Low-Rate Applications of Herbicides in Conventional and Reduced Tillage Potatoes (Solanum tuberosum)

1990 ◽  
Vol 4 (3) ◽  
pp. 509-513 ◽  
Author(s):  
Russell W. Wallace ◽  
Robin R. Bellinder
Keyword(s):  
Solanum Tuberosum ◽  
Weed Control ◽  
Production Systems ◽  
Potato Production ◽  
Reduced Tillage ◽  
Tillage Systems ◽  
Common Lambsquarters ◽  
Redroot Pigweed ◽  
Significant Yield ◽  
Low Rate

Linuron, metribuzin, oryzalin, and metolachlor were applied at recommended (1X) and two-thirds (0.67X) rates to evaluate control of redroot pigweed and common lambsquarters in conventional and rye-stubble reduced-tillage potato production systems. Regardless of tillage, common lambsquarters control was satisfactory during both seasons at both rates of linuron, metribuzin, and oryzalin. Redroot pigweed control by these three herbicides, although excellent in 1988, was poor in RT plots during 1987. Yields did not differ between tillage systems. Reduced weed control with metolachlor during both seasons, and possible crop injury with linuron in 1987 resulted in significant yield reductions.

Potato (Solanum tuberosum) Yields and Weed Populations in Conventional and Reduced Tillage Systems

1989 ◽  
Vol 3 (4) ◽  
pp. 590-595 ◽  
Author(s):  
Russell W. Wallace ◽  
Robin R. Bellinder
Keyword(s):  
Solanum Tuberosum ◽  
Weed Control ◽  
Reduced Tillage ◽  
Tillage Systems ◽  
Early Season ◽  
Common Lambsquarters ◽  
Early Emergence ◽  
Tillage System ◽  
Potato Yields ◽  
Conventional Ct

Linuron, metribuzin, oryzalin, and dinoseb were evaluated for weed control in conventional (CT) and rye-stubble reduced-tillage (RT) systems for potatoes. Early season control of weeds was equivalent for all herbicides in both tillage systems. In 1985, redroot pigweed populations were significantly greater in RT than in CT control plots. Populations of common lambsquarters were equivalent, regardless of the tillage system. In 1986, the rye mulch reduced early emergence of both species in untreated RT plots when compared to the untreated CT controls. During both seasons, potato stands decreased 16% with RT. In 1985, total yields did not differ between tillage systems; however, in 1986, total potato yields in RT plots decreased an average of 22% compared to yields in CT plots.

Reduced Rates of Herbicides Following Hilling Controlled Weeds in Conventional and Reduced Tillage Potato (Solanum tuberosum) Production

1996 ◽  
Vol 10 (2) ◽  
pp. 311-316 ◽  
Author(s):  
Robin R. Bellinder ◽  
Russell W. Wallace ◽  
Erik D. Wilkins
Keyword(s):  
Solanum Tuberosum ◽  
Weed Control ◽  
Conventional Tillage ◽  
Reduced Tillage ◽  
Split Application ◽  
Tillage Systems ◽  
Herbicide Treatment

Time of hilling (4, 5, or 6 weeks after planting; WAP) and 0.5x, 1x, and split (0.5x + 0.5x) rates of metolachlor + metribuzin were evaluated in conventional tillage (CT) and rye-stubble, reduced tillage (RT) potato plots. Weed populations 4 to 10 WAP were generally higher in CT than in RT. Weed control was excellent in both tillage systems when 1x rates of metolachlor + metribuzin were applied delayed preemergence, or in a split application where 0.5x was applied delayed PRE and hilled 6 WAP, and followed with a second application of 0.5x metolachlor + metribuzin 7 days after hilling (DAH). Weed control with 0.5x rates of metolachlor + metribuzin applied 7 DAH, when hilled 4 and 5 WAP, was equivalent to the lx and split-rate treatments. Weed control was reduced only when hilling was delayed to 6 WAP and 0.5x of metolachlor + metribuzin applied 7 DAH. Total yields were not influenced by tillage, hilling, or herbicide treatment, however, larger numbers of green and small-sized tubers reduced marketable yields in RT.

Effect of Tillage and Soil-Applied Herbicides with Micro-Rate Herbicide Programs on Weed Control and Sugarbeet Growth

2009 ◽  
Vol 23 (2) ◽  
pp. 264-269 ◽  
Author(s):  
Scott L. Bollman ◽  
Christy L. Sprague
Keyword(s):  
Weed Control ◽  
Field Trials ◽  
Tillage Systems ◽  
Common Lambsquarters ◽  
Redroot Pigweed ◽  
Giant Foxtail ◽  
Herbicide Treatments ◽  
Herbicide Programs

Field trials were conducted to determine if tillage and soil-applied herbicides had an effect on weed control and sugarbeet growth with a micro-rate herbicide program. Sugarbeet emergence was earlier in the moldboard plowed system compared with the chisel plowed system at three of four sites. Conditions were dry and sugarbeets emerged 5 d later in the moldboard plowed system compared with the chisel plowed system at the fourth site. Even though the rate of sugarbeet emergence differed between tillage systems at all four sites, final sugarbeet populations did not differ at two of the four sites. Sugarbeet injury from PRE treatments ofS-metolachlor, ethofumesate, and ethofumesate plus pyrazon, followed by four POST micro-rate applications, ranged from 11 to 27% and 1 to 18% in the chisel and moldboard plowed systems, respectively, 6 wk after planting (WAP). Under wet conditions, sugarbeet stand was reduced and injury was greatest from PRE applications ofS-metolachlor. Common lambsquarters, pigweed (redroot pigweed and Powell amaranth), and giant foxtail control in mid-August was consistently higher when a PRE herbicide was applied prior to micro-rate herbicide treatments. Even though there were differences between PRE and no-PRE treatments with respect to sugarbeet injury and weed control, recoverable white sucrose yield did not differ between herbicide treatments. However, recoverable white sucrose yield was greater in the moldboard plowed treatments compared with the chisel plowed treatments at three out of the four sites.

Weed Control and Potato (Solanum Tuberosum) Crop Response With Low Rates of Sulfentrazone Applied Postemergence With Metribuzin

2006 ◽  
Vol 20 (4) ◽  
pp. 1023-1029 ◽  
Author(s):  
Pamela J.S. Hutchinson ◽  
Brent R. Beutler ◽  
Daniel M. Hancock
Keyword(s):  
Solanum Tuberosum ◽  
Weed Control ◽  
Potato Crop ◽  
Field Trials ◽  
Russet Burbank ◽  
Crop Response ◽  
Common Lambsquarters ◽  
Hairy Nightshade ◽  
Redroot Pigweed ◽  
Crop Injury

Sulfentrazone was applied POST at 13, 26, or 53 g ai/ha alone or in combination with metribuzin at 280 or 420 g ai/ha in field trials conducted with ‘Russet Burbank’ potatoes in 2002 to 2004. Sulfentrazone alone provided less than 84% redroot pigweed, common lambsquarters, and kochia control, although control usually improved to 90% or greater when metribuzin was included. Hairy nightshade control reached 90% only when the highest rates of both herbicides were applied in combination. Sulfentrazone alone did not provide any volunteer oat control, whereas control was 85% when the highest metribuzin rate was included. Potato crop injury, consisting of chlorosis, interveinal blackening of the leaves, eventual necrosis, leaf malformation, and plant stunting, increased as the sulfentrazone rate increased. In contrast, injury decreased as metribuzin rate increased from 0 to 420 g/ha, when averaged across sulfentrazone rates. Reduction in injury levels and increased weed control translated to improved tuber yields as metribuzin rate increased. However, when sulfentrazone was combined with the highest metribuzin rate, potato injury was still relatively high at 26 and 18% at 1 and 4 wk after treatment, and acceptance of sulfentrazone applied POST with metribuzin by potato growers is unlikely.

Preemergence Herbicides for Potential Use in Potato Production

2012 ◽  
Vol 26 (4) ◽  
pp. 731-739 ◽  
Author(s):  
Rick A. Boydston ◽  
Joel Felix ◽  
Kassim Al-Khatib
Keyword(s):  
Weed Control ◽  
Potato Production ◽  
Field Trials ◽  
Common Lambsquarters ◽  
Hairy Nightshade ◽  
Redroot Pigweed ◽  
Herbicide Treatments ◽  
Preemergence Herbicides ◽  
Potential Use

Field trials were conducted in 2009 and 2010 near Paterson, WA and Ontario, OR to evaluate weed control and potato tolerance to PRE-applied pyroxasulfone, saflufenacil, and KSU12800 herbicides. Pyroxasulfone at 0.09 to 0.15 kg ai ha−1and saflufenacil at 0.05 to 0.07 kg ai ha−1applied PRE alone or in tank mixes with several currently labeled herbicides did not injure potatoes at either site in both years. KSU12800 at 0.15 kg ai ha−1injured potatoes from 18 to 26% for a period of about 4 wk after emergence at Ontario both years. In addition, KSU12800 at 0.29 and 0.45 kg ha−1injured potatoes from 17 to 38% at 17 d after treatment (DAT) at Paterson in 2009. Pyroxasulfone at 0.15 kg ha−1controlled barnyardgrass, hairy nightshade, and redroot pigweed 96% or greater, but control of common lambsquarters was variable. Saflufenacil at 0.07 kg ha−1provided greater than 93% control of common lambsquarters, hairy nightshade, and redroot pigweed at both sites in 2010. KSU12800 at 0.15 kg ha−1controlled common lambsquarters, hairy nightshade, and redroot pigweed 99% or more at Ontario, but only 87 to 93% at Paterson in 2010. These herbicides did not reduce yield of U.S. no. 1 tubers or total tuber yields compared to standard labeled herbicide treatments when weed control was adequate.

Spring-seeded cereal rye suppresses weeds in watermelon

2019 ◽  
Vol 34 (1) ◽  
pp. 42-47
Author(s):  
Kurt M. Vollmer ◽  
Thierry E. Besançon ◽  
Baylee L. Carr ◽  
Mark J. VanGessel ◽  
Barbara A. Scott
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Cover Crop ◽  
Production Systems ◽  
Fruit Weight ◽  
Cereal Rye ◽  
Common Lambsquarters ◽  
Cover Cropping ◽  
Significant Yield ◽  
Marketable Fruit

AbstractWeeds can cause significant yield loss in watermelon production systems. Commercially acceptable weed control is difficult to achieve, even with heavy reliance on herbicides. A study was conducted to evaluate a spring-seeded cereal rye cover crop with different herbicide application timings for weed management between row middles in watermelon production systems. Common lambsquarters and pigweed species (namely, Palmer amaranth and smooth pigweed) densities and biomasses were often lower with cereal rye compared with no cereal rye, regardless of herbicide treatment. The presence of cereal rye did not negatively influence the number of marketable watermelon fruit, but average marketable fruit weight in cereal rye versus no cereal rye treatments varied by location. These results demonstrate that a spring-seeded cereal rye cover crop can help reduce weed density and weed biomass, and potentially enhance overall weed control. Cereal rye alone did not provide full-season weed control, so additional research is needed to determine the best methods to integrate spring cover cropping with other weed management tactics in watermelon for effective, full-season control.

Broadleaf Weed Control in Potatoes (Solanum tuberosum) with Postemergence Directed Herbicides

1993 ◽  
Vol 7 (2) ◽  
pp. 298-303 ◽  
Author(s):  
Charlotte V. Eberlein ◽  
Mary J. Guttieri ◽  
Felix N. Fletcher
Keyword(s):  
Solanum Tuberosum ◽  
Weed Control ◽  
Total Yield ◽  
Field Studies ◽  
Common Lambsquarters ◽  
Hairy Nightshade ◽  
Redroot Pigweed ◽  
Initial Injury

Field studies were conducted to evaluate potato injury and weed control with postemergence-directed (PDIR) bromoxynil, glufosinate, or monocarbamide dihydrogen sulfate (MCDS). All three herbicides controlled hairy nightshade, common lambsquarters, redroot pigweed, and kochia ≥ 85%, depending on rate, with either mid- or late-PDIR treatment. Bromoxynil or MCDS caused 5 to 6% more initial injury with mid- than with late-PDIR treatment, but total yield and yield of U.S. #1 tubers were not reduced by either herbicide. PDIR glufosinate caused moderate injury at 0.84 kg ha−1, the rate needed for acceptable (≥ 85%) weed control. Total yield was reduced 10% and U.S. #1 yield was reduced 30% by PDIR glufosinate at 0.84 kg ha−1. Thus bromoxynil and MCDS showed potential for use as PDIR treatments in potatoes, but glufosinate did not.

Preemergence Weed Control in Potatoes (Solanum tuberosum) with Rimsulfuron Mixtures

1997 ◽  
Vol 11 (4) ◽  
pp. 755-761 ◽  
Author(s):  
Mary J. Guttieri ◽  
Charlotte V. Eberlein
Keyword(s):  
Solanum Tuberosum ◽  
Potato Tuber ◽  
Weed Control ◽  
Environmental Conditions ◽  
Tuber Yield ◽  
Field Studies ◽  
Common Lambsquarters ◽  
Hairy Nightshade ◽  
Redroot Pigweed ◽  
Green Foxtail

Field studies were conducted to evaluate preemergence weed control in irrigated potatoes with rimsulfuron plus metribuzin or three-way mixtures of rimsulfuron plus metribuzin plus EPTC, metolachlor, or pendimethalin. Redroot pigweed control was ≥ 96% with rimsulfuron plus metribuzin at 18 g ai/ha + 140 g/ha, and common lambsquarters control was ≥ 97% with rimsulfuron plus metribuzin at 26 g/ha + 210 g/ha. Hairy nightshade control with rimsulfuron plus metribuzin ranged from 58 to 99%, and green foxtail control ranged from 50 to 98%. EPTC, metolachlor, or pendimethalin rates required for acceptable green foxtail and hairy nightshade control in combination with a given rate of rimsulfuron plus metribuzin varied with environmental conditions. Potato tuber yield generally improved with rimsulfuron plus metribuzin application.

Postemergence Weed Control in Potatoes (Solanum tuberosum) with Rimsulfuron

1994 ◽  
Vol 8 (3) ◽  
pp. 428-435 ◽  
Author(s):  
Charlotte V. Eberlein ◽  
James C. Whitmore ◽  
Charles E. Stanger ◽  
Mary J. Guttieri
Keyword(s):  
Solanum Tuberosum ◽  
Weed Control ◽  
Field Studies ◽  
Fresh Market ◽  
Common Lambsquarters ◽  
Hairy Nightshade ◽  
Seed Tubers ◽  
Redroot Pigweed

Greenhouse and field studies were conducted to examine weed control with, and potato tolerance to, rimsulfuron or rimsulfuron + metribuzin applied POST. In greenhouse trials, hairy nightshade control with rimsulfuron applied POST at 9 to 35 g/ha was ≥ 90%, but cutleaf nightshade control was < 30%. In field studies, rimsulfuron at 18 to 35 g/ha provided ≥ 85% control of hairy nightshade, redroot pigweed, tumble pigweed, and shepherd's-purse; 75 to 82% control of volunteer oats; and 25 to 87% control of common lambsquarters. Common lambsquarters control was increased to 92 to 100% when rimsulfuron at 18 to 35 g/ha was applied in combination with metribuzin at 280 g/ha. Hairy nightshade and redroot pigweed control usually were not improved by adding metribuzin to the rimsulfuron spray mixture and tumble pigweed and shepherd's-purse control were improved only slightly. Volunteer oat control with rimsulfuron sometimes was antagonized by the addition of metribuzin to the spray mixture. In weed-free trials, yield of potatoes grown for the fresh market or to produce seed tubers was not reduced by rimsulfuron at rates as high as 70 g/ha.

Influence of Herbicides and Tillage on Weed Control, Yield, and Quality of Cabbage (Brassica oleracea L. var. capitata)

1996 ◽  
Vol 10 (1) ◽  
pp. 50-54 ◽  
Author(s):  
Greg D. Hoyt ◽  
A. Richard Bonanno ◽  
Glenn C. Parker
Keyword(s):  
Weed Control ◽  
Production Systems ◽  
Conventional Tillage ◽  
Tillage Systems ◽  
Common Lambsquarters ◽  
Yield And Quality ◽  
Herbicide Treatments ◽  
Common Purslane ◽  
Strip Tillage ◽  
Tillage Method

Transplanted cabbage was grown in conventional-tillage (100% cultivated) and strip-tillage (25% cultivated and 75% residue) production systems with various herbicide treatments to evaluate weed control and cabbage yield. DCPA at 9 kg ai/ha, napropamide at 1.1 kg ai/ha, oxyfluorfen at 0.3 kg ai/ha, and oxyfluorfen at 0.2 kg ai/ha plus napropamide at 1.1 kg ai/ha provided commercially acceptable (> 80%) control of carpetweed, swinecress, large crabgrass, redroot pigweed, and common lambsquarters under both tillage systems. However, only oxyfluorfen plus napropamide provided control of eclipta. At a second location, all herbicides controlled common purslane and barnyardgrass and all but DCPA controlled hairy galinsoga. Overall, cabbage yields were the same between conventional and strip-tillage systems, and among herbicide treatments when average cabbage head weights across tillage method were pooled.

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