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W. James Grichar

Publications (17)

Application of Preemergence and Postemergence Herbicides for Controlling Henbit (Lamium amplexicaule L.) in the Upper Coastal Area of Texas

W. James Grichar & Travis W. Janak · Journal of Experimental Agriculture International · 2026

Background and Aims: Timely fall herbicide applications are an important management strategy for winter annual weeds, balancing erosion control benefits with the need to optimize spring planting conditions and early crop growth. Studies were conducted to evaluate herbicide progra...

Open access Research Article 10.9734/jeai/2026/v48i34110

Controlling Weeds in Peanut (Arachis hypogaea L.) with Carfentrazone Plus Pyroxasulfone Premix Herbicide Systems

W. James Grichar & Emi Kimura · Journal of Experimental Agriculture International · 2026

Background: Since peanut fields are often treated with fungicides during the growing season to control stem rot disease (caused by Sclerotium rolfsii Sacc.) and early and late leaf spot disease [caused by Cercospora arachidicola Hori) and Cercosporidium personatum (Berk. & M....

Open access Research Article 10.9734/jeai/2026/v48i24043

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

Sesame (Sesamum indicum L.) Response to Soil Additives Applied in-Furrow at Planting

W. James Grichar · Journal of Experimental Agriculture International · 2024

Aims: Studies were conducted to study the response of sesame to soil additives applied in-furrow.   Study Design:  Randomized complete block with 4 replications. Place and Duration of Study: Field experiments were carried out during the 2016 through 2018 growing seasons in south-...

Open access Research Article 10.9734/jeai/2024/v46i32326

Control of Peanut (Arachis hypogaea L.) Foliar and Soil-Borne Diseases Using Bixafen Plus Flutriafol

W. James Grichar · Journal of Experimental Agriculture International · 2023

Aim: Evaluate bixafen plus flutriafol when used in various fungicide programs for peanut foliar and soilborne disease control and yield response when using Georgia M-13 and Georgia 09B peanutvarieties.  Study Design: Randomized complete block. Place and Duration of Study: Field s...

Open access Research Article 10.9734/jeai/2023/v45i102224

Using Inpyrfluxam to Control Peanut (Arachis hypogaea L.) Foliar and Soil-Borne Diseases

W. James Grichar & Chris B. Meador · Journal of Experimental Agriculture International · 2023

Aims: To determine peanut disease control and yield response to inpyrfluxam applied at various timings during the growing season. Study Design: Randomized complete block design with 4 reps. Place and Duration of Study: Field studies were conducted from 2016 through 2020 in the so...

Open access Research Article 10.9734/jeai/2023/v45i32109

Will Certain Adjuvants Improve the Preemergence Activity of Pendimethalin or S-metolachlor?

W. James Grichar & Joshua A. McGinty · Journal of Experimental Agriculture International · 2022

Aims: To determine weed efficacy when using adjuvants such as Grounded or Spectrum in combination with pendimethalin or S-metolachlor. Study Design:  Randomized complete-block with 3 replications.  Place and Duration of Study: Field studies were conducted during the 2021 growing...

Open access Research Article 10.9734/jeai/2022/v44i112060

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

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

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 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

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

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

Use of Selected Herbicides and Application Methods for Tolerance to Tifton 85 Bermudagrass [Cynodon dactylon (L.) Pers.]

Travis W. Janak, Paul A. Baumann, Sara E. Janak & W. James Grichar · Journal of Experimental Agriculture International · 2015

Aims: To evaluate forage tolerance of Tifton 85 bermudagrass to selected pasture herbicides using two application methods: broadcast (BRD) and individual plant treatments (IPT). Study Design: A randomized complete block design was employed with four replications. Place and Durati...

Open access Research Article 10.9734/AJEA/2015/17727

Effects of Two Planting Patterns and Plant Densities on the Productivity and Profitability of Cotton

Dan D. Fromme, Lawrence L. Falconer, Roy D. Parker, Robert G. Lemon, Carlos J. Fernandez & W. James Grichar · Journal of Experimental Agriculture International · 2013

Aims: To evaluate the effect of two planting patterns across two plant densities on cotton growth, yield, fiber quality, and net returns. Study Design: Randomized complete block design with a 2 x 2 factorial treatment arrangement with 3 replicates was used for a total of 12 plots...

Open access Research Article 10.9734/AJEA/2014/5222