Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of Echinochloa colona to Imidazolinone
-
Published:2021-02-25
Issue:3
Volume:11
Page:187
-
ISSN:2077-0472
-
Container-title:Agriculture
-
language:en
-
Short-container-title:Agriculture
Author:
Benedetti Lariza,
Viana Vívian EbelingORCID,
Carvalho-Moore PâmelaORCID,
Gehrke Vinicios RafaelORCID,
Souza Gustavo Maia,
Camargo Edinalvo RabaioliORCID,
de Avila Luis AntonioORCID,
Roma-Burgos NildaORCID
Abstract
Weeds represent an increasing challenge for crop systems since they have evolved adaptability to adverse environmental conditions, such as salinity stress. Herbicide effectiveness can be altered by the quality of water in which the weed is growing. This research aimed to study the combined effect of salt stress and recurrent selection with a sublethal dose of imidazolinone herbicides in the shifting of the sensitivity of Echinochloa colona (L.) Link (junglerice) to imidazolinone herbicides. This study was divided into two experiments; in experiment I, three recurrent selection cycles were conducted in Pelotas/RS/Brazil with imazapic + imazapyr at 0.125× the field rate; and in experiment II, three recurrent selection cycles were conducted in Fayetteville/AR/USA with imazethapyr, at 0.125× the recommended dose. Salt stress was implemented by irrigation with 120 mM sodium chloride (NaCl) solution. The effective dose for 50% control of the population (ED50) values increased from the field population to the second generation (G2) after recurrent selection with a sublethal dose of imidazolinone combined with salt stress, supporting the hypothesis of reduced susceptibility by the combination of these abiotic factors. Recurrent exposure to a sublethal dose of imazapic + imazapyr or imazethapyr, combined with salt stress, reduced susceptibility of Echinochloa colona (L.) plants to imidazolinone herbicides.
Funder
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
BASF
Conselho Nacional de Desenvolvimento Científico e Tecnológico
University of Arkansas
Ciência sem Fronteiras
Subject
Plant Science,Agronomy and Crop Science,Food Science
Reference59 articles.
1. World Population Projected to Reach 9.8 Billion in 2050, and 11.2 Billion in 2100https://www.un.org/development/desa/en/news/population/world-population-prospects-2017.html
2. The Fight for Food Factors Limiting Agricultural Production;Croxall,2019
3. Weedy (Red) Rice. An Emerging Constraint to Global Rice Production;Ziska,2015
4. Sustainable Weed Control in Rice;Jabran,2018
5. Biology, impact, and management of Echinochloa colona (L.) Link
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献