Vol. 12, Issue 11 (2023)

Author(s):
Devesh Parmar, HR Chaudhary, HP Meghwal, BK Patidar, Laxman Singh Saini and MS Meena

Abstract:
The present investigation on “Seasonal Incidence of Lepidopteran Defoliators of Soybean [Glycine max (L.) Merrill]” was conducted during kharif, 2019 at ARS, Ummedganj, Agriculture University, Kota. The results revealed that the occurrence of red hairy caterpillar was started in the last week of July, while tobacco caterpillar, green semilooper, gram pod borer and bihar hairy caterpillar appeared on the crop slightly late i.e. first week of August. The peak larvae of red hairy caterpillar (2.0/mrl), bihar hariy caterpillar (2.4/mrl) and green semilooper (3.2/mrl) larvae were found in the first week of September. Whereas, the peak of gram pod borer (1.4/mrl) was recorded in second week of September. The correlation study reveals that the red hairy caterpillar population was positively significant correlated with temperature. Whereas, the infestation of tobacco caterpillar and bihar hairy caterpillar was significantly negative correlated with rainfall.