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Imazethapyr-Resistant Jungle Rice (Echinochloa colona) in Soybean Growing Belt of Central India: A Case Study

Imazethapyr-Resistant Jungle Rice (Echinochloa colona) in Soybean Growing Belt of Central India:... The Jungle rice [Echinochloa colona (L.)Link] is one of the major weed of soybean, which causes significant yield loss. Poor efficacy of imazethapyr for controlling E. colona weed in soybean was reported by farmers. Therefore, a survey was conducted in 21 soybean growing districts of Central India and 94 E. colona biotypes were collected. Net house experiments were conducted in 2017 and 2018 to evaluate resistance of E. colona biotypes against imazethapyr. Imazethapyr was applied at dose of 100, 200 and 400 g ha−1 at 4–5 leaf stage of E. colona. During initial screening E. colona biotypes from 15 districts were found with variable level of resistance. During second generation of screening, highly resistant biotypes from Ashoknagar (APS), Indore (IAS and IFS), Dhar (DBS), Sagar (SaSS1 and SaDS), Hosangabad (HoRS1and HoRS2) was identified with LD50 > 1000 g ha−1. The resistance index indicated that resistant biotypes were 18–11,650 fold more resistant than the susceptible ones. Thus, this is the first report of imazethapyr-resistant jungle rice in soybean from India. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Agricultural Research Springer Journals

Imazethapyr-Resistant Jungle Rice (Echinochloa colona) in Soybean Growing Belt of Central India: A Case Study

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References (46)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to National Academy of Agricultural Sciences 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2249-720X
eISSN
2249-7218
DOI
10.1007/s40003-023-00651-0
Publisher site
See Article on Publisher Site

Abstract

The Jungle rice [Echinochloa colona (L.)Link] is one of the major weed of soybean, which causes significant yield loss. Poor efficacy of imazethapyr for controlling E. colona weed in soybean was reported by farmers. Therefore, a survey was conducted in 21 soybean growing districts of Central India and 94 E. colona biotypes were collected. Net house experiments were conducted in 2017 and 2018 to evaluate resistance of E. colona biotypes against imazethapyr. Imazethapyr was applied at dose of 100, 200 and 400 g ha−1 at 4–5 leaf stage of E. colona. During initial screening E. colona biotypes from 15 districts were found with variable level of resistance. During second generation of screening, highly resistant biotypes from Ashoknagar (APS), Indore (IAS and IFS), Dhar (DBS), Sagar (SaSS1 and SaDS), Hosangabad (HoRS1and HoRS2) was identified with LD50 > 1000 g ha−1. The resistance index indicated that resistant biotypes were 18–11,650 fold more resistant than the susceptible ones. Thus, this is the first report of imazethapyr-resistant jungle rice in soybean from India.

Journal

Agricultural ResearchSpringer Journals

Published: Sep 1, 2023

Keywords: Echinochloa colona; Imazethapyr; Resistance index; Reduction rate; Screening

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