POPULATION DYNAMICS, VARIETAL SCREENING AND MANAGEMENT OF SUCKING PEST COMPLEX OF GREEN GRAM [Vigna radiata (L.) Wilczek] 3455
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Date
2021-12
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JAU JUNAGADH
Abstract
Experiments were carried out on “Population dynamics, varietal screening
and management of sucking pest complex of green gram [Vigna radiata (L.)
Wilczek]” at Instuctional Farm, College of Agriculture, JAU, Junagadh during
summer 2021.
Population dynamics of thrips revealed that the population of thrips (0.23
thrips /3 leaves) was appeared from the 1
st WAS i.e. 1st week of March and increased
gradually and reached at peak level of 8.07 thrips /3 leaves during the 6th WAS
coinciding with second week of April. The correlation matrix of thrips population
with weather parameters has exhibited the significant positive correlation with
maximum temperature (r = 0.675*) and wind speed (r = 0.734*).
The jassid population was commenced from the 1st WAS i.e. the first week of
March with 0.17 jassid /3 leaves. The population of the pest was increased fast from
the 3rd to 5th WAS and reached at p