volume 33 issue 2 (june 2013) : 98-103
SEASONAL INCIDENCE AND ECONOMIC LOSSES OF BRINJAL SHOOT AND FRUIT BORER, LEUCINODES ORBONALIS GUENEE
1Department of Entomology,
C. S. Azad University of Agriculture & Technology, Kanpur-208 002, India
ABSTRACT
Seasonal incidence of shoot and fruit borer, Leucinodes orbonalis Guen. (on shoot) was more prevalent during vegetative phase of the crop up to the 3rd week of September. On initiation of fruiting stage there was a continuous decline in the infestation on shoots and it disappeared during fruiting stage of the crop in end of October, as the borer infestation shifted to the fruits reaching in the 2nd week of October. It gradually declined with the advent of winter season and completely wiped out by the end of November. The role of temperature, rainfall, relative humidity (Morning) in increasing infestation and intensity on shoot and fruits was very conductive but RH (%) (Evening) responded negatively. The economic injury level of shoot and fruit borer on brinjal shoots was recorded as 0.96 & 0.90 per cent during 1st and 2nd year respectively and on brinjal fruits as 0.81 & 0.72 per cent during 1st and 2nd year.
KEYWORDS
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