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Jayesh B. Samtani, John B. Masiunas, and James E. Appleby

acetochlor + atrazine or s-metolachlor at the leaf unfolding stage. This article investigates more chloroacetanilide herbicides; determines if atrazine contributes to leaf tatters injury; and compares white and northern red oak injury ( Quercus rubra L

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Amber N. Bates, Gerald M. Henry, and Cynthia B. McKenney

/acre, dithiopyr (Dimension, Dow AgroSciences) at 0.5 lb/acre, s-metolachlor (Pennant Magnum, Syngenta Professional Products) at 1.8 lb/acre, pendimethalin (Pendulum; BASF Specialty Products, Research Triangle Park, NC) at 0.6 lb/acre, and isoxaben + trifluralin

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Isabel Schlegel Werle, Alencar Junior Zanon, Nereu Augusto Streck, Carlos Eduardo Schaedler, Felipe Schmidt Dalla Porta, Geovana Facco Barbieri, André da Rosa Ulguim, and Te Ming Tseng

Agriculture, Livestock and Supply (AGROFIT), 2019]. Still, other herbicides such as flumioxazin, sulfentrazone, and S-metolachlor have been shown to be selective for cassava and can be included in weed management programs ( Biffe et al., 2010 ; Marcos, 2009

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Sanjeev K. Bangarwa, Jason K. Norsworthy, and Edward E. Gbur

( Stall, 2007 ). Thus, it would be beneficial to evaluate other herbicides that may provide effective control of purple nutsedge, yellow nutsedge, and palmer amaranth without injuring bell pepper. S -metolachlor is a chloroacetamide herbicide that has been

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Edgar L. Vinson III, Kaitlyn J. Price, J. Raymond Kessler, Elina D. Coneva, Masuzyo Mwanza, and Matthew D. Price

, Tennessee, Michigan, Washington, and Oregon (Spartan 4F, FMC, 2011), whereas S -metolachlor (Dual Magnum, Syngenta, 2018) has a special local needs label for Michigan and Oregon. S -metolachlor is desirable because of its relatively low price and ability

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Renata L. Solan, Jed B. Colquhoun, Richard A. Rittmeyer, and Daniel J. Heider

cultivation at 15% canopy development ( Tables 2 and 3 ). Weed control was consistently 85% or greater in ‘Russet Burbank’ and ‘Bannock Russet’ with s-metolachlor and metribuzin PRE in-row banded with cultivation at 15% canopy development. Table 2. Between

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Ravneet K. Sandhu, Laura E. Reuss, and Nathan S. Boyd

combination with herbicides applied PRE and POST ( Yu et al., 2019 ). Several PRE herbicides, including sulfentrazone, S-metolachlor, and fomesafen, are registered in tomato and are applied on raised beds under the plastic mulch ( Boyd et al., 2019 ; Mohseni

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Qingren Wang, Waldemar Klassen, Edward A. Evans, Yungcong Li, and Merlyn Codallo

plastic mulch; 3) herbicides/OM: compost applied as an organic mulch, and the herbicides S-metolachlor (Dual Magnum®; Syngenta Crop Protection, Wilmington, DE) and napropamide (Devrinol®; Syngenta Crop Protection) applied in a tank mix to the organic mulch

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S. Alan Walters and Bryan G. Young

several PRE herbicides including clomazone + ethalfluralin, halosulfuron-methyl, and s-metolachlor will provide better weed control in NT compared with many older cucurbit herbicides, the use of effective postemergence herbicides for control of both grass

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Lambert B. McCarty, D. Wayne Porter, Daniel L. Colvin, Donn G. Shilling, and David W. Hall

Greenhouse studies were conducted at the Univ. of Florida to evaluate the effects of preemergence herbicides on St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] rooting. Metolachlor, atrazine, metolachlor + atrazine, isoxahen, pendimethalin, dithiopyr, and oxadiazon were applied to soil columns followed by placement of St. Augustinegrass sod on the treated soil. Root elongation and biomass were measured following application. Plants treated with dithiopyr and pendimethalin had no measurable root elongation and root biomass was severely (>70%) reduced at the study's conclusion (33 days). Root biomass was unaffected following isoxaben and oxadiazon treatments, but oxadiazon applied at 3.4 kg·ha-1 reduced root length by 50%. Atrazine at 2.2 kg·ha-1 and metolachlor + atrazine at 2.2 + 2.2 kg·ha-1, did not reduce root length in one study, while the remaining atrazine and metolachlor + atrazine treatments reduced cumulative root length and total root biomass 20% to 60%. Metolachlor at 2.2 kg·ha-1 reduced St. Augustinegrass root biomass by >70% in one of two studies. St. Augustinegrass root elongation rate was linear or quadratic in response to all treatments. However, the rate of root elongation was similar to the untreated control for plants treated with isoxaben or oxadiazon. Chemical names used: 6-chloro-N-ethyl-N'-(l-methylethyl)-1,3,5-triazine-2,4-diamine(atrazine);S,S-dimethyl2-(difluoromethyl)-4-(2-methylpropyl)-6-(t∼fluoromethyl)-3,5-pyridinecarbothioate (dithiopyr); N-[3-(1-ethyl-1-methylpropyl)-5-isoxazolyl]-2,6-dimethoxybenzamide (isoxaben); 2-chloro-N-(2-ethyl- 6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide (metolachlor); 3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2-(3H)-one (oxadiazon); N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine (pendimethalin).