New Zealand: Fungicide resistance in barley crops

The Foundation for Arable Research announced on March 23 that the confirmation of fungicide resistance in powdery mildew on barley in Canterbury has serious implications for the entire arable sector. The foundation communicated that the samples taken so far, resistance to strobilurin fungicides is highest among barley mildew.

FAR states it is important that growers now limit their use of strobilurins, or risk development of fullscale resistance to the fungicide.It says when wheat powdery mildew resistance was discovered in Europe in the late 1990s, strobilurin fungicides had little effect after two seasons. Accroding to FAR , it has been confirmed that the New Zealand mutation is identical to that found in Europe.

Andrew Gillanders, the Federated Farmers grains spokesperson, says growers have been doing all they can to slow the development of resistance. Mr Gillanders says another way of tackling powdery mildew is by growing crop varieties that are resistant to it.

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