Vol. 10 No. 2
Seasonal incidence of Epilachna beetle (Henosepilachna septima Dieke) in relation to weather parameters on pointed gourd (Tricosanthes dioica Roxb.)
Author(s): Tushar M. Ghule, L. Laishana Devi and S. Jha
Abstract: The experiment was carried out at the \'Incheck farm\', \'C\' Block, BCKV, Kalyani, Nadia, West Bengal during two consecutive years i.e. 2010-11 and 2011-12 from the month of November to June to study the incidence pattern of Henosepilachna septima (Dieke) in relation to weather parameters on pointed gourd. The insect occurred persistently throughout entire crop seasons of all the two years of study. During 2010-11, peak grub and adults was recorded during the first and last week of April, 2011 respectively with highest leaf damage of 24% encountered during first week of April, 2011. During 2011-12, peak grub and adults recorded during last week of March, 2012 and third week of April, 2012 respectively with 27% leaf damage during third week of April, 2012. Abiotic factors found to be responsible for certain changes on incidence such as, temperature (both maximum and minimum) and relative humidity which had significant association with incidence of epilachna beetle on pointed gourd......
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