Insect pest diversity in Cauliflower, Brassica oleracea var. botrytis Linn.and its relation to Abiotic factors
2014
Singh, Rudra Pratap | Pal Sundar
The maximum population of Spodoptera litura was recorded 3.75 larvae/10 plants in 51st during second year at a temperature range of 5.0 -23.6oC and Relative humidity 68.8% were recorded. The maximum larvae of Plutella xylostella were noted in 50th SW during both the years at temperature range of 11.0-25.9oC and RH 64.4% in 2009-2010 and 7.3-24.0oC and RH 68.9% in 2010-2011. Pieris brassicae reached to its maximum in 5th SW at temperature range of 7.1-24.9oC and RH 64.7% during 2009-2010 and 6.0-23.7oC and 70.5% RH with a population range of 0.33-2.58/10 plants during 2010- 2011. Maximum population of Thysanoplusia orichalcea was recorded at which maximum temperature was 25.4oC and RH was 72.9%. All insect pests had negative correlation with minimum and maximum temperatures during both the years.
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