AbstractBenomyl, prochloraz or procymidone, applied as an overall plant spray at the openflower stage, effectively suppressedBotrytis cinereafruit rot, whereas no control was achieved by foliar application only. Fruit rot was prevented using procymidone applied to the soil 12 days before inoculation of the flowers, whereas benomyl or prochloraz gave little or no control, respectively when applied in the same manner. Bioassays, usingPenicillium expansumon leaf and flower extracts of strawberry plants growing in soil treated with procymidone, showed the presence of an inhibitory compound with the sameRFvalue on thin‐layer chromatography as that of procymidone. Analysis by gas chromatography and identification by gas chromatography—mass spectrometry established that the fungicide procymidone was translocated from the root system of strawberry plants to the leaves and flow
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