Estimation of yield loss in soybean triggered by Spodoptera litura: Estimation of yield loss in soybean triggered by Spodoptera litura

B SUNDAR; NANDA KHANDWE; M SURYA PRAKASH

doi:10.56739/jor.v37iSpecialissue.141032

Authors

B SUNDAR Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwavidyalaya, Gwalior-474 002, Madhya Pradesh
NANDA KHANDWE Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwavidyalaya, Gwalior-474 002, Madhya Pradesh
M SURYA PRAKASH Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwavidyalaya, Gwalior-474 002, Madhya Pradesh

https://doi.org/10.56739/jor.v37iSpecialissue.141032

Keywords:

Genotypes, Infestation, Soybean, Spodoptera litura, Yield, Yield loss

Abstract

Pest infestation has been identified as the major biotic factor limiting soybean yield worldwide. The current
scenario of management mainly focuses on insecticides with a quick knockdown effect, not with host plant resistance techniques. The present work is for comparing both chemical and plant resistance. Fifty soybean genotypes with four replications (2 treated + 2 untreated) screened against Spodoptera litura infestation. Among them eleven varieties were resistant and high yielding (R-HY), seventeen were resistant and low yielding (R-LY) and twenty two varieties were susceptible and low yielding (S-LY). The grain yield range from 475.0 to 2375.0 kg/ha and 450.0 to 2263.0 kg/ha, in treated and untreated varieties, respectively. The grain yield loss ranged from 0.67 to 17.71 per cent in different varieties.

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Estimation of yield loss in soybean triggered by Spodoptera litura