WESTMINSTER, Colorado – April 07, 2021 – As the number of weed populations resistant to multiple herbicides continues to soar, it is clear that better tools are needed to help growers rapidly diagnose resistance issues. With more timely access to information, they can take earlier, proactive steps to keep resistant weeds from spreading.
A recent article in the journal Weed Science describes a new rapid “leaf-disk assay” that uses chlorophyll fluorescence emissions to determine whether a weed is resistant to various systemic and contact herbicides. In contrast to time-consuming and labor-intensive greenhouse screenings and population studies, leaf-disk assay results are available in about 48 hours.
In a recent research study, scientists were able to use the fluorescence technique to rapidly detect resistance to glyphosate, dicamba and fomesafen in broadleaf and grass weeds, including Palmer amaranth, waterhemp, kochia and goosegrass.
The assay clearly separated populations susceptible to herbicides from those that are highly resistant. It exhibited less sensitivity, though, in identifying populations with lower levels of resistance.
Though further work is needed to fine-tune the new test for greater precision, researchers say it holds great promise.
“In addition to the speed, the leaf-disk assay requires fewer technical skills,” says Chenxi Wu, research scientist at Bayer CropScience. “That means more weed science labs will be able to use the technique to identify multiple resistances efficiently – helping growers take more immediate and informed actions.”
To learn more, read the article “A nondestructive leaf-disk assay for rapid diagnosis of weed resistance to multiple herbicides” 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.
Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.
Website of source
- Fraunhofer INT and Digital Science collaborate to bring Fraunhofer’s Technology Foresight Tool KATI together with Dimensions data – PRNewswire
- Data Science Platform Market Size To Register 26.9% CAGR By 2027 Based On Increasing Data Volume & Adoption Of Sophisticated Tools For Data Management | Million Insights – PRNewswire
- Sciences Dean Stubbs Applauds New Quantum Science Program, Additional Research Endeavors | News – Harvard Crimson
- Science of reading in NC: We need common understanding – EducationNC – EdNC
- Ariel Lumbatis, Jeffery Torrance win at GEARSEF Regional Science Fair – Dothan Eagle
- Woodard science students excel during pandemic – KYMA
- Science Sunday: Spring-time animals 4/11 – WFSB
- Why are there still so few black scientists in the UK? – The Guardian
- A final flyby for asteroid Bennu and 5 other top space and science stories this week – CNN