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Carryover of Imazethapyr and Imazapic to Nontolerant Rice

Published online by Cambridge University Press:  20 January 2017

Enio Marchesan ,
Fernando M. Dos Santos ,
Mara Grohs ,
Luis A. De Avila ,
Sérgio L. O. Machado ,
Scott A. Senseman ,
Paulo F. S. Massoni  and
Gerson M. S. Sartori
Enio Marchesan*
Affiliation:
Departmento de Fitotecnia, Universidade Federal de Santa Maria, Rio Grande do Sul State, Brazil
Fernando M. Dos Santos
Affiliation:
Departmento de Fitotecnia, Universidade Federal de Santa Maria, Rio Grande do Sul State, Brazil
Mara Grohs
Affiliation:
Departmento de Fitotecnia, Universidade Federal de Santa Maria, Rio Grande do Sul State, Brazil
Luis A. De Avila
Affiliation:
Departmento de Fitotecnia, Universidade Federal de Santa Maria, Rio Grande do Sul State, Brazil
Sérgio L. O. Machado
Affiliation:
Departmento de Fitotecnia, Universidade Federal de Santa Maria, Rio Grande do Sul State, Brazil
Scott A. Senseman
Affiliation:
Departmento de Fitotecnia, Universidade Federal de Santa Maria, Rio Grande do Sul State, Brazil
Paulo F. S. Massoni
Affiliation:
Departmento de Fitotecnia, Universidade Federal de Santa Maria, Rio Grande do Sul State, Brazil
Gerson M. S. Sartori
Affiliation:
Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77840
*
Corresponding author's E-mail: emarchezan@terra.com.br.
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Abstract

The present work aimed to evaluate plant injury caused by residues in the soil of the formulated mixture of imazethapyr and imazapic to a nontolerant genotype of rice (IRGA 417) drilled at 371 and 705 d after herbicide application (DAA). Herbicide carryover reduced up to 55% of the grain yield of the IRGA 417 drilled at 371 DAA, and plant injury was still evident at 705 DAA but without grain yield reduction.

El objetivo del presente trabajo fue evaluar los daños causados por residuos en el suelo, de una mezcla de imazethapyr e imazapic a plantas de un genotipo de arroz (IRGA 417) no tolerante, tomada la muestra entre los 371 y los 705 días después de la aplicación del herbicida (DAA). El efecto residual del herbicida redujo en hasta 55% el rendimiento del grano de las plantas de IRGA 417 muestreadas a los 371 DAA. Los daños a la planta fueron aún evidentes a los 705 DAA pero sin reducción en el rendimiento del grano.

Keywords

Imazethapyrimazapicrice, Oryza sativa L. ‘IRGA 417’Herbicide soil persistenceimidazolinonesplant injury
Type
Weed Management—Major Crops
Information
Weed Technology , Volume 24 , Issue 1 , March 2010 , pp. 6 - 10
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Current address: Department of Fitotecnia, Universidade Federal de Santa Maria, Roraima Avenue, 1000, CEP 97105-900, Rio Grande do Sul State, Brazil.

References

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