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Cotton (Gossypium hirsutum) Tolerance to Propazine Applied Pre- and Postemergence

Published online by Cambridge University Press:  20 January 2017

J. W. Keeling ,
K. S. Verett ,
J. D. Reed  and
P. A. Dotray
J. W. Keeling*
Affiliation:
Texas AgriLife Research, Lubbock, TX 79403
K. S. Verett
Affiliation:
Texas AgriLife Research, Lubbock, TX 79403
J. D. Reed
Affiliation:
Texas AgriLife Research, Lubbock, TX 79403
P. A. Dotray
Affiliation:
Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409
*
Corresponding author's E-mail: w-keeling@tamu.edu.
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Abstract

Field studies were conducted in 2007 and 2008 near Lubbock and Lamesa, TX, to determine the effects of propazine alone and in combination with glyphosate applied PRE and POST on cotton growth, yield, and lint value (fiber quality). Propazine at 0.56, 0.84, and 1.12 kg ai ha−1 and in combination with glyphosate at 0.86 kg ae ha−1 was applied PRE, early POST, and mid-POST. Up to 11% injury was observed after propazine applied early POST and mid-POST at Lubbock in 1 of 2 yr, and up to 13% at all three application timings was observed at Lamesa in 1 of 2 yr. The greatest injury was observed 58 d after application following propazine at 1.12 kg ai ha−1 applied PRE; however, no injury was apparent 80 d after application. Cotton yield, lint values, and gross revenues were not affected by any treatment.

Se llevaron a cabo estudios de campo en 2007 y 2008 cerca de Lubbock y Lamesa, TX, para determinar los efectos de propazina solo y en combinación con glifosato, aplicado en preemergencia y postemergencia en el crecimiento del algodón, su rendimiento y la calidad de la fibra. Propazina a 0.56, 0.84, y 1.12 kg ia ha−1 y en combinación con glifosato a 0.86 kg ea ha−1 se aplicó en preemergencia, postemergencia temprana y postemergencia media. Hasta 11% de daño se observó después de la aplicación de propazina en las etapas de postemergencia temprana y media en Lubbock en uno de los dos años, y hasta 13% en los tres tiempos de aplicación en Lamesa en uno de los dos años. El mayor daño se observó 58 días después de la aplicación preemergente de propazina a 1.12 kg ia ha−1; sin embargo, a los 80 días de la aplicación ningún daño fue aparente. Ningún tratamiento afectó el rendimiento del algodón, ni la calidad de la fibra, ni los ingresos brutos obtenidos del cultivo.

Keywords

Glyphosatepropazinecotton, Gossypium hirsutum ‘FiberMax 9058 F’, ‘Americot 1532 B2RF’Cottoncotton toleranceglyphosateMilo-Propropazine
Type
Weed Management—Major Crops
Information
Weed Technology , Volume 25 , Issue 2 , June 2011 , pp. 178 - 182
Copyright
Copyright © Weed Science Society of America 

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