Population dynamics of major insect pests of summer mungbean

Abstract

The field experiment was conducted at the Breeder seed production farm, Department of Plant Breeding, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (Madhya Pradesh) during the summer season of 2024. Mungbean variety PDM-139 was sown in a 75 m2 plot, damage of insect pests was recorded and correlated with the weather data. The results revealed that the peak incidence whitefly (12.6 adults/cage) and jassid (6.8 jassids/cage) recorded during 19th and 20th SMW, respectively and peak population of green sting bug (2.6 bugs/plant) and Thrips (11.9 thrips/5 flowers) recorded during 21st and 20th SMW, respectively when crop at reproductive stage. White spotted leaf beetle (2.9 beetles/plan) and ladybird beetle (1.8 beetls/plant) recorded during 21st and 20th, respectively. Correlation analysis was revealed that jassid and thrips population were significantly positive correlated with evening relative humidity, while thrips population were significantly negative correlated with sunshine hours.