Saturday, May 21, 2022
SCIENMAG: Latest Science and Health News
No Result
View All Result
  • Login
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US
No Result
View All Result
Scienmag - Latest science news from science magazine
No Result
View All Result
Home SCIENCE NEWS Agriculture

Study points to the challenges of harvest-time weed seed controls in Pacific Northwest

March 2, 2021
in Agriculture
0
Share on FacebookShare on Twitter

IMAGE

Credit: Photo taken by Judit Barroso on May 24, 2016.

WESTMINSTER, Colorado – March 02, 2021 – Herbicide-resistant weeds have fueled a growing demand for effective, nonchemical weed controls. Among the techniques used are chaff carts, impact mills and other harvest-time practices that remove or destroy weed seeds instead of leaving them on the field to sprout.

A recent article in the journal Weed Science explores whether such harvest-time controls would be effective against downy brome, Italian ryegrass, feral rye and rattail fescue – weeds that compete with winter wheat in the Pacific Northwest. Researchers set out to determine whether the four retained a significant number of seeds at harvest time and whether those seeds were high enough on the plant to be captured.

Data collected from five commercial farms in Oregon and Washington over three growing seasons revealed the following insights:

  • Weed seed production, seed retention at harvest and plant height differed among the four weed species and varied across field locations and growing years.
  • Environmental conditions were found to influence when weed seeds started to shatter and drop and at what rate that shattering occurred.
  • Though further research is needed, seed production and shattering patterns also appeared to be influenced by agronomic factors, including herbicide use, row spacing, and the height and vigor of the crop.
  • Feral rye exhibited the greatest potential for harvest-time control due to slower shattering rates and higher seed retention (54 percent on average). The remaining weeds in the study had an average seed retention at harvest of less than 50 percent.
  • The low height of rattail fescue at harvest makes that species a poor candidate for harvest-time weed seed controls.

“We found that the efficacy of harvest-time weed controls in winter wheat varies by weed species and is dependent on the environment and growing conditions,” says Carolina San Martín, Ph.D., of Oregon State University. “It is also clear that when harvest-time controls are used, growers should harvest as soon as possible after crop maturity to capture as many of the remaining weed seeds as possible.”

###

To learn more, read the article “Seed Retention of Grass Weeds at Wheat Harvest in the Pacific Northwest” online.

About Weed Science

Weed Science is a journal of the Weed Science Society of America, a nonprofit scientific society focused on weeds and their impact on the environment. The publication presents peer-reviewed original research related to all aspects of weed science, including the biology, ecology, physiology, management and control of weeds. To learn more, visit http://www.wssa.net.

Media Contact
Natalie Warrender
[email protected]

Original Source

https://www.cambridge.org/core/journals/weed-science/article/abs/seed-retention-of-grass-weeds-at-wheat-harvest-in-the-pacific-northwest/7BC66C80666EFDEFB734F892109261C7

Related Journal Article

http://dx.doi.org/10.1017/wsc.2020.91

Tags: AgricultureFertilizers/Pest Management
Share25Tweet16Share4ShareSendShare
  • Figure 1. Silicon particles in a lithium-ion battery protected by a polymer binder mesh

    Charging a green future: Latest advancement in lithium-ion batteries could make them ubiquitous

    70 shares
    Share 28 Tweet 18
  • Resolution time of COVID vaccine-related lymphadenopathy

    66 shares
    Share 26 Tweet 17
  • Long-hypothesized ‘next generation wonder material’ created for first time

    66 shares
    Share 26 Tweet 17
  • Null results research now published by major behavioral medicine journal

    312 shares
    Share 125 Tweet 78
  • What the new Jurassic Park movie gets wrong: Aerodynamic analysis causes a rethink of the biggest pterosaur.

    67 shares
    Share 27 Tweet 17
  • Venous thromboembolism: Less recurrencies with low-dose apixaban compared to discontinuation of the anticoagulant after negative D-dimer

    64 shares
    Share 26 Tweet 16
ADVERTISEMENT

About us

We bring you the latest science news from best research centers and universities around the world. Check our website.

Latest NEWS

Understanding how sunscreens damage coral

SUTD develops design-based activity to enhance students’ understanding in electrochemistry

New Curtin research resurrects ‘lost’ coral species

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 187 other subscribers

© 2022 Scienmag- Science Magazine: Latest Science News.

No Result
View All Result
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US

© 2022 Scienmag- Science Magazine: Latest Science News.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
Posting....