Biology of lesser grain borer (Rhyzopertha dominica Fab.), under different temperature and humidity at laboratory condition

Abstract

The present investigations entitled “Studies on biology and eco-friendly management of lesser grain borer (Rhyzopertha dominica Fab.), under laboratory conditions” in Eastern part of Uttar Pradesh” were carried out in the laboratory of the department of Entomology of Narendra Deva University of Agriculture and Technology, Narendra Nagar (Kumarganj), Faizabad. 2015, revealed that the lesser grain borer, Rhyzopertha Dominica Fab. Is the most commonest species, causing considerable damage to wheat grain by affecting the quality and quantity of grain. Life cycle of Rhyzopertha Dominica Fab. Was found to be completed in shorter duration at greater temperature as compared to lower temperature. Biology of Rhyzopertha Dominica Fab. carried out on wheat variety PBW-154 under controlled conditions of at 25 ± 2 0C, 27 ± 2 0C, 30 ± 2 0C and 35 ± 2 0C temperature and 60 ± 5, 70 ± 5, 75 ± 5 and 85 ± 5 percent relative humidity. Average duration for complete of the life cycle egg to adult was 57.33, 48.33, 40.33 and 34.00 days at 25 ± 2 0C, 27 ± 2 0C, 30 ± 2 0C and 35 ± 2 0C temperature and 60 ± 5, 70 ± 5, 75 ± 5 and 85 ± 5 percent relative humidity.