Seasonal incidence of diamondback moth (Plutella xylostella L.) on cabbage (Brassica oleracea var. capitata L.) under Allahabad condition

Abstract

Studies on seasonal incidence of diamondback moth Plutella xylostella. Infesting cabbage (Brassica oleracea var. capitata L.) work were carried out at the college of Shiats, Allahabad during 2015-2016. The P. xylostella damage was active throughout the year with a varying degree of infestation. It was recorded from a minimum of 0.32 per cent (second fortnight of Febuary) to maximum of 5.98 per cent (third fortnight of March). A study on the correlation studies indicated a significant positive correlation between larval population of diamondback moth and. the relative humidity (R.H), total rainfall and sunshine hours (SSH) had negative correlation with the larval population of diamondback moth.