Abstract
Field experiments were carried out from August, 2011 to December, 2011 to study the field efficacy of bio-pesticides against Spodoptera litura on Gloriosa superba. Results of the field experiments revealed that among the treatments, flavonoids recorded superiority in the management of S. litura starting from 3rd day after treatment and it was statistically on par with the standard chemical check, quinalphos. Pungam oil 3% was next in the order of efficacy, followed by neem oil 3% and NSKE 5%. Efficacy of Bacillus thuringiensis (Bt) at 2 ml/lit was realized only at seven days after treatment and persisted even after 14 days of second spray. Fourteen days after treatment, Bt was next in the order of efficacy after chemical pesticides and flavonoids. From the findings of the field trials, flavonoids showed the best in control of S. litura compared with the tested agents. We recommend flavonoid to be the alternative to chemical pesticides in gloriosa eco-system and to be used as one of the components in organic pest management.
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