Vol. 19 No. 2
Population fluctuation of leaf eating insect pests through climatic factors on cabbage
Author(s): N. KUMARI, B. K. PATIDAR, S. K. JAT, R. BIYANI, D. S. MEENA AND P. K. JAT
Abstract: Population fluctuations of cabbage leaf eating insect pests were investigated at College of Agriculture, Kota (Rajasthan) during winter 2020-21. The larval populations of the diamondback moth and tobacco caterpillar first emerged in the last week of November (47th SMW). Green semilooper, on the other hand, was first noticed in the second week of December (50th SMW), They slowly enhanced and reached their peaks respectively in the first week of January (1st SMW), (5.6 larvae plant-1), the last week of December (52nd SMW), (4.1 larvae plant-1), and the third week of January (3rd SMW), (2.6 larvae plant-1). There was a strong negative correlation of all pests with both of highest and lowest temperatures. The DBM and tobacco caterpillar showed non-significant negative correlations with morning and evening relative humidity. The same was non-significant and positive in case of green semilooper.
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