M. S. RAHMAN1*, M. M. JAHAN2, K. S. ISLAM3 and S. AHMMED4
1Scientific Officer, Pest Management Division, Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207, 2&3Professor, Department of Entomology, Bangladesh Agricultural University, Mymensingh and 4Scientific Officer, Pest Management Division, Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207, Bangladesh.
*Corresponding author’s Email: sohanbau2010@gmail.com
ABSTRACT
The study was conducted at the Entomology IPM Laboratory, Department of Enotomology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh, Bangladesh during February 2014 to March 2015 to generate necessary information for the management of mango hopper. Four insecticides (one microbial and three botanicals) namely Beauveria bassiana, neem oil, mahogany oil and karanja oil were tested against the mango hopper (Idioscopus clypealis (leth). Comparative efficacy of insecticide in the laboratory showed that all the three doses of Beauveria bassiana (1%, 2% and 3%) effectively controlled mango hopper. Among the botanicals 3% neem oil was the most effective best but relatively lower performance was observed in case of 1% mahogany oil. Observation on the effect of a microbial pesticide (Beauveria bassiana) and some botanicals on the infestation of mango hopper at different stages showed that hopper population at pea shaped after prior to second spray was maximum in 1% mahogany oil (13.87) and minimum no. of hopper was found in 3% Beauveria bassiana (7.33).
Keywords: Microbial, Mango hopper, Botanicals and Management.