Field efficacy of insecticides and integrated pest management modules against litchi leaf roller, Dudua aprobola Meyrick

摘要

Litchi (Litchi chinensis Sonn) is attacked by more than 54 insect and mite pests (Singh et al, 2001) and the litchi leaf roller, Dudua aprobola Meyrick is one of the economically important pests. It causes severe damage to litchi foliage in Bihar, Uttar Pradesh and West Bengal (Singh, 1971; Chakraborty and Samanta, 2005). The peak infestation period of the pest was recorded during July to February when new flush is available and its restricted breeding takes place during off-season (March - April) onalternate hosts such as Kath - Jamun (Zizigium jambolona) and Chhota amaltas of litchi orchards (Lall and Mallik, 1976). In order to evaluate the effects of pesticides alone and in combination with other pest management tools against the litchi leaf roller, D. aprobola, a field trial was carried out in randomized block design (RBD) at the research farm of Rajendra Agricultural University, Bihar, Pusa during the years 2010 -11 and 2011-12.