Beans and Linseed are Left Facing Big Pest Onslaught - Andy Goulding - Farmers Weekly

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A familiar tale of one extreme to the other: we started the year with an awful winter and early spring, but we are now leaving behind an exceedingly hot and dry May.

The residing moisture is available for established autumn-sown and early sown spring combinable crops (of which there are few).

There doesn’t look to be many lazy rooting spring crops, but none the less, a little flurry of rain has just kept everything establishing.

Wheat T2 is on the last leg of the run and crops are still all over the place, with the seasonal calendar unable to get things to an equilibrium due to the huge array of planting dates and poor early growing conditions.

We’ve gone from exceptionally high septoria pressure to low, and rates have been tuned accordingly.


Moisture for establishment is not an issue with potatoes that have been planted late, as it can be found around the seed tuber, and there’s plenty of energy left in there.

Ridge moisture may reduce efficacy of the residual herbicides, which we so majorly rely on.

However, with little moisture in the outermost part of the potato ridge, weed emergence is also delayed this spring.

Product selection and dose rate are going to be geared around the half-life of the active ingredient, as we strive for persistency when the weed flushes come.

Beans have been also subject to the same dilemma, with residuals not achieving the desired control.

In instances where board-leaved weeds will become competitive, post emergence products are being used.  Be mindful of the narrow application window and potential for herbicide damage – these are best applied during the cooler part of the day.

Despite mainly being late drilled maize is mostly up and away and looking good with no cold snap to hold it back.

Post-emergence herbicides are a little off yet, but I will be using other chemistry as terbuthylazine starts its phase out from the market.