Incidence of mango hoppers Idioscopus nitidulus Walker in high-density mango plantation under south Gujarat conditions

Abstract

Studies on population dynamics of mango hoppers and their correlation and regression with abiotic factors in the high-density plantation of Kesar mango orchard under drip irrigation were conducted during 2017 to 2019 at mango orchard of Soil & Water Management Research Unit, Navsari Agricultural University, Navsari, Gujarat. Maximum (9.20, 6.00 and 10.20 hoppers/twig) population of the hopper was recorded at 4th, 13th and 19th SMW in 2017, 2018 and 2019 respectively. Correlation analysis with various weather parameters indicated that sunshine showed a significant positive correlation with hoppers whereas minimum temperature, evening relative humidity and evaporation rate had a significant negative correlation with the incidence of hoppers. Among those abiotic factors, evening relative humidity and evaporation rate were founded the highest impactable factors so far by simple and stepwise regression analysis.