The Effective Application Time to Spray Bacillus Thuringiensis Subspecies Kurstaki for Managing Bagworm, Metisa Plana Walker on Oil Palm
نویسنده
چکیده
This study was conducted to determine the suitable time to apply the Bacillus thuringiensis sub species kurstaki against the larvae of the Metisa plana oil palm. The aim of this study is to search for the most economical method for using the B. thuringiensis sub species kurstaki. Owing to that matter, the larvae was sprayed at three different times, 0800, 1200, and1600, with 0.68ml of the B. thuringiensis sub species kurstaki product Dipel ES200 ml of water, under fully netted, rain sheltered conditions. Results showed the effectiveness of the B. thuringiensis sub species kurstaki in the control of bagworm, with more than 90% larvae mortality in three days after treatment. However there are no significant different in mortality rate and duration killing time for M. plana larvae on these three application times
منابع مشابه
Efficacy of Insecticide and Bioinsecticide Ground Sprays to Control Metisa plana Walker (Lepidoptera: Psychidae) in Oil Palm Plantations, Malaysia.
The effectiveness of the synthetic insecticides trichlorfon, lambda-cyhalothrin, cypermethrin emulsion concentrated (EC) and cypermethrin emulsion water based (EW) and a bio-insecticide, Bacillus thuringiensis subsp. kurstaki (Btk), was evaluated at 3, 7, 14 and 30 days after treatment (DAT) for the control of Metisa plana larvae in an oil palm (Elaeis guineensis) plantation in Malaysia. Althou...
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