Weed Management with Fomesafen Preemergence in Glyphosate-Resistant Cotton

2004 ◽  
Vol 18 (3) ◽  
pp. 680-686 ◽  
Author(s):  
Daniel O. Stephenson ◽  
Michael G. Patterson ◽  
Wilson H. Faircloth ◽  
James N. Lunsford
Keyword(s):  
Weed Management ◽  
Growing Season ◽  
Field Studies ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Yield Increase ◽  
Seed Cotton Yield ◽  
Pre Treatment ◽  
Over The Top

Field studies were conducted in Alabama in 1998 and 1999 to evaluate fomesafen preemergence (PRE) in glyphosate-resistant cotton. Fomesafen (0.3 and 0.4 kg ai/ha), fluometuron (1.4 kg ai/ha), and pyrithiobac (0.05 kg ai/ha) were applied alone or in tank mixtures. Glyphosate (0.4 kg ae/ha) was applied postemergence over-the-top (POT) and postemergence directed (PD). Regardless of PRE treatment, POT followed by (fb) PD applications of glyphosate were necessary for greater than 82% sicklepod control at midseason. In the absence of glyphosate, fomesafen, and fomesafen-containing tank mixtures controlled common cocklebur andIpomoeaspecies 77 and 72%, respectively, 14 d after PD application. However, two applications of glyphosate were needed for >94% season-long control of common cocklebur andIpomoeaspecies because of continued germination throughout the growing season. Postemergence applications of glyphosate added a 1,000 kg/ha seed cotton yield increase to all PRE treatments at both locations. Common cocklebur,Ipomoeaspecies, and sicklepod control was not significantly increased by the addition of fomesafen PRE tank mixtures fb glyphosate postemergence as compared with glyphosate postemergence only.

Evaluation of Spring and Fall Burndown Application Timings on Control of Glyphosate-Resistant Horseweed (Conyza canadensis) in No-Till Cotton

2009 ◽  
Vol 23 (3) ◽  
pp. 335-339 ◽  
Author(s):  
Lucas N. Owen ◽  
Lawrence E. Steckel ◽  
Cliford H. Koger ◽  
Christopher L. Main ◽  
Thomas C. Mueller
Keyword(s):  
Field Studies ◽  
Conyza Canadensis ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
No Till ◽  
Residual Herbicide

Field studies were conducted in 2007 and 2008 to evaluate fall applications of herbicides to control glyphosate-resistant (GR) horseweed before planting cotton. Fall treatments were compared with spring treatments for control of GR horseweed and effect on seed cotton yield. Fall and spring treatments with and without residual herbicides were also compared. No differences were observed for control of GR horseweed or seed cotton yield between fall and spring application timings. However, a difference was observed between fall applications with and without a residual herbicide. Fall applications that contained residual herbicides provided 86% control of GR horseweed and yielded 2,360 kg/ha of seed cotton. Fall applications that did not contain a residual herbicide only provided 70% control of GR horseweed and yielded 2,010 kg/ha of seed cotton. No benefit was observed from spring applications that contained a residual herbicide. This research indicates that glyphosate-resistant horseweed can be controlled with fall- or spring-applied burndown herbicides, and fall applications should include a residual herbicide for best results.

Spotted Spurge (Euphorbia maculata) Interference with Cotton (Gossypium hirsutum)

Weed Science ◽  
1994 ◽  
Vol 42 (4) ◽  
pp. 553-555 ◽  
Author(s):  
Mohammad T. Bararpour ◽  
Ronald E. Talbert ◽  
Robert E. Frans
Keyword(s):  
Linear Relationship ◽  
Dry Weight ◽  
Field Studies ◽  
Yield Reduction ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Percent Reduction ◽  
Cotton Boll ◽  
Positive Linear Relationship ◽  
Seed Cotton Yield

Field studies were conducted from 1988 through 1990 in Fayetteville, AR, to measure competitiveness of spotted spurge in cotton. Population levels were established by transplanting seedlings from other field areas. There was a positive linear relationship between cotton boll numbers and seed cotton yield. Percent reduction in cotton height, leaf area, dry weight, boll numbers, and seed cotton yield increased as spotted spurge densities increased. Seed cotton yield reduction was 47, 57, and 85% for spotted spurge densities of 5, 10, and 50 spotted spurge plants m–1of row.

Weed Management in Cotton (Gossypium hirsutum) with Soil-Applied and Post-Directed Herbicides

1997 ◽  
Vol 11 (2) ◽  
pp. 221-226 ◽  
Author(s):  
John W. Wilcut ◽  
David L. Jordan ◽  
William K. Vencill ◽  
John S. Richburg
Keyword(s):  
Gossypium Hirsutum ◽  
Weed Management ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Yellow Nutsedge ◽  
Herbicide Programs ◽  
Better Than

Broadleaf weed and yellow nutsedge control with herbicide programs containing pendimethalin and combinations of fomesafen, fluometuron, and norflurazon applied alone or with POST-directed applications of MSMA or fluometuron plus MSMA was evaluated. Soil-applied herbicide combinations containing fomesafen controlled yellow nutsedge better than combinations of norflurazon and fluometuron but did not provide better entireleaf, ivyleaf, pitted, and tall morningglory or sicklepod control. Fluometuron plus MSMA controlled morningglories and sicklepod more effectively than MSMA. Seed cotton yield was greater in one of two years when fomesafen was applied and was associated with better yellow nutsedge control.

Augmenting the Moth(Bactra verutana)in Field Plots for Early-Season Suppression of Purple Nutsedge(Cyperus rotundus)

Weed Science ◽  
1978 ◽  
Vol 26 (6) ◽  
pp. 703-710 ◽  
Author(s):  
K. E. Frick ◽  
J. M. Chandler
Keyword(s):  
Field Studies ◽  
Cyperus Rotundus ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Larval Release ◽  
Early Season ◽  
Purple Nutsedge ◽  
Seed Cotton Yield ◽  
Field Plots ◽  
Aboveground Growth

In six years of field studies, early-season releases of the native mothBactra verutanaZeller were evaluated as a biological control for purple nutsedge(Cyperus rotundusL.). Establishment from adult releases required at least 10 pairs of moths per release; establishment from larval release could be achieved with a single release of two or five newly-emerged larvae per shoot. When shoots averaged 4 or 7.5 cm high at the time of such releases, aboveground growth was reduced 32 to 62% after 30 days. Three to eight weekly releases of larvae reduced the topgrowth of nutsedge planted in rows of cotton(Gossypium hirsutumL. ‘Stoneville 213’) 30 to 68% 6 to 8 weeks after the last release. Weekly releases of about five larvae per shoot repeated three, four, or five times in 1976 and 1977 reduced nutsedge growth so that seed cotton yield equalled that of cotton in plots without nutsedge. MSMA (monosodium methanearsonate) applied at the rate of 2.2 kg/ha 5 and 7 weeks after cotton emergence gave greater control of purple nutsedge topgrowth and a yield of seed cotton equal to that resulting from three to five larval releases of about five larvae per shoot beginning when purple nutsedge averaged 7.5 cm high. When MSMA was applied at 7.5 and 8.5 weeks after cotton emergence, the addition of two early-season releases of larvae were also necessary to achieve nutsedge control and seed cotton yield equal to that produced by three to five releases of larvae.

scholarly journals Altering Growth Characters and Seed Cotton Yield under Foliar Application of Boron

2019 ◽  
pp. 1-5 ◽  
Author(s):  
Md. Tasdiqur Rahman ◽  
M. Moynul Haque ◽  
Md. Gazi Golum Mortuza ◽  
Md. Sadek Hossain ◽  
Md. Shah Newaz Chowdhury
Keyword(s):  
Cotton Plant ◽  
Significant Influence ◽  
Foliar Application ◽  
Block Design ◽  
Growing Season ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Cotton Variety ◽  
Seed Cotton Yield ◽  
Growth Characters

The experiment was conducted at Central Cotton Research Farm, Sreepur, Gazipur during cotton growing season of 2009-2011. Cotton variety cv. CB-10 was used under experiment. Eight levels of boron (0.0, 0.25, 0.50, 0.75, 1.0, 1.25, 1.50 and 1.75, g L-1 water) were sprayed at reproductive stage of cotton as treatment. The design of the experiment was randomized completely block design (RCBD) with three replications. Result revealed that, foliar application of boron has significant influence on different traits of cotton. Foliar application of boron may improve the performance of cotton plant by reducing the percentage of boll shattering and increasing the growth of square for better quality fiber. 

Cover Crops Suppression of Palmer Amaranth (Amaranthus palmeri) in Cotton

2017 ◽  
Vol 32 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Matheus G. Palhano ◽  
Jason K. Norsworthy ◽  
Tom Barber
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Field Experiments ◽  
Palmer Amaranth ◽  
Cotton Yield ◽  
Cotton Production ◽  
Seed Cotton ◽  
Cereal Rye ◽  
Seed Cotton Yield ◽  
Weed Emergence

AbstractWith the recent confirmation of protoporphyrinogen oxidase (PPO)-resistant Palmer amaranth in the US South, concern is increasing about the sustainability of weed management in cotton production systems. Cover crops can help to alleviate this problem, as they can suppress weed emergence via allelochemicals and/or a physical residue barrier. Field experiments were conducted in 2014 and 2015 at the Arkansas Agricultural Research and Extension Center to evaluate various cover crops for suppressing weed emergence and protecting cotton yield. In both years, cereal rye and wheat had the highest biomass production, whereas the amount of biomass present in spring did not differ among the remaining cover crops. All cover crops initially diminished Palmer amaranth emergence. However, cereal rye provided the greatest suppression, with 83% less emergence than in no cover crop plots. Physical suppression of Palmer amaranth and other weeds with cereal residues is probably the greatest contributor to reducing weed emergence. Seed cotton yield in the legume and rapeseed cover crop plots were similar when compared with the no cover crop treatment. The seed cotton yield collected from cereal cover crop plots was lower than from other treatments due to decreased cotton stand.

Sign in / Sign up

Export Citation Format

Share Document