The new SOLA for Rovral WG will help growers blitz Botrytis in harvested cabbages, said Richardson.
Cabbages left untreated could suffer up to 45% crop loss, he said. Botrytis, or grey mould, typically becomes increasingly troublesome the longer the storage period.
"Left untreated, Botrytis will cause major and costly spoilage of the crop and is disastrous for crops destined for processing," said Richardson.
"Two key ways of reducing losses to this disease are to minimise the damage to heads during harvest and to use a post-harvest drench of Rovral WG."
The product, based on the active ingredient iprodione, was applied after harvesting Dutch white cabbage and red cabbage at a dosage rate of 67g per 100 litres of water.
It can be applied by a hand-held lance attached to a sprayer or an independent drenching system, but treated cabbages must not be removed from store for at least eight weeks after treatment.
"Grey mould is a really serious in-store disease in cabbages," said Richardson. "There are no other fungicide treatments approved for control of this disease."
The Allium & Brassica Centre was founded 17 years ago to offer independent advice to growers and co-operatives on bulb onion and brassica production and storage. It is based in Boston, Lincolnshire.
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