Seasonal incidence of major pests of cabbage in Nalanda district of Bihar

Abstract

The highest population of Cabbage Butterfly was noticed in last week of February in Rabi season of 2019. Maximum infestation of Diamond back Moth was observed in first week of April. Maximum population of Tobacco leaf eating caterpillar was recorded in third week of February. Infestation of Cabbage Head borer was highest in first week of April. Minimum temperature, Moring relative humidity and Rainfall showed significantly positive correlation with the population of cabbage butterfly, Diamond back moth and Tobacco caterpillar, where as Maximum temperature and Bright sunshine hours showed non-significantly negative correlation with the above three pests of cabbage. Morning relative humidity, rainfall and bright sunshine hours showed significantly positive correlation with the population of cabbage head borer.