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Alternative control practices for Am...

Weirich, Jason Wade.

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Alternative control practices for Amaranthus palmeri resistant to acetolactate synthase inhibiting herbicides in Oklahoma peanut fields.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Alternative control practices for Amaranthus palmeri resistant to acetolactate synthase inhibiting herbicides in Oklahoma peanut fields./
Author:	Weirich, Jason Wade.
Description:	63 p.
Notes:	Adviser: Case R. Medlin.
Contained By:	Masters Abstracts International46-01.
Subject:	Agriculture, Agronomy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1445923
ISBN:	9780549127000

Alternative control practices for Amaranthus palmeri resistant to acetolactate synthase inhibiting herbicides in Oklahoma peanut fields.
Weirich, Jason Wade.

Alternative control practices for Amaranthus palmeri resistant to acetolactate synthase inhibiting herbicides in Oklahoma peanut fields. - 63 p.

Adviser: Case R. Medlin.

Thesis (M.S.)--Oklahoma State University, 2007.

Scope and method of study. Chapter I: Palmer amaranth populations across western Oklahoma are developing resistance to acetolactate synthase (ALS) inhibiting herbicides. Trials were established to evaluate ALS resistant pigweed control, in no-till and strip-till systems with various levels of herbicides imposed. Chapter II: Amaranthus is the genus of the pigweed family. The word is derived from the Greek word, amarantus, which means "everlasting". Research has shown significant yield reduction from the competition of the Amaranthus sp. This study was conducted to evaluate peanut injury and herbicide efficacy of POST herbicide applications. Chapter III: Palmer amaranth is one of the most troublesome weeds in Oklahoma peanut production today due to its rapid growth rate, high competitiveness, long germination period, and high seed production potential. Trials were established to evaluate tank mixes of residual and contact-type herbicide applications on Palmer amaranth control and peanut yields.

ISBN: 9780549127000Subjects--Topical Terms:

1018679
Agriculture, Agronomy.

Alternative control practices for Amaranthus palmeri resistant to acetolactate synthase inhibiting herbicides in Oklahoma peanut fields.
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035 $a (UMI)AAI1445923
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100 1 $a Weirich, Jason Wade. $3 1272626
245 1 0 $a Alternative control practices for Amaranthus palmeri resistant to acetolactate synthase inhibiting herbicides in Oklahoma peanut fields.
300 $a 63 p.
500 $a Adviser: Case R. Medlin.
500 $a Source: Masters Abstracts International, Volume: 46-01, page: 0211.
502 $a Thesis (M.S.)--Oklahoma State University, 2007.
520 $a Scope and method of study. Chapter I: Palmer amaranth populations across western Oklahoma are developing resistance to acetolactate synthase (ALS) inhibiting herbicides. Trials were established to evaluate ALS resistant pigweed control, in no-till and strip-till systems with various levels of herbicides imposed. Chapter II: Amaranthus is the genus of the pigweed family. The word is derived from the Greek word, amarantus, which means "everlasting". Research has shown significant yield reduction from the competition of the Amaranthus sp. This study was conducted to evaluate peanut injury and herbicide efficacy of POST herbicide applications. Chapter III: Palmer amaranth is one of the most troublesome weeds in Oklahoma peanut production today due to its rapid growth rate, high competitiveness, long germination period, and high seed production potential. Trials were established to evaluate tank mixes of residual and contact-type herbicide applications on Palmer amaranth control and peanut yields.
520 $a Findings and conclusions. Chapter I: Only the herbicide treatment effect was significant for AMAPA (Amaranthus palmeri S. Wats.) control and peanut yield. Pendimethalin EC (1.1 kg ai/ha), controlled AMAPA 52 and 89% compared to pendimethalin PE (1.1 kg ai/ha) which controlled AMAPA 28 and 72% 53 DAT at Beckham and Caddo Counties respectively. Although not significant, flumioxazin and sequential applications of S-metolachlor consistently provided the best control of AMAPA across all three locations. Chapter II: Paraquat (0.56 kg ai/ha) and paraquat (0.84 kg ai/ha) which is 50% over the labeled rate of paraquat tank mixed with S-metolachlor (1.4 kg ai/ha), was not significantly different at 36 DAT. Even when paraquat rates were increased 50% over the label rate, there was no significant peanut injury visible, thus allowing us to control AMAPA better than with lower rates. Chapter III: In 2005, all treatments at Caddo and Beckham Counties controlled AMAPA at least 86% 30 DAT when compared to the untreated check. These data indicate a need for PRE herbicides to be tank mixed with POST herbicides to achieve acceptable weed control.
590 $a School code: 0664.
650 4 $a Agriculture, Agronomy. $3 1018679
650 4 $a Agriculture, Plant Pathology. $3 1028950
690 $a 0285
690 $a 0480
710 2 $a Oklahoma State University. $b Plant & Soil Science. $3 1272627
773 0 $t Masters Abstracts International $g 46-01.
790 $a 0664
790 1 0 $a Damicone, John P. $e committee member
790 1 0 $a Medlin, Case R., $e advisor
790 1 0 $a Murray, Don S. $e committee member
791 $a M.S.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1445923