Selective Control of Johnsongrass (<i>Sorghum halepense</i>) in Cotton (<i>Gossypium hirsutum</i>) with Foliar Herbicides

Carter, Charles H.; Keeley, Paul E.

doi:10.1017/s0043174500053923

Cited by 14 publications

(18 citation statements)

References 6 publications

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“…Johnsongrass is a troublesome weed in cotton and other southern row crops (Richard 1990; Williams and Hayes 1984). Johnsongrass interference for 3 wk or more can reduce cotton yields 62 to 88% (Bridges and Chandler 1987;Carter and Keeley 1987;Thullen 1981, 1989;Keeley et al 1987). Additionally, johnsongrass present at cotton harvest contributes to lower lint percentages, greater ginning losses, and poorer grade than when johnsongrass is not present (Keeley et aI.…”

Section: Introductionmentioning

confidence: 99%

Bromoxynil Antagonizes Johnsongrass (Sorghum halepense) Control with Graminicides

et al. 1998

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Field studies were conducted over 2 yr to evaluate rhizome johnsongrass control with tank mixtures and sequential applications of bromoxynil at 1.7 kg ai/ha and the graminicides clethodim, fluazifop-P, and quizalofop-P. When compared with the graminicide alone, bromoxynil reduced johnsongrass control 28 days after treatment (DAT) 20, 36, and 55% when applied in combination with clethodim, fluazifop-P, and quizalofop-P, respectively. Application of bromoxynil 7, 3, and 1 d before or 1, 3, and 7 d after all graminicides reduced antagonism when compared with the bromoxynil plus graminicide mixtures. Based on johnsongrass control 28 DAT, antagonism was precluded when bromoxynil was applied 3 d before clethodim and 7 d before fluazifop-P and quizalofop-P. Application of bromoxynil 3 and 7 d after quizalofop-P and 7 d after clethodim also precluded antagonism. The antagonistic tank mixtures of bromoxynil and graminicides reduced cotton yield 17% because of reduced johnsongrass control compared with graminicides alone. A 3-d or greater application interval between bromoxynil and the graminicides was necessary to maximize cotton yield.

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Section: Introductionmentioning

confidence: 99%

Bromoxynil Antagonizes Johnsongrass (Sorghum halepense) Control with Graminicides

et al. 1998

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“…Soil-applied herbicides, cultivation, and postemergence-directed (PDIR) 4 herbicides currently are re quired for acceptable weed control in cotton (1). Al though selective graminicides are available for postemergence over-the-top (POTT) 4 application in cot ton, there currently are no herbicides to control broadleaf weeds without injuring cotton when applied POTT.…”

Section: Introductionmentioning

confidence: 99%

“…Sethoxydim applied POTT is an alternative to soil-applied herbicides for controlling annual grasses in cotton (2,20) and other dicotyledonous crops (14,22). Sethoxydim also controls perennial grasses (4,27). A total POST herbicide Table 1.…”

Section: Introductionmentioning

confidence: 99%

Total Postemergence Herbicide Programs in Cotton (Gossypium Hirsutum) with Sethoxydim and DPX-PE350

1993

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Weed control and cotton yield with a herbicide program of sethoxydim and DPX-PE350 applied postemergence over-the-top was compared with that of a standard herbicide program of trifluralin applied PPI plus fluometuron applied PRE plus methazole and MSMA applied postemergence-directed. Control of pitted and entireleaf morningglory, smooth pigweed, and prickly sida was similar with the postemergence over-the-top program and the standard herbicide program when DPX-PE350 was applied to cotton in the V2 or V4 growth stages. Less weed control and lower yield were observed when DPX-PE350 was applied to V6-stage cotton. Good control of annual grasses was obtained with all herbicide programs.

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“…emergence in 1994 when com followed cotton. Selective graminicides applied to soybean or cotton were found to provide excellent johnsongrass control the year following treatment (Banks and Bundschuh 1989;Carter and Keeley 1987;Keeley et al 1987). Johnsongrass biomass at the end of the growing seasons is indicative of johnsongrass density and competition with corn (Table 4), Although soil-applied herbicides reduced seedling johnsongrass early in the season, johnsongrass biomass for these treatments was equal to the weedy check in 1992.…”

Section: Resultsmentioning

confidence: 99%

Johnsongrass (Sorghum halepense) Control Systems for Field Corn (Zea mays) Utilizing Crop Rotation and Herbicides

Ghosheh

Chandler

1998

Weed technol.

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Johnsongrass control systems that included commercially available corn herbicides applied to crop sequences of continuous corn or corn–cotton–corn rotation were evaluated over a 3-yr period at the Texas Agricultural Experiment Station in Burleson County. Herbicide treatments evaluated were EPTC + R-25788 applied preplant incorporated (PPI); metolachlor applied preemergence (PRE); nicosulfuron applied postemergence (POST); and the combination of metolachlor PRE and glyphosate POST applied after corn harvest. Weed control practices applied to plots planted to cotton in the second growing season provided excellent johnsongrass control (≈ 95%). Visual control ratings indicated that nicosulfuron provided the best johnsongrass control (> 80%) among the herbicides evaluated all three years. Metolachlor and glyphosate combinations provided acceptable johnsongrass control the third year of the experiment in both cropping sequences. Corn grain yield and johnsongrass control were best in cotton-rotated plots. The highest returns observed in continuous corn were from either nicosulfuron or the combination of metolachlor and glyphosate. Net returns for all control systems in corn–cotton–corn rotated plots were greater than the weedy check and were equivalent to the lead systems in continuous corn.

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Selective Control of Johnsongrass (Sorghum halepense) in Cotton (Gossypium hirsutum) with Foliar Herbicides

Cited by 14 publications

References 6 publications

Bromoxynil Antagonizes Johnsongrass (Sorghum halepense) Control with Graminicides

Bromoxynil Antagonizes Johnsongrass (Sorghum halepense) Control with Graminicides

Total Postemergence Herbicide Programs in Cotton (Gossypium Hirsutum) with Sethoxydim and DPX-PE350

Johnsongrass (Sorghum halepense) Control Systems for Field Corn (Zea mays) Utilizing Crop Rotation and Herbicides

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