Effect of Weather Parameters on Seasonal Activities of Plutella xylostella (L.) on Cabbage

The field experiment was conducted at Horticulture Farm, S.K.N. College of Agriculture, Jobner, Rajasthan during two consecutive seasons i.e. Rabi, 2022-23 and Rabi, 2023-24. During investigation diamondback moth was reported as a major insect pest of cabbage crop. The infestation of diamondback moth was initiated from third week of December (51st SMW) and peaked in first week of February (6th SMW) and second week of February (7th SMW) in Rabi, 2022-23 and 2023-24 respectively. The correlation studies revealed that the P. xylostella population showed a significant positive correlation with maximum temperature (r = 0.57) and sunshine hours (r = 0.56) during Rabi, 2022-23. Whereas during 2023-24, it had a significant positive correlation with minimum temperature (r = 0.73)