CHEMICAL CONTROL OF STRAWBERRY FRUIT ROTS IN THE FIELD AND DETERMINATION OF PROCYMIDONE AND VINCLOZOLIN RESIDUES

FADI, FAHMY A.; DOGHEIM, SALWA M.; BARAKA, METWALY A.; TADROUS, ADEL Z.

doi:10.21608/ejar.1994.454480

CHEMICAL CONTROL OF STRAWBERRY FRUIT ROTS IN THE FIELD AND DETERMINATION OF PROCYMIDONE AND VINCLOZOLIN RESIDUES

Document Type : Original Article

Authors

¹ Plant Pathology Research Institute, Agricultural Research Centre, Giza, Egypt.

² Central Agricultural Pesticides Laboratory, Agricultural Research Centre, Dokki, Giza, Egypt.

³ Faculty of Agriculture, Suez Canal University, Ismailia, Egypt

10.21608/ejar.1994.454480

Abstract

Wounded strawberry fruits showed higher infection with rots than unwounded fruits. Botrytis cinerea, Rhizopus nigricans, Rhizoctonia solani, Phytophthora cactorum and Penicillium sp. were the most virulent fungi causing severe rots, while Mucorsp., Alternaria sp. and Sclerorinia sclerotiorum caused moderate injuries. Aspergillus sp. and Fusarium sp. were the least virulent. Fungicides spraying of strawberry plants, grown under natural in-fection in the field, showed that Rovral (iprodione), Sumisclex (procymidone) and Ronilan (vinclozolin) were the most effective fungi‌cides for controlling fruit rots followed by Daconil 2787 and Euparen. Significant increase in yield was obtained with all fungicidal treatments compared with the control. The amounts of procymidone residues in treated strawberry fruits were decreased from 1.52 to 0.96 and 0.08 ug/ml after 1 and 12 days from application, respectively. Vinclozolin deposits of 1.107 ug/ml were decreased to reach 0.066 , 9 days after treatment. No residues were detected , 15 days after application of procymidone and 12 days for vinclozolin. Harvest can be done after 3 days as a prehevest interval with no health hezard.