Articles
CAPSID BUG PROBLEMS IN DANISH APPLE ORCHARDS
Article number
422_27
Pages
165 – 169
Language
Abstract
In Danish apple orchards grown according to the "Integrated Production" guidelines pest problems with capsid bugs (Hemiptera: Miridae) have occurred in recent years due to limitations in the use of insecticides.
An insecticide treatment experiment compared effects of reduced dosages of azinphos-methyl (½, 1/5 and 1/10 recomm. dos.) with dimethoate and phosalone.
Effects on predatory bugs, mites and tortricids were measured as well.
It was concluded that there are more beneficial than harmful capsids present in the apple orchards, that dimethoate must be considered as the most efficient compound against the pest species, but that the use should be restricted to the parts of the orchard suffering from capsid attacks.
The treatment should be carried out on petal fall.
An insecticide treatment experiment compared effects of reduced dosages of azinphos-methyl (½, 1/5 and 1/10 recomm. dos.) with dimethoate and phosalone.
Effects on predatory bugs, mites and tortricids were measured as well.
It was concluded that there are more beneficial than harmful capsids present in the apple orchards, that dimethoate must be considered as the most efficient compound against the pest species, but that the use should be restricted to the parts of the orchard suffering from capsid attacks.
The treatment should be carried out on petal fall.
Authors
H. Ravn, A. Nohr Rasmussen
Keywords
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