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VCRB :: Contents of Volume 51/1999 :: Detailed information


BIOLOGICAL EFFICACY OF TANK MIXTURES OF ACARICIDES AND FUNGICIDES APPLIED FOR CONTROLLING SPIDER MITES (TETRANYCHUS SPP.) ON GREENHOUSE CROPS OF CUCUMBER AND TOMATO

Jerzy SZWEJDA
Research Institute of Vegetable Crops Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland


Summary

Greenhouse experiments carried out in the Research Institute of Vegetable Crops at Skierniewice over the years 1996-1998 were aimed at ascertaining, wether acaricides maintain their individual efficacy in controlling Tetranychus urticae on cucumber and T. cinnabarinus on tomato, when applied as tank mixtures with fungicides. It was proved that combined application of both pesticides has not resulted in any essential mortality drop of the above cited spider mite species in comparison to the separate use of the acaricides. Following acaricides: hexythiazox, fenpropathrin + hexythiazox, fenbutatin oxide, tebufen-pyrad, pyridaben were applied in some mixtures with the fungicides chloro-thalonil, tiophanate methyl, pirymetanil, azoxystrobin and dichlofluanid. The sole case of a significant decrease in mortality of motile stages of T. urticae on cucumber was stated with the tank mixture of the acaricide pyridaben along with the fungicide dichlofluanid. No symptoms of phytotoxic action of the tested tank mixtures have been stated.

keywords:Tetranychus urticae, Tetranychus cinnabarinus, control, tank mix-tures, tomato, cucumber, greenhouse

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