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Australian Herbicide Resistance Initiative (AHRI)

Wild radish random AHRI survey of Western Australia

Tag Archives | wild radish

Australian Herbicide Resistance Initiative (AHRI)

Wild radish random AHRI survey of Western Australia

The most recent AHRI random resistance survey by researcher Mechelle Owen reflects exactly these observations. The survey visited 500 fields in 2015 and found only 65 wild radish populations in crop compared to 96 in the previous survey in 2010. There were fewer populations of wild radish found in the crop in the north, and more populations found throughout the rest of the state. As you may expect, herbicide resistance levels in wild radish have generally increased a little between the 2010 and 2015 surveys. Click through to read more.

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Australian Herbicide Resistance Initiative (AHRI)

When does a seed become a seed?

When does a fracas become a melee? When does a cake become a soufflé? When does a wild radish seed become a viable seed, after which time spraying with a crop topping herbicide becomes futile? We know that for grass weeds we need to crop top or spray top sometime between flowering and milky dough of the grass seed (depending on the herbicide) to achieve high levels of control, but this timing is not well understood for broadleaf weeds such as wild radish. In the early 2000’s, Dr Aik Cheam from DAFWA did a great job of describing the critical wild…

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