The effects of direct harvesting and drying systems on the incidence and control of neck rot (Botrytis allii) in onions |
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| Authors: | R. B. MAUDE M. R. SHIPWAY A. H. PRESLY D. O'CONNOR |
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| Affiliation: | National Vegetable Research Station, Wellesbourne, Warwick CV35 9EF U.K.;Kirton Experimental Horticultural Station, Kirton, Boston, Lincs PE20 1EJ, U.K.;National Vegetable Research Station, Wellesbourne, Warwick CV35 9EF, U.K.;Horticultural Consultant, Woodbine House, 64a Eastwood Road, Boston, Lines PE21 0AH, U.K. |
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| Abstract: | Direct harvesting, with mechanical removal of the foliage (topping), of onion crops followed by post-harvest drying at ambient temperatures ( c . 18°C) resulted in an increase in the incidence of onion neck rot ( Botrytis allii ).
The disease was substantially reduced if topped onions were dried at 30°C with an airflow of 425 m3 air/h/tonne. The treatment was most effective if the crop was removed from the field for drying within 48 h of topping thus avoiding severe infection of the damaged green tissues of the necks of onions. |
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