International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 9, Issue:6, June, 2020

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(6): 2401-2405

Estimation of Crop Loss Due to Lepidopteran Pests of Castor (Ricinus communis L.)
T. R. Ranganath1*, B. K. Shivanna2, Lakshmana3, Jayalaxmi Narayana Hegde4, K. C. Shashidara5 and A. Y. Hugar6
1,4Department of Agril. Entomology, College of Agriculture, Navile, UAHS Shivamogga, India
2Agricultural and Horticultural Research Station, Ullal, Mangalore, India
4Department of Agril. Engineering, College of Agriculture, Navile, Shivamogga, India
6Department of Agronomy, College of Agriculture, Navile, Shivamogga, India
*Corresponding author

Field experiments were carried out to evaluate the yield losses caused by lepidopteran pests on castor during kharif-2018-19. Semilooper, tobacco caterpillar, capsule borer were recorded as major pests. The results revealed that the treatment covered with nylon net recorded zero larval population and zero per cent capsule damage followed by the treatment protected up to 120 days (0.88 larvae / plant and 8.80 %), protected up to 90 days (1.48 larvae / plant and 14.33 %), protected up to 60 days (2.21 larvae / plant and 19.77 %) and protected up to 30 days (3.60 larvae / plant and 29.86 %). In the Untreated check recorded highest mean larval population of 5.21 larvae / plant and 30.15 per cent capsule damage was recorded.

Keywords: Castor, yield loss, chlorantraniprole and nylon net

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How to cite this article:

Ranganath. T. R., B. K. Shivanna, Lakshmana, Jayalaxmi Narayana Hegde, K. C. Shashidara and Hugar. A. Y. 2020. Estimation of Crop Loss Due to Lepidopteran Pests of Castor (Ricinus communis L.).Int.J.Curr.Microbiol.App.Sci. 9(6): 2401-2405. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.