Navigation Links
Paraquat resistance discovered in major weed
Date:10/19/2010

Scientists at the University of Adelaide have discovered new cases of herbicide resistance in annual ryegrass, one of the world's most serious and costly weeds.

For the first time, researchers have found that annual ryegrass has developed resistance to paraquat, the second most important "knockdown" herbicide used by cropping farmers.

Weed management experts Dr Peter Boutsalis and Associate Professor Christopher Preston, from the University's Waite Research Institute, made the discovery in samples taken from two separate farming properties near the South Australian town of Naracoorte.

Annual ryegrass is a major weed worldwide. It is particularly damaging to crops in countries with a Mediterranean climate, with Australia, South Africa, Argentina, Spain and Italy among the worst affected.

Dr Preston says farmers should be concerned about the development of herbicide resistance.

"This discovery has major implications for farmers," Dr Preston says.

"Paraquat is the only viable herbicide alternative to the most commonly used herbicide, glyphosate. With more than 100 annual ryegrass populations in Australia already having developed resistance to glyphosate, the discovery of paraquat resistance means that none of the currently available knockdown herbicides can be guaranteed to control ryegrass," he says.

"The paraquat resistant ryegrass was discovered on sites where pasture seed crops have been grown for a long time and paraquat extensively used."

Dr Preston says farmers should rotate their knockdown herbicides in alternate seasons and adopt integrated weed management practices.


'/>"/>

Contact: Dr. Christopher Preston
christopher.preston@adelaide.edu.au
61-883-037-237
University of Adelaide
Source:Eurekalert

Page: 1

Related biology news :

1. Breast cancer treatment resistance linked to signaling pathway
2. New estrogen receptor found to be key player in tamoxifen resistance
3. Montana State University researchers find gene that regulates molds resistance to drugs
4. Lead-flapping objects experience less wind resistance than their trailing counterparts
5. New papers offer insights into process of malarial drug resistance
6. Describing soils: Calibration tool for teaching soil rupture resistance
7. Stroma genomic signature predicts resistance to anthracyclin-based chemotherapy in breast cancer
8. Decreasing insulin resistance prevents obesity-related cardiovascular damage
9. Breaking the barrier: Discovery of anti-resistance factors and novel ocean drugs
10. Building strong bones: Running may provide more benefits than resistance training, MU study finds
11. NIH funds development of resistance-breaking insecticides to reduce malaria transmission
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/16/2017)... 2017  Genos, a community for personal genetic ... received Laboratory Accreditation from the College of American ... laboratories that meet stringent requirements around quality, accuracy ... "Genos is committed to maintaining the ... honored to be receiving CAP accreditation," said ...
(Date:2/13/2017)... SAN FRANCISCO , Feb. 13, 2017 /PRNewswire/ ... a centralized platform that is designed to enhance ... the latest release in the RSA Fraud & ... to enable organizations to leverage additional insights from ... anti-fraud tools to better protect their customers from ...
(Date:2/10/2017)... Research and Markets has announced the addition of ... Commercial Aspects" to their offering. ... Biomarkers play an important ... selection of treatment as well for monitoring the results. There ... modern medicine. Biochip/microarray technologies and next generation sequencing are also ...
Breaking Biology News(10 mins):
(Date:3/28/2017)... -- Summary This report provides all the ... partnering interests and activities since 2010. Description The Partnering ... into the partnering activity of one of the world,s leading ... prepared upon purchase to ensure inclusion of the most up ... will be delivered in PDF format within 1 working day ...
(Date:3/28/2017)... March 28, 2017  Viking Therapeutics, Inc. ("Viking") (NASDAQ: ... of novel therapies for metabolic and endocrine disorders, today ... , Ph.D., will deliver a corporate presentation at H.C. ... Conference, being held April 3, 2017 at the St. ... for this presentation are as follows: ...
(Date:3/28/2017)... ... March 28, 2017 , ... Currently symptomatic therapies for ... recent study published in STEM CELLS suggests that human neural stem cell (hNSC) ... to produce more neural cells. , Strategies involving transplantation of these cells ...
(Date:3/28/2017)... Triangle Park, NC (PRWEB) , ... March 28, ... ... development company engaged in the development of a new orally administered treatment for ... Advisory Board. , CEO John Didsbury states, “As we seek to uniquely treat ...
Breaking Biology Technology: