Botrytis gray mold

General Information: Caused by Botrystis Cincerea. Seed borne disease. Excessive vegetative growth, close, spacing, and spreading varieties favor disease development.       Symptoms : Symptoms are usually seen at flowering time when the crop canopy is fully developed. Lack of pod setting is the first indication of the disease. Lesions girdle the stem completely. Rotting of affected leaves and flowers. Water-soaked and irregular lesions on the pod. The pods contain either small, shrivelled seeds or no seeds at all. Lesions on stem, leaves, and pods Pycnidial bodies on pods

Control :   Sowing late. Adopting wider spacing. Intercropping with linseed. Avoiding excessive irrigation, and vegetative growth. Adopting compact varieties. Seed treatment with thiram 3 g kg-1 or vinclozolin or Dithane M-45 (maneb). Foliar application of vinclozolin or carbendazim or carbendazim plus thiram.