Plant Derivatives and Organics in the Management of Chilli Pests
KrishiKosh
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Title |
Plant Derivatives and Organics in the Management of Chilli Pests
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Creator |
Jagadeesha H.G.
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Contributor |
R.S. Giraddi
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Subject |
Agricultural Entomology
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Description |
An investigation was carried out to study the effect of plant derivatives and fermented plant products against chilli pests viz., chilli thrips, Scirtothrips dorsalis Hood, yellow mite, Polyphagotarsonemus latus Banks and fruit borer, Helicoverpa armigera Hub. during Kharif, 2007 at College of Agriculture, University of Agricultural Sciences, Dharwad. Among the plant derivatives evaluated in-vitro against yellow mite, NSKE (5%) proved highly effective (73.10% mortality @ 96 h after treatment) followed by Vitex negundo L. biodynamic spray (68.10%). However, they were inferior to standard check, dicofol. Soil application of neemcake @ 250 kg/ha and vermicompost @ 2.5 t/ha with reduced RDF (50%) followed by four sprays of NSKE (5%) was found to be the best treatment in reducing chilli thrips, yellow mite, and fruit borer infesting chilli. It also recorded least leaf curl due to thrips and mite infestation and highest dry chilli yield (3.14 q/ha) and net returns (Rs. 7110/ha). Among fermented plant products evaluated in-vitro against yellow mite, Agniasthra (3%) was the best treatment (69.03% mortality at 96 h after treatment) which was next best to standard check dicofol and NSKE (5%). Among the fermented plant products, Agniasthra (3%) combined with soil application of neemcake @ 250 kg/ha and vermicompost @ 2.5 t/ha, Panchagavya 5% foliar spray with reduced RDF (50%) was found to be the best treatment in reducing thrips, yellow mite and fruit borer and thrips and mite induced leaf curling. All the plant derivatives and fermented plant products combined with soil application of neemcake and vermicompost with reduced RDF (50%) were found to be quite safe to natural enemies viz., Amblyseius sp. and coccinellids in chilli ecosystem as evidenced by the normal activity of the predators comparable to untreated control. |
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Date |
2016-11-10T15:38:18Z
2016-11-10T15:38:18Z 2010 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/84930
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Format |
application/pdf
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Publisher |
UAS, Dharwad
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