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Peter A. Dotray

Publications (14)

Performance of Pyroxasulfone to Control Amaranthus palmeri and Salsola kali in Peanut

Peter A. Dotray, Todd A. Baughman, W. James Grichar & Jason E. Woodward · Journal of Experimental Agriculture International · 2018

Aims: Determine weed efficacy and peanut tolerance to pyroxasulfone in the Texas High Plains peanut growing area.                                                     Study Design: Randomized complete block design with 3 replications.                            Place and Duration...

Open access Research Article 10.9734/JEAI/2018/41505

Sesame (Sesamum indicum L.) Response to Diuron Applied at the 3- and 4- Leaf Pair Stage of Development

W. James Grichar & Peter A. Dotray · Journal of Experimental Agriculture International · 2025

Aims: Studies were conducted to evaluate sesame response to diuron at 1X (1.12 kg ha-1), 2X (2.24 kg ha-1), and 4X (4.48 kg ha-1) the labeled US rate applied at 3- or 4 leaf pair growth stage.  Study Design:  Treatments consisted of a factorial arrangement of three diuron rates (...

Open access Research Article 10.9734/jeai/2025/v47i13202

Managing Palmer Amaranth (Amaranthus palmeri) with Sequential Applications of Glufosinate and 2,4-D

Grace Flusche Ogden & Peter A. Dotray · Journal of Experimental Agriculture International · 2022

Aims: Determine the influence of sequential spray order and role of glufosinate when used in a system with 2,4-D to control Palmer amaranth at two different growth stages. Study Design: Randomized complete block design with three replications. Place and Duration of Study: A fallo...

Open access Research Article 10.9734/jeai/2022/v44i930864

Sesame (Sesamum indicum L.) Response to Combinations of Ethalfluralin Plus S-metolachlor Applied Prior to Planting

W. James Grichar & Peter A. Dotray · Journal of Experimental Agriculture International · 2022

Aims: Determine sesame response to ethalfluralin at 0.63, 0.84, or 1.05 kg ha-1 in combination with S-metolachlor at 1.07 or 1.42 kg ha-1 applied and incorporated prior to planting. Study Design: Randomized complete-block with 3 replications.  Place and Duration of Study: Studies...

Open access Research Article 10.9734/jeai/2022/v44i330803

Carfentrazone Plus Pyroxasulfone Combinations for Weed Control in Peanut (Arachis hypogaea L.)

W. James Grichar, Peter A. Dotray & Todd Baughman · Journal of Experimental Agriculture International · 2021

Aims: To determine peanut response and weed control following the use of carfentrazone plus pyroxasulfone (C + P). Study Design:  Randomized complete block design with 3-4 reps depending on location. Place and Duration of Study: Studies were conducted during the 2015 and 2016 gro...

Open access Research Article 10.9734/jeai/2021/v43i1030747

Using Glufosinate in Sequential Application Systems with Dicamba on Palmer Amaranth

Grace Flusche Ogden & Peter A. Dotray · Journal of Experimental Agriculture International · 2021

Aims: Determine the influence of sequential spray order and role of glufosinate when used in a system with dicamba to control Palmer amaranth at three different growth stages. Study design:  Randomized complete block design with four replications Place and duration of Study: A fa...

Open access Research Article 10.9734/jeai/2021/v43i430666

Efficacy of 2,4-D Choline as Influenced by Weed Size in the Texas High Plains

Misha R. Manuchehri, Peter A. Dotray & J. Wayne Keeling · Journal of Experimental Agriculture International · 2019

Aim: Postemergence timing trials based on weed size were conducted near Lubbock, TX to assess the effectiveness of 2,4-D choline + glyphosate on control of Palmer amaranth (Amaranthus palmeri S. Wats.), Russian-thistle (Salsola tragus L.), and kochia (Kochia scoparia L.) at three...

Open access Research Article 10.9734/jeai/2019/v35i230199

Evaluation of Weed Control Efficacy and Peanut Tolerance to Pyroxasulfone Herbicide in the South Texas Peanut Production Area

W. James Grichar, Peter A. Dotray & Todd A. Baughman · Journal of Experimental Agriculture International · 2018

Aims: Determine weed efficacy and peanut tolerance to pyroxasulfone in the south Texas peanut growing area.                                                     Study Design:  Randomized complete block design with 3 replications.                           Place and Duration of Stu...

Open access Research Article 10.9734/JEAI/2019/45347

Influence of Water Quality and Ammonium Sulfate on Glyphosate Efficacy

Misha R. Manuchehri, Peter A. Dotray, J. Wayne Keeling, T. Shay Morris, Gaylon D. Morgan & Jason E. Woodward · Journal of Experimental Agriculture International · 2018

Aims: The objectives of these studies were to 1) determine west Texas water hardness values, 2) determine if glyphosate efficacy is affected by water carrier source, 3) determine if there is a benefit using reverse osmosis water as the carrier when applying glyphosate, and 4) det...

Open access Research Article 10.9734/JEAI/2018/41723

Influence of Spray Tip and Spray Volume on the Efficacy of Imazapic and Imazethapyr on Selected Weed Species

W. James Grichar & Peter A. Dotray · Journal of Experimental Agriculture International · 2015

Aims: To evaluate control of weeds commonly found in peanut fields when using imazapic or imazethapyr applied post emergence with different spray tips and at different spray volumes. Study Design: Experimental design was a randomized complete block with three replications and a s...

Open access Research Article 10.9734/AJEA/2015/17209

Sesame Tolerance to Herbicides Applied Postemergence-Directed

W. James Grichar, Peter A. Dotray & D. Ray Langham · Journal of Experimental Agriculture International · 2013

Aims: Studies were conducted to determine sesame tolerance to herbicides applied postemergence-directed (PDIR) to the lower 5 and 15 cm of the stem. Study Design:  Randomized complete block design with a 14 (herbicide) x 2 (spray height) factorial arrangement with 3 replicates. P...

Open access Research Article 10.9734/AJEA/2014/6644

Sesame (Sesamum indicum L.) Response to Delayed Applications of Preemergence Herbicides Applied 3 or 6 Day after Emergence

W. James Grichar, Jack J. Rose, Peter A. Dotray, Joyce A. Tredaway, Muthukumar Bagavathiannan, Mark W. Shankle & D. Ray Langham · Journal of Experimental Agriculture International · 2021

Aims: Field studies were conducted to determine sesame response to the pre-emergence herbicides (acetochlor at 1.7 kg ai ha-1; S-metolachlor at 0.72, 1.43, and 2.86 kg ai ha-1; dimethenamid-P at 0.84 kg ai ha-1; pethoxamid at 0.22 kg ai ha-1; pyroxasulfone at 0.09 kg ai ha-1and b...

Open access Research Article 10.9734/jeai/2021/v43i130630

Herbicide Formulation, Spray Nozzle Design, and Operating Pressure Affects the Droplet Size Spectra of Agricultural Sprays

Joshua A. McGinty, Gaylon D. Morgan, Peter A. Dotray & Paul A. Baumann · Journal of Experimental Agriculture International · 2019

Aims: Determine the droplet size spectra of agricultural sprays as affected by herbicide formulations, spray nozzle designs, and operating pressures. Place and Duration of Study: This study was conducted in April 2014 at the United States Department of Agriculture Agricultural Re...

Open access Research Article 10.9734/jeai/2019/v38i330304

Weed Control and Peanut Tolerance Using Pyroxasulfone in Oklahoma

Todd A. Baughman, W. James Grichar & Peter A. Dotray · Journal of Experimental Agriculture International · 2018

Aims: To determine the spectrum of weed control and peanut tolerance with pyroxasulfone in Oklahoma.    Study Design:  Randomized complete block design with four replications. Place and Duration of Study: Oklahoma State University Caddo Research Station near Ft. Cobb (35.091º N,...

Open access Research Article 10.9734/JEAI/2018/39881