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Growth and Yield Response of Cowpea (Vigna unguiculata L. Walp.) to Integrated Use of Planting Pattern and Herbicide Mixtures in Wollo, Northern Ethiopia| Abstract
ISSN: 2329-8863

Advances in Crop Science and Technology
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  • Research Article   
  • Adv Crop Sci Tech 2016, Vol 4(6): 245
  • DOI: 10.4172/2329-8863.1000245

Growth and Yield Response of Cowpea (Vigna unguiculata L. Walp.) to Integrated Use of Planting Pattern and Herbicide Mixtures in Wollo, Northern Ethiopia

Getachew Mekonnen1*, Sharma JJ2, Lisanework Negatu2 and Tamado Tana2
1College of Agriculture and Natural Resources, Mizan-Tepi University, Mizan Teferi, Ethiopia
2College of Agriculture and Environmental Sciences, Haramaya University, Dire Dawa, Ethiopia
*Corresponding Author : Getachew Mekonnen, College of Agriculture and Natural Resources, Mizan-Teoi University, PO Box 260, Mizan Tepi, Ethiopia, Tel: +251912008038, Email: [email protected]

Received Date: Nov 05, 2016 / Accepted Date: Nov 14, 2016 / Published Date: Nov 18, 2016

Abstract

To assess the integrated effect of planting pattern and low dose herbicide mixtures on weeds and growth, yield attributes and yields of cowpea, and to determine the economic feasibility of different weed management practices in cowpea, a field experiment was conducted at Sirinka Agricultural Research Center experimental sites at Jari and Sirinka in Northern Ethiopia during the 2014 main cropping season. There were 16 treatments comprising the combinations of two planting patterns (60 cm × 10 cm, 45 cm × 15 cm) and eight weed management practices (s-metolachlor 2.0 kg ha-1, s-metolachlor at 1.0 kg ha-1+hand weeding and hoeing 35 weeks after crop emergence (WAE), pendimethalin at 1.0 kg ha-1+hand weeding and hoeing 5 WAE, s-metolachlor at 1.0 kg ha-1+pendimethalin at 1.0 kg ha-1, s-metolachlor at 1.0 kg ha-1+pendimethalin at 0.75 kg ha-1, s-metolachlor at 0.75 kg ha-1+pendimethalin at 1.0 kg ha-1, hand weeding and hoeing 3 WAE and weedy check. The treatments were laid out in factorial combination in a randomized complete block design with three replications. The highest number of pods per plant, number of seeds per pod, and hundred seed weight were obtained from the combination of s-metolachlor at 1.0 kg ha-1+hand weeding 5 WAE along with 60 cm × 10 cm at Sirinka. Higher (3092 kg ha-1) grain yield was recorded at Sirinka than at Jari (2714 kg ha-1). The highest (53460 ETB ha-1) gross benefit was obtained from s-metolachlor at 1.0 kg ha-1+hand weeding and hoeing 5 WAE, followed by pendimethalin at 1.0 kg ha-1+hand weeding and hoeing 5 WAE (46737 ETB ha-1). Therefore, managing the weeds with the application of 1.0 kg ha-1 of s- metolachlor+hand weeding and hoeing 5 WAE along with 60 cm × 10 cm proved to be the most feasible practice. Alternate herbicides for the control of X. strumarium infested fields in the study area needs to be explored.

Keywords: Broadleaved and grass weeds; Cowpea; Grain yield; Herbicide mixtures; Integrated management; Pendimethalin; s-metolachlor; Vigna unguiculata; Weed

Citation: Mekonnen G, Sharma JJ, Negatu LW, Tana T (2016) Growth and Yield Response of Cowpea (Vigna unguiculata L. Walp.) to Integrated Use of Planting Pattern and Herbicide Mixtures in Wollo, Northern Ethiopia. Adv Crop Sci Tech 4:245 Doi: 10.4172/2329-8863.1000245

Copyright: © 2016 Mekonnen G, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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