Dr. H. P. PatelHitesh D. Vala2022-05-122022-05-122020https://krishikosh.egranth.ac.in/handle/1/5810184678Thrips 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.EnglishThesis