SEASONAL INCIDENCE AND MANAGEMENT OF POD FLY, Melanagromyza obtusa (Malloch) INFESTING PIGEON PEA
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Date
2021
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DEPARTMENT OF AGRICULTURAL ENTOMOLOGY B. A. COLLEGE OF AGRICULTURE ANAND AGRICULTURAL UNIVERSITY ANAND
Abstract
Incidence of various insect-pests on pigeon pea crop were recorded from
October to March. The incidence of leaf hopper started during 3rd week of October (41st
SMW) with lowest (0.95 leaf hopper per 3 leaves) population and attained peak level
(5.45 leaf hopper per 3 leaves) during last week of November (48th SMW). Correlation
of leaf hopper with the minimum temperature (r = 0.549**) had significantly positive
correlation, while evaporation (r = -0.575**) had significantly negative correlation with
the leaf hopper population. The incidence of thrips commenced from 1st week of
November, 2020 and persisted till last week of December, 2020. Initially, its population
was low (6.40 thrips per 10 flowers), which was gradually increased in its numbers and
attained peak level (13.50 thrips per 10 flowers) during second week of December (49th
SMW). Correlation of thrips with minimum temperature (r = 0.526*) had significantly
positive correlation and negative with the morning relative humidity (r = -0.467*).