Vol. 11, Issue 9 (2022)

Author(s):
Shinde VM, Dhormare AP, Somwanshi VL and Shetgar SS

Abstract:
The laboratory experiments were conducted to study the biology of H. armigera (Hubner) on different host plants viz., soybean, sunflower, sorghum and maize at the Department of Agricultural Entomology, College of Agriculture, Latur during 2015-2016. The results obtained during the course of investigations shows the shortest larval duration (18.87 days) and highest growth index (3.65) was observed in the case of those larvae of H. armigera which were reared on maize followed by sorghum (19.52 days and 3.29), sunflower (20.54 days and 2.80) and soybean (22.20 days and 2.09). Significantly the highest adult emergence of H. armigera to the tune of 74.80% was observed in the case of those larvae which were reared on maize followed by sorghum (71.60%), sunflower (69.80%) and soybean (65.60%). The significantly lowest developmental period of H. armigera to the extent of 35.91 days was recorded on maize. The female H. armigera laid significantly highest eggs (757.20) when its immature stage fed on maize followed by sorghum (728.60), sunflower (633.60), while its egg laying was significantly lowest (453.19) on soybean.