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Progress towards integrated control of storage rots of Cox apples.

Berrie, A. M.;

Bulletin OILB/SROP Year: 1997 Vol: 20 Issue: 9 Pages: 23-31 Ref: 8 ref.

1997

บทคัดย่อ

Progress towards integrated control of storage rots of Cox apples.

A survey of fungal rotting in stored Cox apples drenched or undrenched with fungicide prior to storage showed that losses due to rots in many (up to 50%) orchards were significant in most seasons and merited control measures. However, fruit from many (29-44%) orchards stored until March had losses of <2% and therefore need not have been treated with fungicide. The losses were related to orchard site. The main fungi responsible for losses were Botrytis cinerea, Phytophthora syringae, Nectria galligena, Monilinia fructigena, Gloeosporium sp. and Penicillium sp. A system of rot risk assessment prior to harvest was developed based on the following factors: orchard rot history, fruit quality, orchard type, fruit mineral composition, fungal inoculum and weather. Using this system, orchards were classified as low/high risk of Nectria fruit rot based mainly on the incidence of orchard canker and rainfall. This risk assessed pre-harvest for 14 orchards agreed closely with the incidence of rot recorded in

 March in stored samples of apples from the orchards.