Efficacy Of Various Insecticides Against Major Insect Pests Of Summer Squash (Cucurbita Pepo) In Dhading District, Nepal

Sapana Parajuli (), Bhimsen Shrestha, Puspa Raj Dulal, Bina Sapkota, Samikshya Gautam and Srijana Pandey
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Sapana Parajuli: Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal
Bhimsen Shrestha: Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal
Puspa Raj Dulal: Department of Agronomy (Msc. Ag), Agriculture and Forestry University, Chitwan, Nepal
Bina Sapkota: Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal
Samikshya Gautam: Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal
Srijana Pandey: Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal

Science Heritage Journal (GWS), 2020, vol. 4, issue 1, 35-42

Abstract: Red pumpkin beetle, fruit fly, flea beetle, whitefly, squash bug, melon aphid, etc. are the major insect pests of summer squash resulting in a huge loss in quality and quantity to farmers A field trial was conducted to find out the comparative efficacy of various insecticides against the major insect pests of summer squash from January to June 2020 in Dhading district, Nepal. The experiment was laid in Randomized Complete Block Design (RCBD) with four different insecticides i.e. Imidachloropid 17.8 SL @1.5ml/l, Spinosad 45SC @1ml/L, Azadiractin (Nimbecidine) 500ppm @ 5 ml/L, Jholmol @ 1:5 concentrations, and normal water spray as control as five treatments. The treatments were replicated four times and ‘Anna 303’ variety of summer squash was used under study. The results revealed that, among all the insecticides evaluated at all the four sprays, Imidachloropid recorded the maximum reduction in the population of red pumpkin beetle (RPB) (about 90%), other insects (about 88%) and also showed minimum leaf infestation % (28.5%), and leaf damage % per plant (15.63%) and Spinosad being at par with Imidachloropid followed by Azadirachtin and Jholmol respectively. Imidachloropid and Spinosad also showed comparatively lower fruit infestation by fruit fly i.e. 18.5% and 20.5 % respectively than other insecticides. Both Imidachloropid and Spinosad treated plots were statistically (p

Keywords: Jholmol; Insecticides; Red Pumpkin beetle; Pest (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:zib:zbngws:v:4:y:2020:i:2:p:35-42

DOI: 10.26480/gws.01.2020.35.42

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