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Weed Management Programs in Grain Sorghum ( Sorghum bicolor )

Author

Listed:
  • Taghi Bararpour

    (Delta Research and Extension Center, Mississippi State University, 82 Stoneville Road, Stoneville, MS 38776, USA)

  • Ralph R. Hale

    (Delta Research and Extension Center, Mississippi State University, 82 Stoneville Road, Stoneville, MS 38776, USA)

  • Gurpreet Kaur

    (Delta Research and Extension Center, Mississippi State University, 82 Stoneville Road, Stoneville, MS 38776, USA)

  • Bhupinder Singh

    (Delta Research and Extension Center, Mississippi State University, 82 Stoneville Road, Stoneville, MS 38776, USA)

  • Te-Ming P. Tseng

    (Department of Plant and Soil Sciences, Mississippi State University, 316 Dorman Hall, Mississippi State, MS 39762, USA)

  • Tessie H. Wilkerson

    (Delta Research and Extension Center, Mississippi State University, 82 Stoneville Road, Stoneville, MS 38776, USA)

  • Cammy D. Willett

    (Department of Crop, Soil and Environmental Sciences, University of Arkansas, 1366 W. Altheimer Dr., Fayetteville, AR 72704, USA)

Abstract

A field study was conducted in Arkansas over three years to evaluate various herbicide treatments, including sequential and tank-mix applications for weed control in grain sorghum ( Sorghum bicolor ). The herbicide treatments used were quinclorac, atrazine + dimethenamid-p, S-metolachlor followed by (fb) atrazine + dicamba, dimethenamid-p fb atrazine, S-metolachlor + atrazine fb atrazine, S-metolachlor + mesotrione, and S-metolachlor fb prosulfuron. All herbicide treatments provided excellent (90% to 100%) control of Ipomoea lacunosa, Ipomoea hederacea var. integriuscula , and Sida spinosa by 12 weeks after emergence. Quinclorac and S-metolachlor fb prosulfuron provided the lowest control of Ipomoea lacunosa, Urochloa platyphylla, Amaranthus palmeri , and Ipomoea hederacea var. integriuscula . Weed interference in the non-treated control reduced grain sorghum yield by 50% as compared to the weed-free control. S-metolachlor + mesotrione and S-metolachlor fb prosulfuron reduced sorghum yields by 1009 to 1121 kg ha −1 compared to other herbicide treatments. The five best herbicide treatments in terms of weed control and grain sorghum yield were quinclorac, atrazine + dimethenamid-p, S-metolachlor fb atrazine + dicamba, dimethenamid-p fb atrazine, and the standard treatment of S-metolachlor + atrazine fb atrazine.

Suggested Citation

  • Taghi Bararpour & Ralph R. Hale & Gurpreet Kaur & Bhupinder Singh & Te-Ming P. Tseng & Tessie H. Wilkerson & Cammy D. Willett, 2019. "Weed Management Programs in Grain Sorghum ( Sorghum bicolor )," Agriculture, MDPI, vol. 9(8), pages 1-13, August.
    • Handle: RePEc:gam:jagris:v:9:y:2019:i:8:p:182-:d:258107
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