Asian Journal of Bio Science

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Effect of Different Nutrients and Cropping - Sequences on the Incidence of Bihar Hairy Caterpillar (Spilosoma obliquea Walk.) in Mustard Crop


Affiliations
1 Department of Entomology, C.S. Azad University of Agriculture & Technology, Kanpur (U.P.), India
     

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An experiment was laid out in the field at Oilseed Research Farm Kalyanpur, Kanpur during rabi 2002-03 to findout the effect of different nutrients and cropping sequences on the incidence of Bihar hairy catepiller (Spilosoma obliqua Walk.). Mustard sown after fallow received to less infestation (1.61 larvae per 10 plants) of S. obliqua and gave maximum yield (i.e. 32.69q/ha). The crop applied with 112.50 kg N/ha. 56.25 kg P/ha. 56.25 kg K/ha + 2 tonne FYM/ha + 40 kg sulphur/ha + 25 kg ZnSO4/ha + 1 kg boron/ha + seed treatment by Azotobacter @ 10 gm/kg of seed have considered effective in checking the larval population (1.66 larvae per 10 plants) of S. obliqua and provided yield (34.03 q/ha). Mustard sown after faollow with 150 kg N/ha. 75 kg P/ha. 75 kg P/ha. 75 kg P/ha. + 2 tonnes FYM/ha + 40 kg. sulphur/ha + 25 ZnSO1/ha + 1 kg boron/ha or 150 kg N/ha. 75 kg P/ha. 75 kg K/ha. + 2 tonne FYM/ha + 10 kg sulphur/ha + 25 kg ZnSO4/ha + 1 kg boron/ha + seed treatment by Azotobacter @ 10 gm/ha of seed or 112.50 kg N/ha. 56.25 kg P/ha 56.25 kg K/ha + 2 tonnes FYM/ha + 40 kg sulphur/ha + 25 kg ZnSO4/ha + 1 kg boron/ha attracted minimum population (1.00 larvae per 10 plants in each plots) of Spilasoma abliqua Walk.

Keywords

NPK, FYM, Sulphur, ZnSO4, Boron, Azotobacter, Spilosoma obliqua Walk., Mustard.
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  • Effect of Different Nutrients and Cropping - Sequences on the Incidence of Bihar Hairy Caterpillar (Spilosoma obliquea Walk.) in Mustard Crop

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Authors

R. S. Singh
Department of Entomology, C.S. Azad University of Agriculture & Technology, Kanpur (U.P.), India
Harendra Kumar
Department of Entomology, C.S. Azad University of Agriculture & Technology, Kanpur (U.P.), India

Abstract


An experiment was laid out in the field at Oilseed Research Farm Kalyanpur, Kanpur during rabi 2002-03 to findout the effect of different nutrients and cropping sequences on the incidence of Bihar hairy catepiller (Spilosoma obliqua Walk.). Mustard sown after fallow received to less infestation (1.61 larvae per 10 plants) of S. obliqua and gave maximum yield (i.e. 32.69q/ha). The crop applied with 112.50 kg N/ha. 56.25 kg P/ha. 56.25 kg K/ha + 2 tonne FYM/ha + 40 kg sulphur/ha + 25 kg ZnSO4/ha + 1 kg boron/ha + seed treatment by Azotobacter @ 10 gm/kg of seed have considered effective in checking the larval population (1.66 larvae per 10 plants) of S. obliqua and provided yield (34.03 q/ha). Mustard sown after faollow with 150 kg N/ha. 75 kg P/ha. 75 kg P/ha. 75 kg P/ha. + 2 tonnes FYM/ha + 40 kg. sulphur/ha + 25 ZnSO1/ha + 1 kg boron/ha or 150 kg N/ha. 75 kg P/ha. 75 kg K/ha. + 2 tonne FYM/ha + 10 kg sulphur/ha + 25 kg ZnSO4/ha + 1 kg boron/ha + seed treatment by Azotobacter @ 10 gm/ha of seed or 112.50 kg N/ha. 56.25 kg P/ha 56.25 kg K/ha + 2 tonnes FYM/ha + 40 kg sulphur/ha + 25 kg ZnSO4/ha + 1 kg boron/ha attracted minimum population (1.00 larvae per 10 plants in each plots) of Spilasoma abliqua Walk.

Keywords


NPK, FYM, Sulphur, ZnSO4, Boron, Azotobacter, Spilosoma obliqua Walk., Mustard.