Researchers want farmers to help determine whether wild radish is joining the ranks of such weeds as annual ryegrass and wild oats by developing herbicide resistance.
Greg Code of the Rutherglen Research Institute says it is important to know the herbicide resistance status of wild radish because it is a spreading problem in many cropping areas.
Farmers should be careful to check seed they buy for any sign of wild radish contamination, not only to avoid introducing a weed to their farm, but also because wild radish contains a chemical which affects other seeds.
Farmers who want to contribute to the wild radish herbicide resistance survey can contact Mr Ray Miller at the Rutherglen Research Institute on 060 304 500.
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