Suitability of semiochemical and chemical methods for the management of banana pseudo stem weevil, Odoiporus longicollis Oliver (Coleoptera : Curculionidae)

The different approaches for the management of Banana pseudo stem weevil (BSW) Odioporus longicolis viz., foliar application of monocrotophos 36WSC 2ml/lt (T1), injection of monocrotophos 36 WSC @ 4 ml (54 ml of monocrotophos 36WSC with 350 ml of water) at two heights viz., 45 and 150 cm in the pseudostem at monthly interval from 5^th to 8^th month (T2), injecting Azadirachtin 10,000 ppm (1:4 ratio) @ 2 ml/plant at heights viz., 45 cm & 150 cm in the pseudo stem at monthly interval from 5^th to 8^th month (T3) and placing of pseudo stems (25 cm) swabbed with B. bassiana 25 gm in the ground soil @ 100nos/ha (T4) were tested in the farmer field to find out the location specific suitable technology. The treatments were given to five month old plants and repeated during eight month. The performance of different treatments was in the order of T2>T4>T3>T1. As an eco-friendly approach with less input cost the B. bassiana imbedded pseudo stem traps will be ideal for the farmers to manage the pseudo stem weevil menace in banana.