Most rape clean

1 May 1998

Most rape clean

LODGING or a site history of the disease may put rape crops at high risk from sclerotinia, but most crops are so far at a low disease risk, say advisers.

"Crops coming into flower are clean," says ADAS Notts senior consultant Andrew Wells. "We are not finding alternaria and it has not been warm enough for sclerotinia."

But where crops have lodged the alternaria risk is far greater, he notes. "Growers should be more prepared to treat these, but bear in mind yield potential is lower."

"A lodged crop is an ideal micro-climate for alternaria and botrytis," adds Richard Elsdon of United Oilseeds. Later flowering sprays should protect against sclerotinia and alternaria, he says. &#42

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