Impact of genotypic mixture on soybean (Glycine max) pest population

LOKESH KUMAR  MEENA; VANGALA  RAJESH; RAM MANOHAR  PATEL; AMAR NATH  SHARMA

doi:10.56093/ijas.v94i8.130412

Authors

LOKESH KUMAR MEENA ICAR-Indian Institute of Soybean Research, Indore, Madhya Pradesh 452 00, India
VANGALA RAJESH ICAR-Indian Institute of Soybean Research, Indore, Madhya Pradesh 452 00, India
RAM MANOHAR PATEL ICAR-Indian Institute of Soybean Research, Indore, Madhya Pradesh 452 00, India
AMAR NATH SHARMA ICAR-Indian Institute of Soybean Research, Indore, Madhya Pradesh 452 00, India

https://doi.org/10.56093/ijas.v94i8.130412

Keywords:

le variety, Soybean insect-pests, Varietal mixture

Abstract

An experiment was conducted during rainy (kharif) seasons of 2018 and 2019 at the ICAR-Indian Institute of Soybean Research, Indore, and Madhya Pradesh to study the impact of genotypic mixture on soybean [Glycine max (L.) Merr.] pest population. A total of 16 soybean genotypes and 4 genotypic mixtures were evaluated for relative efficacy in management of insect-pests of soybean. Among the 20 treatments, the plots with genotypic mixtures had lowest population of Spodoptera exigua Hubner and at par with each other. In case of Spodoptera litura Fabricius, tussock moth, blue beetle and grey weevil management, a mixture of the genotypes JS-9560, JS-20-34, MAUS-47 and MACS-1460 was found most effective treatment. The plots with the genotypic mixtures of NRC-37, JS-9752, RSC-1046 and RKS-113 supported the least population of semiloopers. However, lowest population of leaf miner and girdle beetle was recorded in plots of JS-20-34 while the least population of stem fly was recorded in RSC-1046. The differences observed due to the genotypic combinations may be used for developing inset-pest management programmes in soybean.

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