MANAGEMENT OF THRIPS, Scirtothrips dorsalis Hood IN CHILLI
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Date
2020
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DEPARTMENT OF AGRICULTURAL ENTOMOLOGY B. A. COLLEGE OF AGRICULTURE ANAND AGRICULTURAL UNIVERSITY, ANAND
Abstract
Thrips population first appeared during 5th week of August (35th SMW).
Incidence of the thrips on chilli was observed from August to February. Initially, the
incidence of thrips was low (3.80 thrips/3 twigs), which was increased in its number
and attained first peak level (27.90 thrips/3 twigs) during second week of November
(45th SMW). Second and highest peak level (28.70 thrips/3 twigs) was noticed during
3rd week of February. Thrips population had significantly positive correlation with
maximum temperature and bright sunshine hour. Where, rainfall, evening relative
humidity and wind speed had highly significant negative correlation. The minimum
temperature, morning relative humidity, morning vapour pressure as well as evening
vapour pressure had non-significant negative correlation with thrips population.