Asian Journal of Bio Science

T. Sakthivel ¹, J. Alice ¹, R. P. Sujeetha ¹, L. Nadarajan ¹

Affiliations
1 Dept. of Entomology, Pt. J.N. College of Agriculture & Research Institute, Karaikal (Puducherry), IN

Abstract

The field experiments conducted during 2005-06 at PAJANCOA & RI, Karaikal with Arka anamika okra variety to study the efficacy of botanicals on the sucking pests with ten treatments in three replications. In the first crop the population of aphid was less in NSKE 5 per cent (2.59), neem oil 3 per cent (3.33) and notchi leaf 5 per cent (4.53). Jassid and whitefly population was less in neem oil 3 per cent ( 0.25 and 0.38). Similar trend was also noticed in the second crop. The maximum yield was recorded in NSKE 5 percent (9892.12, 9325.72 kg ha^-1) as against in control (5800.00 and 5916. 67 kg ha^-1) in the first and second crop, respectively. Among the botanicals the NSKE registered highest B:C ratio of 2.28 and 2.15 in the first and second crop, respectively.

Keywords

Botanicals, Okra, B:C Ratio.

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J. Alice ¹, R. P. Sujeetha ¹, N. Muthurani ¹, L. Nadarajan ¹

Affiliations
1 Dept. of Entomology, Pt. J.N. College of Agriculture & Research Institute, Karaikal (Puducherry), IN

Abstract

Blackgram is considered to be an ancient crop and cultivated in India since time immemorial. Pulses belong to the sub family Fabaceae. Pulses suffer a great deal of damage during storage due to attack by the pulse beetle Callosobruchus chinenis (Linn.) (Bruchidae;Coleoptera).They are known to cause quantitative and qualitative losses to the stored pulses in India. Even though, infestation begins in the field, serious damage is caused during storage. The grain damage is as high as 69.39 per cent under storage conditions (Singh et al., 2001).

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