Indian Journal of Animal Nutrition

  • Year: 2014
  • Volume: 7
  • Issue: 16

Insecticidal Activity of Azadirachtin against Pulse Beetle (Callosobruchus maculatus Fab.) (Coleoptera: Bruchidae) Infesting Cowpea (Vigna unguiculata L.)

  • Author:
  • Ardhendu Chakraborty1,, J. Alice R. P. Sujeetha2, C. V. Kavitha Abirami3, K. Alagusundaram4
  • Total Page Count: 5
  • DOI:
  • Page Number: 2310 to 2314

1Department of Agricultural Entomology, PGP College of Agricultural Sciences, Tamil Nadu Agricultural University, Namakkal-637 207, Tamil Nadu, India

2Department of Primary Processing, Storage & Handling, Indian Institute of Crop Processing Technology, Ministry of Food Processing Industries, Government of India, Pudukkottai Road, Thanjavur - 613 005, Tamil Nadu, India

3Department of Academics and Human Resource Development, Indian Institute of Crop Processing Technology, Ministry of Food Processing Industries, Government of India, Pudukkottai Road, Thanjavur - 613 005, Tamil Nadu, India

4Director, Indian Institute of Crop Processing Technology, Ministry of Food Processing Industries, Government of India, Pudukkottai Road, Thanjavur -613 005, Tamil Nadu, India

Abstract

The toxicity of Azadirachtin (commercial product Nimbicidine®) was tested on three life stages of Callosobruchus maculatus viz., egg hatchability, larval survival and adult emergence. The concentrations used in the present experiment were 0.5, 1.0, 1.5, 2.0, 2.5 ml/100g of seeds. There was no egg hatching, larval survival and adult emergence in the highest dose level (2.5 ml/100 g seeds). It was also observed that the mean per cent egg hatching inhibition, per cent larval mortality change and per cent adult emergence suppression was highest in the higher dose of treatment 2.5 ml/100 g seeds (100 per cent) followed by other doses. Amongst all treatments tested for ovicidal, larvicidal and adulticidal potencies the treatment containing higher concentration with 2.5 ml/100 g seeds showed the significant effect in all the developmental stages.

Keywords

Impact, Insecticide, Azadirachtin, Neem, Pulse beetle, Cowpea