POPULATION DYNAMICS AND DENSITY OF M. PERSICAE AND ITS BENEFICIAL INSECTS ON TOBACCO CROP
Abstract
Population dynamics and density of M. persicae on tobacco crop and its beneficial insects were investigated during 2014-2016 in Tobacco and Tobacco Products Institute, Plovdiv. The emergence and spread of the pest on tobacco crop are similar during the years. The highest pest population is of the first-second decade of July. The density of attacks is different between years. The green color morph is often most common in the begging of the season. The pink color morph dominates in the summer. Beneficial insects include predators of the Miridae, Cecidomyiidae, Syrphidae and parasitoids of the family Aphidiidae. The beneficial insects increase their density along with increasing aphid density.
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