Response of Yellow Nutsedge and Soybeans to Bentazon, Glyphosate, and Perfluidone

Weed Science ◽  
1975 ◽  
Vol 23 (3) ◽  
pp. 215-221 ◽  
Author(s):  
E. W. Stoller ◽  
L. M. Wax ◽  
R. L. Matthiesen
Keyword(s):  
Glycine Max ◽  
Field Experiments ◽  
Foliar Application ◽  
Cyperus Esculentus ◽  
Leaf Stage ◽  
Yellow Nutsedge ◽  
Foliar Sprays ◽  
Good Coverage

Laboratory, greenhouse, and field experiments were conducted in 1972 and 1973 on the efficacy of controlling yellow nutsedge (Cyperus esculentusL.) in soybeans [Glycine max(L.) Merr.] with bentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-(4)3H-one 2,2-dioxide], glyphosate [N-(phosphonomethyl)glycine], and perfluidone [1,1,1-trifluoro-N-[2-methyl-4-(phenylsulfonyl)phenyl] methanesulfonamide]. Young nutsedge plants (four- to six-leaf stage) were more susceptible to foliar sprays of the three herbicides than were older (six- to eight-leaf stage) plants. Foliar application of bentazon resulted in slow acropetal translocation of the herbicide, but killed the parent tubers. Good coverage of the foliage by bentazon sprays is essential, because the bentazon frequently kills only the foliage contacted by the spray. Applied as a postemergence broadcast spray, glyphosate injured soybeans severely at rates higher than 0.3 kg/ha, but did not satisfactorily control yellow nutsedge at rates less than 2.2 kg/ha. Perfluidone was active on yellow nutsedge when applied to either soil or foliage; yellow nutsedge was controlled best with preplant incorporated treatments at 4.5 kg/ha. Applications of 4.5 kg/ha perfluidone in the field significantly injured soybeans and reduced yields.

Efficacy of Halauxifen-Methyl on Glyphosate-Resistant Horseweed (Erigeron canadensis)

Weed Science ◽  
2018 ◽  
Vol 66 (6) ◽  
pp. 758-763 ◽  
Author(s):  
Cara L. McCauley ◽  
William G. Johnson ◽  
Bryan G. Young
Keyword(s):  
Zea Mays ◽  
Glycine Max ◽  
Field Experiments ◽  
Foliar Application ◽  
Management Systems ◽  
Herbicide Resistant ◽  
Synthetic Auxin ◽  
Comparable Level ◽  
Erigeron Canadensis ◽  
Application Rates

AbstractHalauxifen-methyl is a new synthetic auxin herbicide for control of broadleaf weeds, including preplant applications for corn (Zea maysL.) or soybean [Glycine max(L.) Merr.]. The objective of this study was to investigate the efficacy of halauxifen-methyl in comparison to the current auxin standards, 2,4-D and dicamba, on glyphosate-resistant (GR) horseweed (Erigeron canadensisL.) at different plant heights. In field experiments, a foliar application of halauxifen-methyl at the recommended use rate of 5 g ae ha−1resulted in 81% control. Dicamba applied at 280 g ae ha−1provided a comparable level of efficacy of 80%, while 2,4-D at 560 g ae ha−1resulted in 49% control. The addition of glyphosate improved GRE. canadensiscontrol with 2,4-D more than with halauxifen-methyl or dicamba, possibly due to the higher level of control observed with halauxifen-methyl or dicamba alone. Even though applied at 50 to 100 times lower application rates, the efficacy of halauxifen-methyl onE. canadensiswas similar to dicamba and greater than 2,4-D. Thus, halauxifen-methyl should be an effective tool for management of GRE. canadensisbefore planting both conventional and herbicide-resistant soybean varieties, and it precludes the extended preplant application interval required for dicamba in some soybean management systems.

Comparison of Six Cropping Systems for Yellow Nutsedge (Cyperus esculentus) Control

Weed Science ◽  
1983 ◽  
Vol 31 (1) ◽  
pp. 63-67 ◽  
Author(s):  
P. E. Keeley ◽  
R. J. Thullen ◽  
J. H. Miller ◽  
C. H. Carter
Keyword(s):  
Solanum Tuberosum ◽  
Glycine Max ◽  
Hordeum Vulgare ◽  
Control Systems ◽  
Weed Control ◽  
Cropping Systems ◽  
Cyperus Esculentus ◽  
Similar Reduction ◽  
Yellow Nutsedge ◽  
Double Cropping

Six cropping/weed control systems were evaluated from 1978 to 1980 for the control of yellow nutsedge (Cyperus esculentusL.). Supplementing cultivation of cotton (Gossypium hirsutumL. ‘Acala SJ-2′) with either preplant applications of fluridone {1 - methyl - 3 - phenyl - 5 - [3 - (trifluoromethyl)phenyl] -4(1H-pyridinone} or two hoeings for 2 yr preceding cotton treated with DSMA (disodium methanearsonate) and MSMA (monosodium methanearsonate) reduced populations of viable yellow nutsedge tubers 98 to 99% within 3 yr. Dry- or wet - fallowing plus tillage after barley (Hordeum vulgareL. ‘Kombyne’), and double cropping potatoes (Solanum tuberosumL. ‘White Rose’) treated with EPTC (S-ethyl dipropylthiocarbamate) with soybeans [Glycine max(L.) Merr. ‘Williams’] treated with alachlor [2-chloro - 2′, 6’ - diethyl -N- (methoxymethyl)acetanilide] for 2 yr preceding cotton, reduced populations of tubers 98 to 99% within 3 yr. A similar reduction of tubers (97%) was obtained by double cropping potatoes with milo [Sorghum bicolor(L.) Moench. ‘NK- 265′] for 2 yr preceding cotton.

Yellow Nutsedge and Cotton Response to Several Herbicides

Weed Science ◽  
1973 ◽  
Vol 21 (4) ◽  
pp. 327-329 ◽  
Author(s):  
P. E. Keeley ◽  
C. H. Carter ◽  
J. H. Miller
Keyword(s):  
Gossypium Hirsutum ◽  
Field Experiments ◽  
Cyperus Esculentus ◽  
Yellow Nutsedge

Seven herbicides were evaluated for the control of yellow nutsedge (Cyperus esculentusL.) in cotton (Gossypium hirsutumL. ‘Acala SJ-1’) in three field experiments during 1970 and 1971. The herbicides, 2-chloro-2′,6′-diethyl-N-(methoxymethyl) acetanilide (alachlor); 2-chloro-2′,6′-diethyl-N-(butoxymethyl) acetanilide (CP-53619); 2,4-bis(isopropylamino)-6-methylthio)-s-triazine (prometryne); 2-(α-naphthoxy)-N, N-diethylpropionamide (R-7465);S-isopropyl 5-ethyl-2-methylpiperidine-1-carbothioate (R-12001); 4-chloro-5-(dimethylamino)-2-(α,α,α-trifluoro-m-tolyl)-3-(2H)-pyridazinone (San-6706); and 2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidine-3,5-dione (methazole), were applied broadcast and incorporated 10 cm deep into the soil before the preplanting irrigation. All herbicides controlled nutsedge for at least 1 month in two or more experiments. Cotton was most tolerant to applications of 2.24 and 4.48 kg/ha of CP-53619, 3.36 and 6.72 kg/ha of prometryne, 1.12 kg/ha of San-6706, and 2.24 kg/ha of methazole. Higher rates of San-6706 and methazole and all rates of alachlor, R-7465, and R-12001 reduced the yield of cotton in one or more experiments.

Control of Yellow Nutsedge (Cyperus esculentus) and Smooth Pigweed (Amaranthus hybridus) in Summer Squash with Halosulfuron

2008 ◽  
Vol 22 (4) ◽  
pp. 660-665 ◽  
Author(s):  
Brian W. Trader ◽  
Henry P. Wilson ◽  
Thomas E. Hines
Keyword(s):  
Field Study ◽  
Field Experiments ◽  
Cyperus Esculentus ◽  
Weed Species ◽  
Amaranthus Hybridus ◽  
Yellow Nutsedge ◽  
Application Method ◽  
Summer Squash ◽  
Smooth Pigweed

Field experiments were conducted in 1999, 2000, and 2001 to investigate PRE and POST applications of halosulfuron-methyl in combination with clomazone plus ethalfluralin for control of sedge and smooth pigweed in summer squash. Halosulfuron was applied PRE or POST to summer squash at 9, 18, or 27 g ai/ha in combination with a PRE application of clomazone at 175 g ai/ha plus ethalfluralin at 630 g ai/ha. Smooth pigweed control by addition of halosulfuron at 18 and 27 g/ha in combination with clomazone plus ethalfluralin PRE was greater than 89% independent of application method. Yellow nutsedge control was greater than 83% with POST applications of halosulfuron at 18 and 27 g/ha in combination with clomazone plus ethalfluralin PRE. Yellow nutsedge control was greater than 60% from all POST halosulfuron applications at 9, 18, or 27 g/ha in the greenhouse. In a separate field study without ethalfluralin PRE, rice flatsedge control was more than 85% from halosulfuron applied POST at 18 and 27 g/ha. Yellow summer squash and zucchini squash were injured as much as 52 and 47%, respectively, from inclusion of halosulfuron PRE or POST at 27 g/ha in treatments. Summer squash yields were generally not affected by halosulfuron rate, and were comparable to or higher than summer squash treated by only the mixture of clomazone plus ethalfluralin. In these studies, summer squash were injured by halosulfuron applied at 9 to 27 g/ha PRE or POST, yet rapidly recovered, making this herbicide acceptable for use in combination with clomazone and ethalfluralin for controlling several common weed species.

Yellow Nutsedge (Cyperus esculentus) Control, Regrowth, and Tuber Production as Affected by Herbicides

Weed Science ◽  
1983 ◽  
Vol 31 (3) ◽  
pp. 419-422 ◽  
Author(s):  
Philip A. Banks
Keyword(s):  
Glycine Max ◽  
Gossypium Hirsutum ◽  
Cyperus Esculentus ◽  
Treated Soil ◽  
Yellow Nutsedge ◽  
Tuber Production

Nine soil-applied herbicides were evaluated in the field in cotton (Gossypium hirsutumL.) and soybeans [Glycine max(L.) Merr.] and in the greenhouse without crops to determine their effects on the control, regrowth, and tuber production of yellow nutsedge (Cyperus esculentusL.). Fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl) phenyl]-4(1H)-pyridinone} and norflurazon [4-chloro-5-(methylamino)-2-(α,α,α-trifluoro-m-tolyl)-3(2H)-pyridazinone] provided the best (100%) control in the greenhouse. Tubers exposed to herbicide-treated soil in the greenhouse for 4 or 8 weeks produced fewer new tubers when transplanted into nontreated soil than nontreated tubers did. Yellow nutsedge shoot and tuber populations in the field were significantly reduced by all herbicides, except for alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide], after 2 yr of treatment in cotton and soybeans.

Strategies for increased yellow nutsedge (Cyperus esculentus) control in turfgrass with halosulfuron, sulfentrazone and physical removal

2021 ◽  
pp. 1-23
Author(s):  
Luqi Li ◽  
Matthew Sousek ◽  
Zachary Reicher ◽  
Roch Gaussoin
Keyword(s):  
Cultural Practices ◽  
Dry Mass ◽  
Cyperus Esculentus ◽  
Fresh Weight ◽  
Herbicide Application ◽  
Leaf Stage ◽  
Yellow Nutsedge ◽  
Greenhouse Study ◽  
Tuber Fresh Weight ◽  
Carry Over

Abstract Yellow nutsedge is one of the most widely distributed and troublesome weeds in the world. Field and greenhouse studies were conducted to optimize strategies for increased yellow nutsedge control in turfgrass with halosulfuron and sulfentrazone. In the field study in yellow nutsedge and perennial ryegrass mixture, single or sequential applications (three weeks after initial) of halosulfuron or sulfentrazone were made on June 3, June 23, July 15, or August 5 in 2013, 2014, 2015, and 2016. Percent yellow nutsedge control was rated within the same growing season on Sept 17 and the following year on June 3 for carry-over control. Field and greenhouse studies confirm that sequential applications of halosulfuron with a three-week interval resulted in > 95% control in a yellow nutsedge/turfgrass mixture. In a greenhouse study, both herbicides reduced yellow nutsedge root and rhizome dry mass from 39 to 98%, number of new tubers and tuber fresh weight from 38 to 100% and prevented re-emergence. Sequential applications of either herbicide within a three-week interval early post emergence is recommended for optimal control. Herbicide application to yellow nutsedge using halosulfuron and sulfentrazone should be made as early as possible postemergence, preferably at the three- to five-leaf stage or 200 to 250 growing degree days (GDD, 10 C base). Mowing can be an effective method to reduce yellow nutsedge growth. Mowing at 7.6 cm weekly reduced yellow nutsedge rhizome dry mass by 55% and number of new tubers formed by 63% in the greenhouse study. Physical removal of yellow nutsedge plants such as hand-pulling can be an effective method to manage yellow nutsedge and is most effective at the three- to five-leaf stage (200 to 250 GDD). End-users can maximize yellow nutsedge control by integrating early herbicide treatments and cultural practices such as mowing and hand-pulling.

Absorption, Translocation, and Toxicity of Foliar-Applied Imazaquin in Yellow and Purple Nutsedge (Cyperus esculentusandC. rotundus)

Weed Science ◽  
1988 ◽  
Vol 36 (3) ◽  
pp. 313-317 ◽  
Author(s):  
Ujjanagouda B. Nandihalli ◽  
Leo E. Bendixen
Keyword(s):  
Shoot Growth ◽  
Cyperus Esculentus ◽  
Main Shoot ◽  
Purple Nutsedge ◽  
Leaf Stage ◽  
Acid Absorption ◽  
Yellow Nutsedge ◽  
Treated Area ◽  
Foliar Treatment ◽  
Quinolinecarboxylic Acid

Imazaquin {2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acid} absorption, translocation, and toxicity were investigated in yellow nutsedge (Cyperus esculentusL. # CYPES) and purple nutsedge (C. rotundusL. # CYPRO) after foliar treatment. Imazaquin rates from 0.125 to 0.375 kg ai/ha were sprayed on nutsedge plants at the four-leaf stage. Compared to untreated plants, these rates reduced the main shoot growth of yellow nutsedge by 70 to 86% and that of purple nutsedge by 80 to 92% at 28 days after application (DAA). However, the regrowth as measured by tiller production was significantly greater at 0.125 and 0.188 kg/ha rates than at higher rates. The plants treated with 0.313 and 0.375 rates had no rhizomes or tubers at the 28 DAA sampling. In yellow nutsedge, absorption of14C-imazaquin increased from 36% at 1 DAA to 57% at 8 DAA. of the total absorbed14C, 12% translocated from the treated area by 8 DAA. Roots and rhizomes accumulated equal amounts of radioactivity. In purple nutsedge, the absorption of imazaquin increased from 17% at 1 DAA to 53% at 8 DAA. Translocation of absorbed14C in purple nutsedge at 8 DAA was 21%. Rhizomes accumulated significantly greater amounts of14C than the roots.

Yellow Nutsedge Control in Soybeans

Weed Science ◽  
1972 ◽  
Vol 20 (2) ◽  
pp. 194-201 ◽  
Author(s):  
L. M. Wax ◽  
E. W. Stoller ◽  
F. W. Slife ◽  
R. N. Andersen
Keyword(s):  
Glycine Max ◽  
Soil Surface ◽  
Silty Clay ◽  
Cyperus Esculentus ◽  
Clay Loam ◽  
Silty Clay Loam ◽  
Late Planting ◽  
Yellow Nutsedge ◽  
Selective Control ◽  
Margin Of Safety

A system for controlling yellow nutsedge(Cyperus esculentusL.) in soybeans [Glycine max(L.) Merr.] which involved preplanting tillage, late planting, herbicides, and cultivation was evaluated in 1969 and 1970. In Illinois on a Drummer silty clay loam,S-ethyl dipropylthiocarbamate (EPTC) andS-ethyl diisobutylthiocarbamate (butylate), incorporated in the soil before planting, gave good and fair control of yellow nutsedge, respectively, but both injured soybeans initially.S-propyl dipropylthiocarbamate (vernolate), also incorporated before planting, controlled yellow nutsedge as well as EPTC did, and resulted in less injury to soybeans. Soybean yields were not reduced by any of the thiocarbamate treatments. Incorporation of 2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide (alachlor) or 2-chloro-N-isopropylacetanilide (propachlor), just before planting, controlled at least 90% of the yellow nutsedge in both years, whereas preemergence applications were only moderately successful and dependent on rainfall. In field microplots, alachlor and vernolate provided only fair control of yellow nutsedge when applied to the soil surface, but they both controlled 95% of the yellow nutsedge when incorporated 7.6 cm. In greenhouse studies on selective control of yellow nutsedge in soybeans, alachlor exhibited a wider margin of safety to soybeans than did vernolate.

Some Factors Influencing Atrazine Activity on Yellow Nutsedge(Cyperus esculentus)

Weed Science ◽  
1978 ◽  
Vol 26 (5) ◽  
pp. 421-425 ◽  
Author(s):  
R. K. Nishimoto ◽  
C. P. Yip ◽  
R. D. Sweet
Keyword(s):  
Foliar Application ◽  
Soil Surface ◽  
Effective Field ◽  
Cyperus Esculentus ◽  
Simulated Rainfall ◽  
Mother Tuber ◽  
Yellow Nutsedge ◽  
Primary Roots ◽  
Field Control ◽  
Secondary Roots

Greenhouse studies were conducted to investigate the basis for effective field control of yellow nutsedge(Cyperus esculentusL. var.esculentus)when atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-trizine] was applied late postemergence. Yellow nutsedge responded similarly to atrazine applied preemergence, early postemergence, or late postemergence. Yellow nutsedge growing with or without the presence of the mother tuber responded similarly to atrazine applied early postemergence. Atrazine application to the soil resulted in much greater yellow nutsedge injury than foliar application. The addition of oil enhanced atrazine activity when foliarly applied, but not when soil applied. Simulated rainfall immediately after postemergence applications enhanced yellow nutsedge control more than when simulated rainfall was delayed. The primary roots of yellow nutsedge appeared to be more important than other underground absorbing areas for atrazine uptake in young plants. Plants from tubers originating from lower soil depths produced secondary roots deeper, and these plants were less affected by atrazine applied preemergence than plants originating from tubers closer to the soil surface. A considerable reduction in atrazine activity was obtained when tubers were planted into soil 1 month after atrazine application.

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