Efficacy of diflubenzuron and neem seed kernel suspension against the tobacco caterpillar,spodoptera litura,in tobacco nurseries |
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| Authors: | S Sitaramaiah G Ramaprasad B G Joshi |
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| Institution: | 1. Div. of Enternology, Central Tobacco Research Institute, 533 105, Rajahmundry, A.P., India
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| Abstract: | Nursery tests showed that aqueous sprays of a 25% diflubenzuron (DFB) W.P. at 0.007%, 0.009%, 0.011% and 0.013% a.i., a 2% neem seed kernel suspension (NSKS) in water and a combination of 1% NSKS plus 0.0035% DFB protected tobacco seedlings from tobacco caterpillar (Spodoptera litura F.]) damage up to 9 days after spraying. Weekly treatments in a bulk nursery with 0.009% DFB and 2% NSKS commencing 4 weeks after germination and continued for 7 weeks, offered significant protection and significantly reducedS. litura larval population compared with an unprotected nursery. |
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