African Journal of
Plant Science

  • Abbreviation: Afr. J. Plant Sci.
  • Language: English
  • ISSN: 1996-0824
  • DOI: 10.5897/AJPS
  • Start Year: 2007
  • Published Articles: 687

Full Length Research Paper

Effect of weed control methods on weed density and maize (Zea mays L.) yield in west Shewa Orimia, Ethiopia

Tesfay Amare*
  • Tesfay Amare*
  • Department of Plant Sciences, College of Agriculture and Veterinary Sciences, Ambo University, Ambo, Post Box No.19, Ethiopia.
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Amin Mohammed
  • Amin Mohammed
  • Department of Plant Sciences, College of Agriculture and Veterinary Sciences, Ambo University, Ambo, Post Box No.19, Ethiopia.
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Mulugeta Negeri
  • Mulugeta Negeri
  • Department of Plant Sciences, College of Agriculture and Veterinary Sciences, Ambo University, Ambo, Post Box No.19, Ethiopia.
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Frehiwot Sileshi
  • Frehiwot Sileshi
  • Department of Plant Sciences, College of Agriculture and Veterinary Sciences, Ambo University, Ambo, Post Box No.19, Ethiopia.
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  •  Received: 13 November 2014
  •  Accepted: 25 December 2014
  •  Published: 31 January 2015

Abstract

Field experiments were conducted during 2013-2014 crop seasons at Ambo and Guder to study the effect of weed control methods on weed dynamics in maize (Zea mays L.) variety BH-660 in randomized complete block design with three replications. Five treatments, including Nicosulfuron (Arrow 75 WDG) at 0.09 kg ha-1 + silwet gold (adjuvant) at 0.10%, s-metolachlor 290 + Atrazine (Primagram) at 3.00 kg ha-1, s-metolachlor (dual gold) 1.5 kg ha-1, and hand weeding and weedy check (control) were used. Effect of different herbicides on weed density was significant. The lowest weed density (0.71 and 4.99 m-2) was recorded in plot treated with hand weeding followed by Nicosulfuron at 0.09 kg ha-1 (3.68 and 5.92 m-2) whereas the maximum was recorded in weedy check (14.16 and 24.24 m-2) in Guder and Ambo, respectively. Like density and dry weight of weeds, the minimum was observed in hand weeding and hoeing followed by Nicosulfuron at 0.09 kg ha-1 which is not significantly different from s-metolachlor at 1.50 kg ha-1 and the lowest dry weight of weeds (0.0 and 26.67 gm-2) was recorded in plot treated with hand weeding  followed by Nicosulfuron at 0.90 kg ha-1 (2.13 and 65.60 gm-2), however, non-significant difference existed among them in Guder, whereas the highest was observed in weedy check (170.93, 382.13 gm-2) in Guder and Ambo, respectively. Moreover, those treatments also significantly increased the yield and yield component of maize in both locations.

 

Key words:  Weed, weed control methods, herbicides, maize yield.