SAN 582 Efficacy and Tolerance in Potato (Solanum tuberosum)

1999 ◽  
Vol 13 (1) ◽  
pp. 71-76 ◽  
Author(s):  
Dennis J. Tonks ◽  
Charlotte V. Eberlein ◽  
Mary J. Guttieri ◽  
Bart A. Brinkman
Keyword(s):  
Solanum Tuberosum ◽  
Russet Burbank Potato ◽  
Field Studies ◽  
Russet Burbank ◽  
Control Efficacy ◽  
Common Lambsquarters ◽  
Hairy Nightshade ◽  
Green Foxtail ◽  
Good Potential ◽  
Better Than

Field studies were conducted to examine weed control efficacy and crop injury with SAN 582 (proposed name, dimethenamid) in irrigated ‘Russet Burbank’ potato. SAN 582 applied preemergence (PRE) at 1.1 to 1.7 kg ai/ha controlled light to moderate infestations of redroot pigweed, common lambsquarters, and hairy nightshade > 90%. Season-long control of these species with mixtures of SAN 582 plus metribuzin or rimsulfuron was > 98% and was similar to or better than registered mixtures. Green foxtail control with SAN 582 alone ranged from 83 to 100%, depending on rate and year. SAN 582 mixtures with metribuzin or rimsulfuron usually controlled green foxtail > 90%. In weed-free plots, SAN 582 was applied alone PRE or early postemergence (EPOST) at rates up to 3.4 kg/ha. SAN 582 applied EPOST usually caused 10 to 30% more potato injury than when applied PRE, but U.S. No. 1 yield was not reduced by SAN 582 applied either PRE or EPOST. SAN 582 shows good potential for PRE use in irrigated potato.

Efficacy and Economics of Cultivation for Weed Control in Potato (Solanum tuberosum)

1997 ◽  
Vol 11 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Charlotte V. Eberlein ◽  
Paul E. Patterson ◽  
Mary J. Guttieri ◽  
Jeffrey C. Stark
Keyword(s):  
Solanum Tuberosum ◽  
Weed Control ◽  
Standard Treatment ◽  
Control Efficacy ◽  
Weed Biomass ◽  
Common Lambsquarters ◽  
Hairy Nightshade ◽  
Green Foxtail ◽  
One Year ◽  
Control Net

A 3-year study was conducted in irrigated potato to compare weed control efficacy and economics of hilling plus one or two cultivations with the standard treatment of hilling plus a preemergence application of pendimethalin plus metribuzin. Trials were conducted under both weedy and weed-free conditions. Common lambsquarters and redroot pigweed were present in weedy treatments each year; significant populations of hairy nightshade and green foxtail also were present one year. When weed populations were low or moderate (< 45 plants/m2), total weed biomass in the hilling plus one cultivation treatment was reduced 98 to 99% relative to the weedy control, and U.S. No. 1 tuber yields were equal to the standard treatment. However, when weed populations were high (145 plants/m2), hilling plus one cultivation and hilling plus two cultivations provided only 30% and 61% reduction in weed biomass, respectively, and U.S. No. 1 tuber yields were 35% and 13% less, respectively, than the standard treatment. The standard treatment provided 99% reduction in total weed biomass each year, and yields were equal to the weed-free, hill plus no cultivation control. Net return was $37 to $100/ha higher for the hilling plus one cultivation treatment compared to the standard treatment when weed populations were moderate or low, but was $808/ha less than the standard treatment when weed populations were high.

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.

Weed Control in Potato (Solanum tuberosum) with Rimsulfuron and Metribuzin

1998 ◽  
Vol 12 (2) ◽  
pp. 406-409 ◽  
Author(s):  
Karen A. Renner ◽  
Gary E. Powell
Keyword(s):  
Solanum Tuberosum ◽  
Weed Control ◽  
Russet Burbank Potato ◽  
Field Studies ◽  
Potato Yield ◽  
Russet Burbank ◽  
Common Lambsquarters ◽  
Wild Buckwheat ◽  
Redroot Pigweed

Field studies were conducted for 3 yr to determine weed and potato response to preemergence (PRE) and postemergence (POST) applications of rimsulfuron, metribuzin, and rimsulfuron plus metribuzin. Preemergence applications of rimsulfuron at 27 g ai/ha and POST applications at 18 g/ha controlled barnyardgrass, redroot pigweed, and wild buckwheat. Common lambsquarters was controlled by PRE or POST applications of metribuzin or a tank mixture of 18 g/ha rimsulfuron plus 140 g ai/ha of metribuzin. ‘Russet Burbank’ potato was relatively tolerant to all rimsulfuron, metribuzin, and rimsulfuron plus metribuzin applications, and potato yield was not reduced compared to the hand-weeded control.

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.

Hairy Nightshade (Solanum sarrachoides) Control in Potatoes (Solanum tuberosum) with Bentazon Plus Additives

1992 ◽  
Vol 6 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Charlotte V. Eberlein ◽  
Mary J. Guttieri ◽  
William C. Schaffers
Keyword(s):  
Solanum Tuberosum ◽  
Nonionic Surfactant ◽  
Seed Oil ◽  
Field Studies ◽  
Potato Yield ◽  
Time Of Application ◽  
Hairy Nightshade ◽  
Urea Ammonium Nitrate ◽  
Petroleum Oil ◽  
Better Than

Field studies were conducted to examine hairy nightshade control with, and potato tolerance to, bentazon or bentazon plus nonionic surfactant (NIS), petroleum oil concentrate (POC), methylated seed oil (MSO), BCH-815, or urea-ammonium nitrate (UAN). Bentazon treatments were applied early or late POST. Hairy nightshade control with bentazon at 0.56 kg ha–1plus POC, MSO, BCH-815, or UAN was equal to or better than bentazon alone at 1.12 kg ha–1regardless of time of application. Potato injury with bentazon plus additives applied late POST was sometimes greater than with bentazon alone, but use of additives did not reduce potato yield or quality. Yield of US ♯1 tubers was lower when bentazon was applied late POST than when applied early POST in one of two years.

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.

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.

Evaluation of Imazosulfuron for Yellow Nutsedge (Cyperus esculentus) and Broadleaf Weed Control in Potato

2010 ◽  
Vol 24 (4) ◽  
pp. 471-477 ◽  
Author(s):  
Joel Felix ◽  
Rick A. Boydston
Keyword(s):  
Weed Control ◽  
Field Studies ◽  
Cyperus Esculentus ◽  
Common Lambsquarters ◽  
Yellow Nutsedge ◽  
Hairy Nightshade ◽  
Soil Persistence ◽  
Potato Foliage ◽  
Sequential Treatments ◽  
Better Than

Field studies were conducted in 2007 and 2008 near Nyssa, OR, and Pasco and Paterson, WA to evaluate yellow nutsedge and broadleaf weed control and potato tolerance to imazosulfuron. No injury symptoms from imazosulfuron were evident on potato at Nyssa, whereas in Washington, imazosulfuron caused some chlorosis of potato foliage ranging from 6 to 15% and < 4% at 6 and 15 d after POST application, respectively. Sequential applications of imazosulfuron controlled yellow nutsedge better than a single PRE application. Sequential applications of imazosulfuron or imazosulfuron in combination withs-metolachlor controlled yellow nutsedge > 92 and 89% at 21 and 42 d after POST applications, respectively. Imazosulfuron controlled ≥ 98% of common lambsquarters and 100% of pigweed species. Imazosulfuron provided season-long control of common mallow at Nyssa. However, imazosulfuron failed to control Russian thistle at Paterson, and only partially controlled hairy nightshade. Yield of U.S. no. 1 potato at Nyssa ranged from 44 to 54 T ha−1and 42 to 52 T ha−1for imazosulfuron PRE and imazosulfuron sequential treatments in 2007 and 2008, respectively. U.S. no. 1 potato yield following imazosulfuron PRE and sequential treatments at Pasco ranged from 49 to 57 T ha−1in 2007, and at Paterson from 36 to 54 T ha−1in 2008. Lower yields in 2008 were attributed to poor control of hairy nightshade. Imazosulfuron has potential to become a valuable tool for yellow nutsedge management in potato. Studies are needed to evaluate the soil persistence for imazosulfuron in order to determine safety to crops grown in rotation with potato.

Tolpyralate Efficacy: Part 1. Biologically Effective Dose of Tolpyralate for Control of Annual Grass and Broadleaf Weeds in Corn

2018 ◽  
Vol 32 (6) ◽  
pp. 698-706 ◽  
Author(s):  
Brendan A. Metzger ◽  
Nader Soltani ◽  
Alan J. Raeder ◽  
David C. Hooker ◽  
Darren E. Robinson ◽  
...  
Keyword(s):  
Effective Dose ◽  
Weed Management ◽  
Field Studies ◽  
Biologically Effective Dose ◽  
Limited Information ◽  
Weed Species ◽  
Common Lambsquarters ◽  
Wild Mustard ◽  
Low Field ◽  
Green Foxtail

AbstractTolpyralate is a new 4-hydroxyphenyl-pyruvate dioxygenase (HPPD)-inhibiting herbicide for POST weed management in corn; however, there is limited information regarding its efficacy. Six field studies were conducted in Ontario, Canada, over 3 yr (2015 to 2017) to determine the biologically effective dose of tolpyralate for the control of eight annual weed species. Tolpyralate was applied POST at six doses from 3.75 to 120 g ai ha−1and tank mixed at a 1:33.3 ratio with atrazine at six doses from 125 to 4,000 g ha−1. Regression analysis was performed to determine the effective dose (ED) of tolpyralate, and tolpyralate+atrazine, required to achieve 50%, 80%, or 90% control of eight weed species at 1, 2, 4, and 8 wk after application (WAA). The ED of tolpyralate for 90% control (ED90) of velvetleaf, common lambsquarters, common ragweed, redroot pigweed or Powell amaranth, and green foxtail at 8 WAA was ≤15.5 g ha−1; however, tolpyralate alone did not provide 90% control of wild mustard, barnyardgrass, or ladysthumb at 8 WAA at any dose evaluated in this study. In contrast, the ED90for all species in this study with tolpyralate+atrazine was ≤13.1+436 g ha−1, indicating that tolpyralate+atrazine can be highly efficacious at low field doses.

Herbicide Combinations for Postemergent Weed Control in Safflower (Carthamus tinctorius)

1990 ◽  
Vol 4 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Robert E. Blackshaw ◽  
Douglas A. Derksen ◽  
H.-Henning Muendel
Keyword(s):  
Weed Control ◽  
Field Studies ◽  
Carthamus Tinctorius ◽  
Quality Data ◽  
Wild Oat ◽  
Common Lambsquarters ◽  
Wild Mustard ◽  
Yield And Quality ◽  
Green Foxtail ◽  
Field Control

Greenhouse and field studies were conducted to examine the interaction of sethoxydim or fluazifop-P tank mixed with chlorsulfuron or thiameturon for selective weed control in safflower. Under greenhouse conditions, the addition of chlorsulfuron to sethoxydim or fluazifop-P slightly improved the control of green foxtail above that achieved with either herbicide alone. Control of wild oat and wild mustard was similar with the tank mixes and each herbicide alone. In the field, control of wild oat with sethoxydim or fluazifop-P was not altered by adding chlorsulfuron or thiameturon in tank mixes. Similarly, control of common lambsquarters and wild mustard with chlorsulfuron or thiameturon was not affected by adding either sethoxydim or fluazifop-P in tank mixes. Plant height, date of flowering, seed yield, and quality data indicated that safflower tolerated these herbicides applied alone or in combination. Sethoxydim or fluazifop-P tank mixed with chlorsulfuron or thiameturon provide a postemergent alternative for selective control of grass and broadleaf weeds in safflower.

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