyed and how difficult recovery would become.

“People often focus on the size of a wildfire because that’s what makes headlines,” said lead author Jonathan Coop, a professor at Western Colorado University. “But how fires burn is as important as how much they burn. In forests, fire speed not only increases acres burned but also leads to outsized impacts to each of those acres.” The distinction is important because two fires can burn the same number of hectares while producing very different ecological outcomes. A slower fire may leave patches of surviving trees, whereas a rapidly advancing fire can generate intense heat and flames that kill trees across nearly continuous expanses.

The researchers measured fire spread against indicators of post-fire forest survival, including the proportion of an area experiencing near-total tree mortality and the distance to surviving trees capable of producing seeds. Many conifer species in western North America depend heavily on nearby mature trees for natural regeneration. Their seeds generally do not travel vast distances, meaning that the presence of living trees around a burn can determine whether seedlings appear in the following years or decades. When high-severity fire removes those trees across broad areas, the landscape can become functionally isolated from its nearest seed sources.

This mechanism helps explain why rapid wildfires may leave a legacy that extends far beyond the flames themselves. In a severely burned stand, the loss of mature trees eliminates not only the current forest canopy but also the reproductive infrastructure needed to rebuild it. Seedlings must then establish under increasingly difficult conditions, including hotter soils, lower moisture availability, intense sunlight and competition from grasses or shrubs. If drought persists, young trees may die before reaching maturity. Repeated fires arriving before a new forest develops can further prevent conifers from re-establishing, locking the ecosystem into a different state.

“When severe fires leave large expanses without seed trees, the forest has a harder time recovering and, in some places, may not recover as a forest at all,” said Camille Stevens-Rumann, director of the Colorado Forest Restoration Institute and a professor at Colorado State University. The study’s findings suggest that this risk is not distributed evenly across burned landscapes. It rises as fires move faster, because rapid spread is commonly associated with extreme weather conditions such as low humidity, high winds, dry vegetation and prolonged drought. These conditions can drive flames through forest fuels with exceptional intensity and reduce the time available for suppression efforts.

The study builds on earlier work showing that a relatively small number of extreme fire-spread events account for a disproportionate share of the land burned in western North America. Climate change is increasing the likelihood of the hot, dry and windy conditions that support those events. The new analysis adds an ecological dimension to that trend: the most extreme spread days may also be responsible for a disproportionate share of the forest-conversion risk. In other words, climate-driven fire behavior could alter not only the amount of forest lost in a given year but also the type of ecosystem that occupies the landscape afterward.

The potential transformation is especially significant because forests store carbon, regulate water, provide wildlife habitat and support communities through recreation and natural-resource economies. A shift from conifer forest to open shrubland or grassland can change snow accumulation, streamflow, soil stability and the timing of water delivery to downstream ecosystems. It can also affect species that depend on forest structure, from cavity-nesting birds to mammals requiring continuous canopy cover. Although some post-fire transitions can increase biodiversity or create valuable habitat, a rapid, widespread loss of forests may reduce ecological resilience when it is driven by repeated extreme events rather than by the normal range of fire variability.

The researchers point to forest management and restoration as possible tools for reducing the risk, while emphasizing that no intervention can eliminate the influence of a rapidly warming climate. Thinning dense stands, using prescribed fire and allowing wildfires to burn under non-extreme conditions can reduce the amount and continuity of combustible material in some forests. These approaches may slow fire growth or lower intensity, potentially preserving the living trees that provide seeds. After a fire, managers may also need to identify areas where natural regeneration is unlikely and consider targeted restoration, including the planting of locally appropriate tree species. Such actions are complicated by uncertainty over which species will remain suited to future climates.

“Wildfire has always been part of western forests,” Coop said. “What’s changing is the pace and impacts of fires. As extreme events become more common in a hotter, drier climate, we can’t count on forests to persist or grow back the way they have in the past.” The researchers argue that the speed of a fire should therefore become a central measure in assessing wildfire risk. A fast-moving blaze is not merely a larger version of a slower one; it can create a fundamentally different pattern of mortality, seed limitation and ecosystem recovery. As the American West and Canada confront increasingly extreme fire seasons, the study suggests that the most consequential question may not be how many acres burned, but whether the forest still has the biological capacity to return.

Subject of Research: Extreme wildfire spread, forest mortality, seed availability and post-fire ecosystem change in western and boreal North America.

Article Title: Faster, bigger, more severe: Extreme wildfire spread sets the stage for forest ecosystem change in western and boreal North America

Web References: https://www.science.org/doi/10.1126/sciadv.aeg5802

References: Science Advances, DOI: 10.1126/sciadv.aeg5802; research supported by the U.S. National Science Foundation, Southwest Climate Adaptation Science Center and Western Wildland Environmental Threat Assessment Center.

Keywords: Wildfires, forest fires, extreme fire spread, forest ecosystems, forestry, climate change, drought, forest regeneration, seed dispersal, ecological restoration, wildfire severity, grasslands, shrublands, North America.

Heather Kelly, field crops pathologist in the University of Tennessee Department of Entomology and Plant Pathology, has received a prestigious Fulbright Distinguished Scholar Award for two one-month trips to Brazil in 2026 and 2027. This award is administered by the U.S. Department of State and the Fulbright Foreign Scholarship Board.

Kelly traveled to the University of São Paulo Luiz de Queiroz College of Agriculture (ESALQ) in June 2026 and will complete the second trip in June 2027, collaborating with international researchers to improve soybean disease management. In February 2027, Kelly will also travel to Brazil alongside Extension agents and graduate students from the University of Tennessee Institute of Agriculture (UTIA), establishing additional exchange opportunities.

Her research program focuses on diseases affecting Tennessee’s major row crops, including soybeans, cotton, corn, wheat, canola and others. During her time in Brazil, the world’s leading soybean producer, Kelly will use artificial intelligence, bioinformatics and other advanced technologies to model soybean disease epidemics. Because agricultural diseases, pests and pesticide resistance often emerge in Brazil before the United States, these projects will help predict potential threats to Tennessee row crop production.

“Extension is about education and sharing new ideas,” says Kelly. “I’m excited to not only bring knowledge back to Tennessee to share with others, but also to enable colleagues at UT and within Extension to gain firsthand knowledge by studying abroad. Together, we can improve agricultural production for farmers worldwide.”

Kelly has been a faculty member at UTIA for 14 years, following four years at the University of Florida as a biological scientist and graduate assistant. Based at the West Tennessee AgResearch and Education Center in Jackson, Kelly serves as UTIA’s Integrated Pest Management (IPM) program lead. She works alongside nine faculty members conducting research in agronomy, entomology, weed management, plant pathology, soil health and pesticide education. Together, they generate and share information that improves crop yields and quality of life for farmers and communities across Tennessee’s 95 counties.

Fulbright Distinguished Scholar Awards are the most prestigious appointments in the Fulbright Scholar Program, available to accomplished faculty, researchers, administrators and established professionals who have more than seven years of experience in their discipline or area of expertise. Through these affiliations, they expand their professional networks and often seed future research, innovation and institutional partnerships. Kelly will develop a detailed study-abroad curriculum in Brazil and beyond for future graduate students and Extension agents interested in integrative agricultural and natural resource programs.

Learn more about Kelly’s research at utcrops.com.

The University of Tennessee Institute of Agriculture is comprised of the Herbert College of Agriculture, UT College of Veterinary Medicine, UT AgResearch, and UT Extension. Through its land-grant mission of teaching, research and outreach, the Institute touches lives and provides Real. Life. Solutions. to Tennesseans and beyond. utia.tennessee.edu.

The study, led by Professor Naomi Ori and doctoral researcher Nave Man of The Hebrew University of Jerusalem, was conducted with scientists from the Leibniz Institute of Plant Biochemistry in Germany and Israel’s Agricultural Research Organization, the Volcani Institute. The team investigated a molecular pathway controlled by auxin, a plant hormone that influences cell division, tissue growth, organ formation and reproductive development. Auxin does not act alone. Its effects are interpreted through a network of response factors, including auxin response factors, or ARFs, which bind to regulatory regions of genes and activate or repress their expression. The activity of these factors is modulated by small regulatory RNAs, including miR167, creating a finely balanced system in which developmental signals can be adjusted as the plant’s conditions change.

The researchers focused on two closely related tomato genes, SlARF8A and SlARF8B, together with miR167, which acts as a molecular brake on ARF8 activity. MicroRNAs are short RNA molecules that regulate gene expression after transcription, typically by guiding the degradation of messenger RNA or reducing its translation into protein. In this case, miR167 helps determine how much ARF8 protein is available in developing floral tissues. By modifying different components of this regulatory module with CRISPR gene-editing technology, the scientists were able to examine how changes in auxin signaling affected the formation and function of reproductive organs. The experiments effectively separated the contributions of the individual genes while also revealing how strongly their effects depend on genetic balance.

The results showed that SlARF8A and SlARF8B operate together to coordinate the development of stamens and pistils, the flower’s male and female reproductive structures. This coordination is essential because successful fruit production depends on both organs reaching functional maturity at compatible times. The researchers also found that one of the ARF8 genes contributes to the timing of anther dehiscence, the opening of the pollen-bearing anthers. If anthers open too early or too late, pollen may fail to reach the stigma when it is receptive. Under cold conditions, such timing problems can become more severe because low temperatures slow development and can reduce pollen viability. The findings therefore connect a specific auxin-response module not only to organ formation, but also to the physical event that releases pollen.

One combination of gene edits produced a particularly striking reproductive change. The modified plants were able to initiate fruit development without fertilization, a phenomenon known as parthenocarpy. In tomatoes, parthenocarpy can produce seedless fruit because the ovary begins to grow even when pollen does not successfully fertilize the ovules. This trait is valuable under conditions in which pollen is damaged or pollen transfer is unreliable. It can also be useful for processing tomatoes, where seedless fruit and reduced amounts of jelly surrounding the seeds may simplify industrial handling. In the edited plants, fruit initiation occurred earlier than in unmodified plants under all of the conditions tested, suggesting that the genetic changes affected the developmental threshold required for the ovary to begin expanding.

The advantage became most evident in winter greenhouse experiments. Early in the growing season, the gene-edited plants produced more than 18 times as many fruits as regular tomato plants. By the end of the experiment, they had produced six times more ripe tomatoes and ten times the total weight of ripe fruit. The difference was not limited to the number of developing fruit. Most tomatoes on the modified plants had already turned red and reached ripeness, while most fruit on the unmodified plants remained green. This pattern indicates that the edits improved the reliability and timing of reproductive output during cold conditions rather than simply increasing the number of flowers. The plants were also more compact, with a greater proportion of their growth directed toward fruit production instead of stems and leaves.

The study suggests that the miR167–ARF8 system acts as a developmental coordination mechanism rather than as a single switch for fruit formation. Too much or too little activity in a regulatory network can disrupt organ development, but an appropriate adjustment may allow the plant to bypass a reproductive bottleneck. In the edited tomatoes, changing both the signal-promoting ARF8 factors and the miR167 restraint revealed a combination that preserved the coordinated development of reproductive tissues while enabling fruit initiation without fertilization. This distinction is important for crop improvement because simply increasing auxin signaling could produce undesirable effects, including abnormal growth or defective flowers. The researchers’ results instead point to the value of tuning a specific regulatory relationship within the broader hormone-response pathway.

Professor Ori said the findings show how tomato plants use a carefully balanced genetic system to coordinate flower development, pollen release and the beginning of fruit growth. The work also illustrates why reproductive traits can be difficult to improve through conventional breeding alone. Flowering and fruit set are influenced by many genes and are highly sensitive to the environment, yet the miR167–ARF8 module appears to connect several of these processes at a central point. By identifying that connection, scientists may be able to design plants that maintain reproductive productivity when temperatures make normal fertilization difficult. Such varieties could be especially useful in greenhouses, winter production systems and regions where sudden cold spells interrupt the growing season.

The findings do not yet establish that the edited plants are ready for commercial cultivation. Further research will be needed to determine how the genetic changes affect fruit size, texture, flavor, nutritional composition and post-harvest performance. Scientists will also need to test the trait in diverse agricultural tomato varieties and under field conditions, where light, humidity, pathogens, nutrient availability and fluctuating temperatures may alter the outcome. The long-term behavior of the plants, their interactions with pollinators and their performance across multiple generations will also require evaluation. Even so, the study provides a detailed molecular explanation for why certain tomato plants can continue setting fruit when cold suppresses ordinary fertilization. By manipulating the miR167–ARF8 auxin-response module, researchers have opened a promising avenue for stabilizing tomato production and extending reliable harvests into colder months.

Subject of Research: Tomato flower development, fruit set, auxin signaling and plant genetic regulation

Article Title: The miR167–ARF8 module coordinates stamen–pistil development and fruit set in tomato

News Publication Date: 11-Aug-2026

Web References: https://doi.org/10.1111/nph.71503

References: New Phytologist; DOI: 10.1111/nph.71503

Image Credits: Nave Man

Keywords: tomato, CRISPR gene editing, miR167, ARF8, auxin signaling, parthenocarpy, seedless fruit, cold stress, flower development, fruit set, plant genetics, crop science, winter harvests

Biochar is made by heating plant or other organic biomass in a low-oxygen environment, a process known as pyrolysis. The resulting carbon-rich material is traditionally added to soil, where its porous structure can improve water storage, provide surfaces for nutrient retention, and support microbial communities. When biochar is processed into nanoparticles, however, its behavior can change substantially. The smaller particles have a much larger surface area relative to their volume, greater pore accessibility, and more reactive chemical groups, allowing them to interact more closely with soil minerals, dissolved nutrients, microorganisms, and plant roots.

The review, which synthesizes research published between 2013 and 2026, reports dramatic differences between nanobiochar and conventional biochar. Across the studies examined, nanobiochar showed median increases of 650 percent in surface area, 480 percent in pore volume, and 320 percent in cation exchange capacity. Cation exchange capacity is a key measure of a soil or amendment’s ability to hold positively charged nutrients such as potassium, calcium, magnesium, and ammonium. By temporarily retaining these ions, nanobiochar may reduce their loss through drainage while keeping them available for plant uptake.

The reported agricultural effects were also notable. The compiled evidence indicated a 77 percent improvement in nitrogen-use efficiency, a 39 percent increase in water retention, and an 18 percent rise in crop yield compared with relevant conventional treatments. Other studies found that nanobiochar could reduce nutrient leaching by approximately 30 to 50 percent. Its nanoscale pores and reactive surfaces may help capture dissolved nutrients before they move beyond the root zone, while its interaction with soil particles can increase the amount of water held in forms accessible to crops.

Nanobiochar may also act as a defensive barrier against toxic contaminants. According to the review, amendments reduced plant uptake of heavy metals in contaminated soils by roughly 84 to 95 percent. In some investigations involving cadmium-contaminated soil, rice plants accumulated 86.5 to 95.1 percent less cadmium in their tissues after nanobiochar treatment. This effect may result from adsorption, the attachment of metal ions to the material’s surface, as well as changes in soil pH, chemical bonding, and the formation of less mobile metal compounds. Such mechanisms could be particularly valuable in farmland affected by industrial pollution, mining, wastewater, or long-term fertilizer use.

The material’s influence may extend beyond chemistry. Because nanoparticles can move through soil pores and reach root surfaces, nanobiochar may alter the environment surrounding roots, known as the rhizosphere. Researchers have associated its use with increased plant-available water, improved nutrient acquisition, and greater activity of beneficial soil microorganisms. These microbes can assist with nutrient cycling, organic matter decomposition, and plant growth regulation. The review also describes links between nanobiochar and improved plant performance during drought and salinity stress, conditions that can disrupt cellular water balance, restrict nutrient transport, and generate damaging oxidative molecules.

The researchers examined several techniques used to produce nanobiochar, including mechanical ball milling, sonication, centrifugation-assisted separation, and hydrothermal synthesis. Each method can produce particles with different sizes, shapes, pore structures, surface chemistries, and contaminant profiles. Those differences are important because nanobiochar is not a single uniform substance. Its performance depends on the original biomass, the temperature and duration of pyrolysis, the post-processing method, and the chemical characteristics of the receiving soil. This variability could complicate comparisons between experiments and make it difficult to establish universal application rates.

The review places nanobiochar within a broader vision of climate-resilient farming. It could be combined with conservation tillage, water-efficient cropping systems, precision agriculture, and the circular use of agricultural residues. Turning crop waste into a soil amendment could potentially reduce open-field burning, recycle carbon, and return nutrients to farmland. Yet the researchers emphasize that nanobiochar should not be treated as automatically safe simply because conventional biochar is widely studied. Its small size may make it more mobile and reactive, increasing the possibility of movement through soil, uptake by organisms, or unintended interactions with aquatic systems.

Potential risks include phytotoxicity, oxidative stress in plants, disruption of soil organisms, and ecological effects when particles accumulate at high concentrations. Nanobiochar produced from contaminated feedstocks could also carry unwanted metals or organic compounds into agricultural soils. The authors therefore call for long-term field trials, standardized characterization methods, chronic toxicity studies, monitoring of particle movement, and regulatory frameworks designed specifically for nanoscale soil amendments. Laboratory results may reveal what nanobiochar can do under controlled conditions, but only carefully designed field research can establish whether those benefits remain reliable across different climates, soil types, crops, and seasons.

Nanobiochar is not yet a ready-made solution to every agricultural problem, but the review suggests that its multifunctionality deserves serious attention. A single engineered amendment capable of improving nutrient retention, water availability, contaminant immobilization, microbial activity, and stress tolerance could become an important component of sustainable farming. The technology’s future, however, will depend on balancing its remarkable surface chemistry and biological potential with rigorous safety testing. If researchers can standardize production and demonstrate durable benefits without unacceptable ecological costs, nanobiochar could move from an intriguing laboratory material to a powerful tool for climate-resilient agriculture.

Subject of Research: Nanobiochar as a multifunctional soil amendment for soil health, plant stress tolerance, contaminant control, and climate-resilient agriculture.

Article Title: Nanobiochar functions as a multifunctional amendment for soil health, plant stress tolerance, and climate-resilient farming

News Publication Date: 2-Jul-2026

Web References: https://doi.org/10.48130/bchax-0026-0018; https://www.maxapress.com/bchax

References: Adil M, Gul I, Leghari AM, Bashir S, Shah SAA, et al. 2026. “Nanobiochar functions as a multifunctional amendment for soil health, plant stress tolerance, and climate-resilient farming.” Biochar X 2: e020. DOI: 10.48130/bchax-0026-0018.

Image Credits: Muhammad Adil, Isma Gul, Amna Munir Leghari, Safdar Bashir, Syed Ali Asghar Shah, Hasnain Farooq, Siqi Lu & Yu Tao

Keywords: Nanobiochar, biochar, sustainable agriculture, soil health, climate-resilient farming, plant stress tolerance, drought, salinity, nutrient retention, heavy metal contamination, soil microorganisms, water retention, agricultural biotechnology

E. cecorum is commonly found in poultry environments, and many of its strains are harmless. However, pathogenic strains can cause arthritis, bone infections and lameness, creating serious animal-welfare problems and economic losses for poultry producers. Because pathogenic and nonpathogenic strains can share many of the same genes, identifying the genetic features associated with disease has been challenging.

The research team, led by Aranyak Goswami of the Arkansas Agricultural Experiment Station’s Center for Agricultural Data Analytics, examined the organization of genes within genomic islands. These are segments of DNA that bacteria often acquire from other microorganisms through horizontal gene transfer. Genomic islands can carry genes involved in antibiotic resistance, bacterial survival, movement of DNA and virulence, making them important regions for understanding how pathogens emerge.

Rather than treating the bacterial genome as a simple list of genetic components, the researchers analyzed it as a structured map. They investigated which genes occurred near one another, the order in which they appeared and the way groups of neighboring genes formed recurring units known as genomic-island cassettes. This architecture provided information that could be missed when genes are examined individually.

“The machine-learning model recognizes patterns in gene order much like it recognizes patterns in language,” Goswami said. In the same way that a language model can learn that certain words frequently appear together, the computational system learned that particular combinations and arrangements of bacterial genes were associated with pathogenic strains. The approach therefore captures relationships among genes rather than relying only on the presence or absence of individual DNA sequences.

For the proof-of-concept study, the researchers analyzed the genomes of 145 E. cecorum strains isolated from poultry. The dataset included 95 nonpathogenic strains and 50 pathogenic strains capable of causing illness. The analysis found that disease-associated strains were more likely to contain genomic islands enriched in genes linked to antimicrobial resistance and the transfer of genetic material between bacteria.

Those findings do not mean that every bacterium carrying such genes will necessarily cause disease. Instead, the researchers describe the system as an exploratory classification and research tool. It identifies patterns that may help scientists investigate why some bacterial lineages become harmful, while also providing clues about how resistance and virulence traits move through bacterial populations.

Current monitoring methods for E. cecorum often depend on culturing the bacterium or screening for specific genes. Such techniques remain valuable, but they may overlook broader genomic relationships. The new pipeline could complement these approaches by evaluating the wider context in which genes occur. Additional testing with larger and more geographically diverse datasets will be necessary before the method can be used for routine flock surveillance or diagnostic decision-making.

The researchers believe the strategy could eventually be adapted to other bacterial species affecting animals, humans, wildlife and plants. Goswami’s team is beginning to examine Enterococcus faecalis, a close relative of E. cecorum and a frequent cause of hospital-acquired infections in humans. They also plan to apply the pipeline to Escherichia coli and other bacteria to study how nonpathogenic lineages acquire the genomic configurations associated with disease. The study, published in Frontiers in Microbiology, demonstrates how machine learning and comparative genomics can reveal hidden signals in bacterial DNA and may help researchers track the evolution of emerging pathogens.

Subject of Research: Animals

Article Title: Genomic-island cassette architecture provides interpretable signal for exploratory classification of poultry-associated Enterococcus cecorum lineages

News Publication Date: 7-Jul-2026

Web References: https://doi.org/10.3389/fmicb.2026.1882753

References: Frontiers in Microbiology, DOI: 10.3389/fmicb.2026.1882753

Image Credits: UA University Relations photo by Chieko Hara

Keywords: artificial intelligence, machine learning, deep learning, computational biology, bacterial pathogens, Enterococcus cecorum, genomic islands, genomic architecture, antibiotic resistance, poultry disease, pathogen surveillance, comparative genomics

Lignin is particularly attractive because it is not simply a passive filler. Its complex aromatic structure contains phenolic and aliphatic hydroxyl groups that can participate in chemical reactions and bind with other substances. The polymer also absorbs ultraviolet radiation, displays antioxidant and antimicrobial activity, and can be engineered to degrade at different rates. These characteristics give lignin an unusually broad technological range, allowing it to function in coatings, hydrogels, particles, films, and composite materials. Instead of burning or disposing of lignin as a low-value by-product, manufacturers could potentially convert it into products designed to make agricultural inputs more efficient and less polluting.

One major opportunity involves controlled-release fertilizers. Conventional fertilizers can dissolve rapidly, allowing nitrogen and other nutrients to escape through runoff, leaching, or volatilization before plants can absorb them. Lignin can be used as a coating or incorporated into a nutrient-carrying matrix to create a physical barrier around fertilizer granules. Water and dissolved nutrients then move more slowly through the material, extending nutrient availability and potentially improving nitrogen-use efficiency. Chemical modification can further alter lignin’s swelling, solubility, and binding behavior, making it possible to tune how quickly nutrients are released under different soil conditions.

Lignin-based materials could also become multifunctional soil amendments. When combined with hydrophilic polymers or other components, lignin can form hydrogels and porous composites capable of retaining water and releasing it gradually near plant roots. Such materials may help reduce irrigation demand and limit nutrient loss in drought-prone soils. Lignin’s functional groups can also interact with metal ions, raising the possibility of using lignin-containing composites to immobilize or capture contaminants. By improving water retention, soil aggregation, and chemical stability, these materials could support crops exposed to salinity, drought, or degraded soil conditions.

The review also explores lignin as a delivery platform for pesticides. Many active ingredients used in crop protection have poor water solubility, degrade under sunlight, or disperse unevenly across fields. Lignin-based particles, emulsions, and coacervates can encapsulate these compounds, shielding them from ultraviolet radiation and helping them disperse more effectively. The structure of the carrier can be designed to release its payload gradually or respond to environmental triggers such as pH, moisture, or enzymatic activity. In principle, this could maintain effective concentrations near target organisms while reducing the amount of pesticide that reaches surrounding soil and water.

Another potential application is in agricultural films and seed coatings. Plastic mulch films can conserve moisture and suppress weeds, but their persistence creates a major waste problem when fragments remain in soil. Lignin can contribute UV protection, biodegradability, and mechanical reinforcement to mulch films and sprayable coatings. It may also be incorporated into paper-based mulches or seed-coating formulations, where it can help regulate moisture transfer and protect seeds during early development. The combination of sunlight absorption and natural antimicrobial activity could make lignin useful in materials designed to protect seeds and young plants without relying entirely on conventional plastics.

However, the review stresses that lignin is not a standardized substance. Its molecular composition varies according to plant species, cultivation conditions, and the industrial process used to extract it. Differences in molecular weight, aromatic linkages, functional groups, solubility, and branching can significantly affect how lignin behaves in a coating or composite. Two batches described simply as “lignin” may therefore perform very differently. This variability can complicate film formation, chemical modification, manufacturing consistency, and the prediction of how a product will behave after it enters soil.

To improve reliability, researchers are developing methods to separate lignin into more uniform fractions or modify its molecular structure. The review discusses solvent fractionation, gradient acid precipitation, membrane filtration, ionic-liquid processing, chemical derivatization, grafting, and depolymerization. These approaches can adjust lignin’s reactivity, particle size, solubility, and interaction with nutrients or pesticides. The authors emphasize the importance of linking molecular structure to material properties and then to real agricultural performance. Such structure–property–performance relationships could allow manufacturers to select or engineer lignin for a specific task rather than treating it as a one-size-fits-all ingredient.

Moving from laboratory demonstrations to working farms will require more than promising chemistry. The authors identify unresolved questions about long-term environmental fate, degradation products, ecological safety, production costs, and compatibility with existing equipment and farming practices. Much of the current evidence comes from laboratory experiments or greenhouse trials, while agricultural products must withstand changing weather, mechanical stress, microbial activity, and repeated exposure to soil and water. Lignin-derived alternatives may also remain more expensive than established materials such as conventional fertilizer coatings, lime, or plastic mulch until production reaches a larger scale.

The review presents lignin valorization as part of a wider transition toward circular, low-carbon agriculture rather than as a single solution to the sector’s environmental challenges. The authors call for standardized structural fingerprints for industrial lignin, predictive models, greener processing methods, and long-duration field studies that monitor soil health, degradation products, crop responses, and non-target organisms. They also point to emerging connections with nanotechnology, plant microbiomes, and responsive delivery systems. If those scientific and engineering barriers can be overcome, a material once treated largely as industrial residue could become a versatile platform for fertilizers, soil conditioners, crop-protection systems, films, and seed coatings—turning biomass waste into tools for a more resource-efficient food system.

Article Title: Lignin valorization toward eco-friendly agricultural inputs

News Publication Date: 6-Aug-2026

Web References: https://doi.org/10.1007/s44246-026-00294-0

References: Wang, Hongliang, et al. “Lignin valorization toward eco-friendly agricultural inputs.” Carbon Research. DOI: 10.1007/s44246-026-00294-0

Image Credits: Xinran Zhang, Yitong Wang & Hongliang Wang

Keywords: lignin, sustainable agriculture, controlled-release fertilizers, soil amendments, pesticide delivery, agricultural films, seed coatings, biomass valorization, biodegradable materials, soil carbon, circular agriculture, environmental chemistry

The findings, published in Aquaculture, show that goldfish, grass carp, silver carp and black carp are highly resistant to the effects of CyHV-3. These species may occasionally become infected, but they rarely develop serious disease and appear to eliminate the virus much more efficiently than common carp. They also transmit the pathogen poorly, making them what researchers describe as “inefficient carrier hosts.”

CyHV-3 is a contagious herpesvirus that primarily threatens common carp and ornamental koi. The virus can spread through direct contact between fish, contaminated water and equipment, and the movement of infected animals. Once introduced into a susceptible population, it can cause extensive mortality, creating major economic losses for fish farmers and potentially altering the structure of wild freshwater communities.

Common carp are among the most widely farmed freshwater fish in the world. They are raised for food, stocked in ponds and reservoirs, and kept as ornamental koi. Their broad distribution creates numerous opportunities for CyHV-3 to move between aquaculture facilities and natural environments. Because other carp species often occupy the same ponds, rivers and lakes, scientists have been concerned that apparently healthy fish might harbor the virus and spread it silently.

To examine that possibility, the research team used experimental exposure conditions designed to resemble natural transmission. Healthy fish were placed in tanks containing common carp infected with CyHV-3. The virus spread readily among the common carp, while only a small proportion of the other species became infected. Most of those fish remained healthy, suggesting that exposure alone does not necessarily lead to productive infection or severe disease in these hosts.

The investigators then used direct injection to bypass some of the fish’s natural barriers to infection. This approach exposed the animals to the virus more directly and allowed the researchers to compare their responses under a stronger challenge. The contrast remained pronounced. Common carp developed the characteristic severe effects associated with CyHV-3 infection, whereas goldfish, grass carp, silver carp and black carp showed little clinical illness and rapidly reduced the amount of virus in their bodies.

That distinction is important because infection, disease and transmission are not identical processes. A fish may come into contact with a virus and even contain detectable viral material without becoming an efficient source of new infections. For a pathogen to spread successfully, it must replicate to sufficient levels, leave the host and reach another susceptible animal. The experiments indicated that the non-common carp species generally failed to complete this chain efficiently.

The researchers also tested whether apparently recovered or minimally affected fish could pass CyHV-3 back to common carp. Transmission was possible, but it occurred at a much lower efficiency than transmission from infected common carp. In practical terms, these related species may contribute occasional infections under some conditions, yet they are unlikely to maintain the explosive transmission required to drive large-scale outbreaks. The principal epidemiological risk remains infected common carp themselves.

The results may help refine disease-control strategies in aquaculture and freshwater management. Measures such as testing and quarantining common carp, limiting the movement of infected fish, disinfecting equipment and monitoring water transfers remain essential. The study does not indicate that other carp species are completely incapable of carrying CyHV-3, nor does it eliminate the need for surveillance. Instead, it suggests that control efforts should prioritize the most competent host rather than treating every related species as an equal threat.

The biological mechanisms behind the resistance observed in these fish remain an important subject for future research. Their ability to restrict viral replication and clear infection could reveal host traits that prevent CyHV-3 from causing severe disease. Understanding those defenses may eventually support the development of improved breeding programs, diagnostic tools or targeted treatments for common carp. For now, the study provides a more precise picture of how CyHV-3 moves through mixed fish communities—and offers evidence that the presence of several close carp relatives is unlikely, by itself, to ignite a major outbreak.

Subject of Research: Animals

Article Title: Differences in CyHV-3 infection and infectivity among common carp and Asian carp species

Web References: https://doi.org/10.1016/j.aquaculture.2026.744303

References: Aquaculture. DOI: 10.1016/j.aquaculture.2026.744303

Keywords: Koi herpesvirus; cyprinid herpesvirus 3; CyHV-3; common carp; goldfish; grass carp; silver carp; black carp; viral transmission; aquaculture; fish disease; carrier hosts; freshwater ecosystems