Journal of Agricultural Science and Practice

JOURNAL OF AGRICULTURAL SCIENCE AND PRACTICE
Integrity Research Journals

ISSN: 2536-7072
Model: Open Access/Peer Reviewed
DOI: 10.31248/JASP
Start Year: 2016
Email: jasp@integrityresjournals.org

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Organic pest management of major insect pests of Ashwagandha, Withania somnifera Dunal

https://doi.org/10.31248/JASP2016.011   |   Article Number: 19980E491   |   Vol.1 (2) - August 2016

Received Date: 20 May 2016   |   Accepted Date: 14 June 2016  |   Published Date: 30 August 2016

Authors:  RK Murali Baskaran* , K Suresh , B Usha Rani and P Parthiban

Keywords: management, Bio-intensive module, Withania somnifera, Henosepilachna vigintioctopunctata, Coccidohystrix insolitus

ABSTRACT

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An organic based bio-intensive module was developed and evaluated under field condition at the Department of Agricultural Entomology, Agricultural College and Research Institute, Madurai for the management of major insect pests of ashwagandha (Withania somnifera Dunal) during August 2012 to March 2013 with the weather condition of 28 ± 1.40C and 73% relative humidity (RH). A Bio-intensive module consisting of various components like vermicompost 2 t/ha + neem or karanj cake 250 kg/ha + bio-fertilizers (2 kg/ha) + NPK (45:50:50 kg/ha) + Trichogramma chilonis 125000 parasitoids/ha (3 releases on 15, 45, 75 DAP) + neem gold 1.5 ml/lit (3 sprays on 20, 50, 80 DAP) + fish oil rosin soap 25 g/litre (5 sprays on 30, 60, 90, 120, 150 DAP) imposed on ashwagandha field was found to be effective in reducing the incidence of major pests of ashwagandha, recording the mean leaf damage of 4.4 per cent with a reduction over full dose of NPK of 78.0 per cent for Epilachna beetle (Henosepilachna vigintioctopunctata Fab.) and mean population of 2.6 nos./leaf with a reduction over full dose of NPK of 72.9 per cent for mealybugs [Coccidohystrix insolitus (Green)]. Module I has recorded the highest yield of 547.2 kg dried roots/ha, in contrast to full dose of NPK (344.8 kg dried roots/ha) and untreated check (275.6 kg dried roots/ha).

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