Grey mould: Botrytis cinerea
Symptoms:
- Infected fruits turn slightly brownish.
- The fungus advances into the inner flesh resulting in a soft, watery mass of decayed tissue contained in a slightly intact, brown skin.
- The pathogen sporulates on the surface of fruit and the typical, powdery, grey mould stage.
- The disease can spread by contact.
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Brown spot |
Watery mass |
Grey mould |
Management:
- Sodium bisulphate which releases SO2 when in contact with moist air can be used with packing material.Dibromotetrachloroethane, sodium-o-phenyl phenate, 2-acetyl-3-hydroxyfuran (Eckert and Sommer, 1967).
- Grey mould can be controlled by prompt cooling.
Image source: www.plantmanagementnetwork.org/pub/php/diagnosticguide/2008/apple/ |