Effect of weather variable on incidence of Earias vittella in okra

Abstract

An experiment was conducted at Indian Institute of Vegetable Research , Varanasi (India) Research field during summer and Kharif of 2008 and 2009 to know the infestation of shoot and fruit borer, Earias vittella (Fab.) on okra c.v. Parbhani Kranti. Maximum and minimum relative humidity during Kharif 2008, sunshine during summer 2008 and 2009 with shoot damage, maximum temperature during the 2008 summer with fruit damage showed significant positive correlation. Maximum and minimum temperature during Kharif 2009, maximumum and minimum relative humidity during summer 2008 and 2009, showed non-significant negative correlation on fruit damage. The significant negative effect of maximum and minimum relative humidity during summer 2008 and 2009, sunshine during Kharif 2008 on shoot damage observed while rainfall during summer 2008 and 2009, maximum temperature during Kharif 2008 and 2009, minimum temperature during summer 2008 and 2009, and sunshine during Kharif 2009 showed non-significant negative correlation with shoot damage.