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The effect of aldicarb on the control of red spider mite, Tetranychus urticae (Koch), by the predator Phytoseiulus persimilis Athias‐Henriot on year‐round chrysanthemums
Author(s) -
CROSS J. V.
Publication year - 1980
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1980.tb01210.x
Subject(s) - aldicarb , tetranychus urticae , biology , spider mite , acaricide , toxicology , mite , horticulture , acari , acariformes , biological pest control , predator , panonychus ulmi , predation , botany , pesticide , agronomy , ecology
SUMMARY In the summer of 1979 a study was made of the effect of aldicarb application to glasshouse chrysanthetnums on the interaction between Phytoseiulus persimilis and aldicarb‐resistant Tetranychus urticae. Different rates of aldicarb were applied to chrysanthemums three weeks after planting and predators were introduced three weeks later. Whilst exceptionally large numbers of red spider mite were controlled in a mean of 25 days on untreated beds, control took 42 days where aldicarb had been applied at the rate of 11 kg active ingredient per hectare. The delay in control when intermediate rates of aldicarb were used was roughly proportional to the dose of aldicarb.