Seasonal incidence of ginger shoot borer, Conogethes punctiferalis (Guenee) and its correlation with abiotic factors

Abstract

A field experiment was carried out at the Department of Entomology, Nagaland University, Medziphema campus during 2018 and 2019 to study the seasonal incidence of ginger shoot borer, Conogethes punctiferalis (Guenee) and its correlation with abiotic factors. The results revealed that the incidence of C. punctiferalis was observed from 120 DAP (Days after planting) in D1 (15th February planting) which falls in the second week of June and for D2 (17th March planting) the incidence of C. punctiferalis was observed from the second week of July and for D3 (16th April planting) the incidence of C. punctiferalis was observed from the second week of August respectively for both the years. In both the experimental year, the highest incidence of C. punctiferalis was observed at 210 DAP in D3
which falls in the second week of November whereas the lowest incidence was recorded at 120 DAP in D1 which falls in the second week of June respectively. Among the weather parameters, maximum temperature and rainfall showed negative correlation whereas maximum relative humidity (RH) showed positive correlation on the incidence of C. punctiferalis for both the years respectively.