Effect Of Residual Herbicides Used in the Last Post-directed Application on Weed Control and Cotton Yield in Glyphosate- and Glufosinate-resistant Cotton

Koger, Clifford H.; Price, Andrew J.; Faircloth, Joel C.; Wilcut, John W.; Nichols, S.

doi:10.1614/0890-037x(2007)21[378:eorhui]2.0.co;2

Cited by 9 publications

(7 citation statements)

References 20 publications

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“…Furthermore, 5% injury was observed 7, 14, and 28 d after glufosinate was applied to eight-leaf cotton. These results are consistent with those of Blair-Kerth et al 2001, Everman et al (2007), Gardner et al (2006, and Koger et al (2007) who observed , 2% injury to LL cotton following glufosinate applications at multiple application timings.…”

Section: Resultssupporting

confidence: 91%

Response of LibertyLink and WideStrike Cotton to Varying Rates of Glufosinate

Dodds

Main

Barber³

et al. 2015

Weed technol.

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Field studies were conducted in Alabama, Arkansas, Georgia, Louisiana, Mississippi, North Carolina, and Tennessee during 2010 and 2011 to determine the effect of glufosinate application rate on LibertyLink and WideStrike cotton. Glufosinate was applied in a single application (three-leaf cotton) or sequential application (three-leaf followed by eight-leaf cotton) at 0.6, 1.2, 1.8, and 2.4 kg ai ha−1. Glufosinate application rate did not affect visual injury or growth parameters measured in LibertyLink cotton. No differences in LibertyLink cotton yield were observed because of glufosinate application rate; however, LibertyLink cotton treated with glufosinate yielded slightly more cotton than the nontreated check. Visual estimates of injury to WideStrike cotton increased with each increase in glufosinate application rate. However, the injury was transient, and by 28 d after the eight-leaf application, no differences in injury were observed. WideStrike cotton growth was adversely affected during the growing season following glufosinate application at rates of 1.2 kg ha−1 and greater; however, cotton height and total nodes were unaffected by glufosinate application rate at the end of the season. WideStrike cotton maturity was delayed, and yields were reduced following glufosinate application at rates of 1.2 kg ha−1 and above. Fiber quality of LibertyLink and WideStrike cotton was unaffected by glufosinate application rate. These data indicate that glufosinate may be applied to WideStrike cotton at rates of 0.6 kg ha−1 without inhibiting cotton growth, development, or yield. Given the lack of injury or yield reduction following glufosinate application to LibertyLink cotton, these cultivars possess robust resistance to glufosinate. Growers are urged to be cautious when increasing glufosinate application rates to increase control of glyphosate-resistant Palmer amaranth in WideStrike cotton. However, glufosinate application rates may be increased to maximum labeled rates when making applications to LibertyLink cotton without fear of reducing cotton growth, development, or yield.

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Section: Resultssupporting

confidence: 91%

Response of LibertyLink and WideStrike Cotton to Varying Rates of Glufosinate

Dodds

Main

Barber³

et al. 2015

Weed technol.

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“…The time of weed emergence is one of the most important factors in determining the magnitude of crop yield losses (Myers et al 2004); therefore, herbicide application timing should be planned based on weed emergence and weed size to provide season-long weed control that results in maximum soybean yields (Hilgenfeld et al 2004). Several studies reported that the addition of a residual herbicide with POST herbicide later in the season improves weed control, and reduces weed seed production, as well as providing an additional mode of action that reduces selection pressure for weed resistance (Gonzini et al 1999;Tharp and Kells 2002;Koger et al 2007). Thus, micro-encapsulated acetochlor will be a good additional tool to include in PRE or POST herbicide program in soybean.…”

Section: Canadian Journal Of Plant Sciencementioning

confidence: 99%

Weed control and crop tolerance of micro-encapsulated acetochlor applied sequentially in glyphosate-resistant soybean

2015

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. 2015. Weed control and crop tolerance of micro-encapsulated acetochlor applied sequentially in glyphosate-resistant soybean. Can. J. Plant Sci. 95: 973Á981. Acetochlor, an acetamide herbicide, has been used for many years for weed control in several crops, including soybean. Micro-encapsulated acetochlor has been recently registered for preplant (PP), pre-emergence (PRE), and post-emergence (POST) application in soybean in the United States. Information is not available regarding the sequential application of acetochlor for weed control and soybean tolerance. The objectives of this research were to determine the effect of application timing of micro-encapsulated acetochlor applied in tank-mixture with glyphosate in single or sequential applications for weed control in glyphosateresistant soybean, and to determine its impact on soybean injury and yields. Field experiments were conducted at Clay Center, Nebraska, in 2012, and at Waverly, Nebraska, in 2013. Acetochlor tank-mixed with glyphosate applied alone PP, PRE, or tank-mixed with flumioxazin, fomesafen, or sulfentrazone plus chlorimuron provided 99% control of common waterhemp, green foxtail, and velvetleaf at 15 d after planting (DAP); however, control declined to 540% at 100 DAP. Acetochlor tank-mixed with glyphosate applied PRE followed by early POST (V2 to V3 stage of soybean) or late POST (V4 to V5 stage) resulted in ]90% control of common waterhemp and green foxtail, reduced weed density to 52 plants m (2 and biomass to 512 g m , and resulted in soybean yields 3775 kg ha (1 . The sequential applications of glyphosate plus acetochlor applied PP followed by early POST or late POST resulted in equivalent weed control to the best herbicide combinations included in this study and soybean yield equivalent to the weed free control. Injury to soybean was B10% in each of the treatments evaluated. Micro-encapsulated acetochlor can be a good option for soybean growers for controlling grasses and small-seeded broadleaf weeds if applied in a PRE followed by POST herbicide program in tankmixture with herbicides of other modes of action. , avec pour re´sultat un rendement du soja supe´rieur a`3 775 kg par hectare. Les applications se´quentielles de glyphosate et d'ace´tochlor avant les semis, puis au de´but ou a`la fin de la leve´e assurent une lutte e´quivalente aux meilleures combinaisons d'herbicides examine´es dans le cadre de l'e´tude et de´bouchent sur un rendement en soja e´quivalent a`celui de la parcelle te´moin de´sherbe´e. Les traitements e´value´s causent moins de dix pour cent de dommages au soja. Les microcapsules d'ace´tochlor Abbreviations: AMATA, common waterhemp, Amaranthus rudis Sauer; ABUTH, green foxtail, Setaria viridis (L.) P. Beauv; DAP, days after planting; DBP, days before planting; POST, postemergence application; PP, preplant application; PRE, pre-emergence application; SETVI, velvetleaf, Abutilon theophrasti Medik Can. J. Plant Sci. (2015) 95: 973Á981

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“…It was important to investigate the effects of pre-plant and pre-emergence herbicide mixtures on weeds in cotton. Since cotton plants had a slower and longer life cycle compared to other plants, the risk of phytotoxicity to herbicides is high (Koger et al, 2007). For this reason, the effect of the active ingredients on the weeds as well as the effect on yield should be taken into consideration in the studies of herbicides (Streibig and Jensen 2000).…”

Section: Introductionmentioning

confidence: 99%

Clomazone Aktif Maddesinin Yarı Kurak Koşullarda Geleneksel Pamuk (Gossypium hirsutum L.) Tarlalarında Yabancı Ot Kontrolünde Çıkış Öncesi Herbisitlerle Tank Karışımı

Pala

Mennan

2019

European Journal of Science and Technology

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Öz Başarılı pamuk üretiminin kritik bileşenlerinden biri, etkili yabani ot yönetimidir. Pamuk (Gossypium hirsutum L.), yabani otlarla yeterince rekabet edemediğinden, özellikle ilk altı haftada, bazı yabani ot türleri pamuk verimini önemli ölçüde azaltmaktadır. Ayrıca yabani otlar pamuk hasadını zorlaştırabilir ve lifini kirletebilir. Türkiye geleneksel pamuk üretiminde (toleranslı ve dayanıklı olmayan çeşitler) özellikle geniş yapraklı yabancı ot kontrolü için tercih edilen temel yöntem, ekim öncesi veya çıkış öncesi herbisitlerin kullanılmasıdır. Bununla birlikte, farklı çıkış öncesi herbisitlerin karışımlarının etkileri hakkında fazla bilgi bulunmadığından, bu çalışma, pamukta çıkış önceki bir karışım olarak uygulanan herbisitlerin etkinliğini ve seçiciliğini belirlemek için yürütülmüştür. Arazi denemeleri tesadüf blokları deneme desenine göre dört tekerrürlü olarak 11 farklı uygulama olacak şekilde tasarlanmıştır. Parseller 20 metrekare (4 m x 5 m) olarak kurulmuştur. Bu çalışmada herbisit uygulamaları 2015 yılında Diyarbakır'da gerçekleştirilmiş ve çift clomazone aktif maddesinin fluometuron, oxyfluorfen ve pendimethalin ile farklı dozlardaki karışımları kullanılmıştır. Clomazone 0.2 l ha-1 + fluometuron 1,5 l ha-1, clomazone 0.2 l ha-1 + fluometuron 2 l ha-1, clomazone 0.4 l ha-1 + pendimethalin 1.5 l ha-1 ve clomazone 0.3 l ha-1 + pendimethalin 2 l ha-1 karışımın yabani ot kontrol etkinliğinin tam olduğu tespit edilmiştir. Bu sonuç, clomazone aktif maddesi ile yapılan herbisit karışımlarının çıkış öncesi uygulandığında yabancı ot control etkinliği arttığını göstermektedir. Oxyfluorfen karışımlarında ürün seçiciliği açısından en tehlikeli hasar gözlenmiştir. En yüksek pamuk verimleri (> 5 t ha-1) sırasıyla clomazone 0.30 l ha-1 + fluometuron 2 l ha-1 ve clomazone 0.2 l ha-1 + fluometuron 1.5 l ha-1 karışımlarının uygulanmasından elde edilmiştir.

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Effect Of Residual Herbicides Used in the Last Post-directed Application on Weed Control and Cotton Yield in Glyphosate- and Glufosinate-resistant Cotton

Cited by 9 publications

References 20 publications

Response of LibertyLink and WideStrike Cotton to Varying Rates of Glufosinate

Response of LibertyLink and WideStrike Cotton to Varying Rates of Glufosinate

Weed control and crop tolerance of micro-encapsulated acetochlor applied sequentially in glyphosate-resistant soybean

Clomazone Aktif Maddesinin Yarı Kurak Koşullarda Geleneksel Pamuk (Gossypium hirsutum L.) Tarlalarında Yabancı Ot Kontrolünde Çıkış Öncesi Herbisitlerle Tank Karışımı

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