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Effect of Planting Pattern and Weeding Frequency on Weed Infestation, Yield Components and Yield of Cowpea [Vigna unguiculata (L.) WALP.] in Wollo, Northern Ethiopia

Received: 16 January 2017     Accepted: 13 March 2017     Published: 10 July 2017
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Abstract

Weed competition is one of the most important production constraints causing up to 91.6% reduction in potential yield of cowpea. Therefore, an experiment was conducted at Sirinka and at Jari, northern Ethiopia, during the 2014 main cropping season: to evaluate the effect of planting pattern and frequency of weeding on weeds, yield components and yield of cowpea. There were 18 treatments comprising combination of three planting patterns (S1: 60 cm x 10 cm, S2: 45 cm x 15 cm, S3: 45 cm x 10 cm) and six weeding frequencies viz. one hand weeding and hoeing at 2 weeks after crop emergence (WAE), one hand weeding and hoeing at 3 WAE, one hand weeding and hoeing at 4 WAE, two hand weeding and hoeing at 2 and 5 WAE, weed free check, and weedy check. The treatments were arranged in factorial combination in a randomized complete block design with three replications. Results showed significantly lower total weed dry weight at Sirinka than at Jari. The highest weed control efficacy was recorded in two hand weeding and hoeing at 2 and 5 WAE of cowpea at Sirinka. The plants in weedy check plots at Jari attained maximum height which was significantly higher than all the other treatments. Significantly highest number of pods per plant was recorded in weed free check under 60 cm x 10 cm spacing at Jari. Number of seeds per pod was highest in weed free check at 45 cm x 10 cm spacing at Sirinka. The interaction of weeding frequency and location had significant effect on cowpea dry biomass yield. The highest total dry biomass (12413 kg ha-1) was obtained in one hand weeding and hoeing at 4 WAE at Jari while the highest grain yield (4508 kg ha-1) was recorded from complete weed free under 60 cm x 10 cm spacing at Sirinka. The harvest index ranged from 18.2% in weedy check at Jari to 39.1% in weed free check at Sirinka. The results indicated that the use of 60 cm x 10 cm planting pattern in combination with hand weeding and hoeing at 3 WAE at Sirinka and hand weeding and hoeing at 4 WAE at Jari proved to be the most feasible practice.

Published in Agriculture, Forestry and Fisheries (Volume 6, Issue 4)
DOI 10.11648/j.aff.20170604.12
Page(s) 111-122
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Broadleaved, Grain Yield, Weed Control Efficiency, Weed Density, Weed Dry Weight

References
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Cite This Article
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    Getachew Mekonnen, J. J. Sharma, Lisanework Negatu, Tamado Tana. (2017). Effect of Planting Pattern and Weeding Frequency on Weed Infestation, Yield Components and Yield of Cowpea [Vigna unguiculata (L.) WALP.] in Wollo, Northern Ethiopia. Agriculture, Forestry and Fisheries, 6(4), 111-122. https://doi.org/10.11648/j.aff.20170604.12

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    Getachew Mekonnen; J. J. Sharma; Lisanework Negatu; Tamado Tana. Effect of Planting Pattern and Weeding Frequency on Weed Infestation, Yield Components and Yield of Cowpea [Vigna unguiculata (L.) WALP.] in Wollo, Northern Ethiopia. Agric. For. Fish. 2017, 6(4), 111-122. doi: 10.11648/j.aff.20170604.12

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    AMA Style

    Getachew Mekonnen, J. J. Sharma, Lisanework Negatu, Tamado Tana. Effect of Planting Pattern and Weeding Frequency on Weed Infestation, Yield Components and Yield of Cowpea [Vigna unguiculata (L.) WALP.] in Wollo, Northern Ethiopia. Agric For Fish. 2017;6(4):111-122. doi: 10.11648/j.aff.20170604.12

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  • @article{10.11648/j.aff.20170604.12,
      author = {Getachew Mekonnen and J. J. Sharma and Lisanework Negatu and Tamado Tana},
      title = {Effect of Planting Pattern and Weeding Frequency on Weed Infestation, Yield Components and Yield of Cowpea [Vigna unguiculata (L.) WALP.] in Wollo, Northern Ethiopia},
      journal = {Agriculture, Forestry and Fisheries},
      volume = {6},
      number = {4},
      pages = {111-122},
      doi = {10.11648/j.aff.20170604.12},
      url = {https://doi.org/10.11648/j.aff.20170604.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aff.20170604.12},
      abstract = {Weed competition is one of the most important production constraints causing up to 91.6% reduction in potential yield of cowpea. Therefore, an experiment was conducted at Sirinka and at Jari, northern Ethiopia, during the 2014 main cropping season: to evaluate the effect of planting pattern and frequency of weeding on weeds, yield components and yield of cowpea. There were 18 treatments comprising combination of three planting patterns (S1: 60 cm x 10 cm, S2: 45 cm x 15 cm, S3: 45 cm x 10 cm) and six weeding frequencies viz. one hand weeding and hoeing at 2 weeks after crop emergence (WAE), one hand weeding and hoeing at 3 WAE, one hand weeding and hoeing at 4 WAE, two hand weeding and hoeing at 2 and 5 WAE, weed free check, and weedy check. The treatments were arranged in factorial combination in a randomized complete block design with three replications. Results showed significantly lower total weed dry weight at Sirinka than at Jari. The highest weed control efficacy was recorded in two hand weeding and hoeing at 2 and 5 WAE of cowpea at Sirinka. The plants in weedy check plots at Jari attained maximum height which was significantly higher than all the other treatments. Significantly highest number of pods per plant was recorded in weed free check under 60 cm x 10 cm spacing at Jari. Number of seeds per pod was highest in weed free check at 45 cm x 10 cm spacing at Sirinka. The interaction of weeding frequency and location had significant effect on cowpea dry biomass yield. The highest total dry biomass (12413 kg ha-1) was obtained in one hand weeding and hoeing at 4 WAE at Jari while the highest grain yield (4508 kg ha-1) was recorded from complete weed free under 60 cm x 10 cm spacing at Sirinka. The harvest index ranged from 18.2% in weedy check at Jari to 39.1% in weed free check at Sirinka. The results indicated that the use of 60 cm x 10 cm planting pattern in combination with hand weeding and hoeing at 3 WAE at Sirinka and hand weeding and hoeing at 4 WAE at Jari proved to be the most feasible practice.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Effect of Planting Pattern and Weeding Frequency on Weed Infestation, Yield Components and Yield of Cowpea [Vigna unguiculata (L.) WALP.] in Wollo, Northern Ethiopia
    AU  - Getachew Mekonnen
    AU  - J. J. Sharma
    AU  - Lisanework Negatu
    AU  - Tamado Tana
    Y1  - 2017/07/10
    PY  - 2017
    N1  - https://doi.org/10.11648/j.aff.20170604.12
    DO  - 10.11648/j.aff.20170604.12
    T2  - Agriculture, Forestry and Fisheries
    JF  - Agriculture, Forestry and Fisheries
    JO  - Agriculture, Forestry and Fisheries
    SP  - 111
    EP  - 122
    PB  - Science Publishing Group
    SN  - 2328-5648
    UR  - https://doi.org/10.11648/j.aff.20170604.12
    AB  - Weed competition is one of the most important production constraints causing up to 91.6% reduction in potential yield of cowpea. Therefore, an experiment was conducted at Sirinka and at Jari, northern Ethiopia, during the 2014 main cropping season: to evaluate the effect of planting pattern and frequency of weeding on weeds, yield components and yield of cowpea. There were 18 treatments comprising combination of three planting patterns (S1: 60 cm x 10 cm, S2: 45 cm x 15 cm, S3: 45 cm x 10 cm) and six weeding frequencies viz. one hand weeding and hoeing at 2 weeks after crop emergence (WAE), one hand weeding and hoeing at 3 WAE, one hand weeding and hoeing at 4 WAE, two hand weeding and hoeing at 2 and 5 WAE, weed free check, and weedy check. The treatments were arranged in factorial combination in a randomized complete block design with three replications. Results showed significantly lower total weed dry weight at Sirinka than at Jari. The highest weed control efficacy was recorded in two hand weeding and hoeing at 2 and 5 WAE of cowpea at Sirinka. The plants in weedy check plots at Jari attained maximum height which was significantly higher than all the other treatments. Significantly highest number of pods per plant was recorded in weed free check under 60 cm x 10 cm spacing at Jari. Number of seeds per pod was highest in weed free check at 45 cm x 10 cm spacing at Sirinka. The interaction of weeding frequency and location had significant effect on cowpea dry biomass yield. The highest total dry biomass (12413 kg ha-1) was obtained in one hand weeding and hoeing at 4 WAE at Jari while the highest grain yield (4508 kg ha-1) was recorded from complete weed free under 60 cm x 10 cm spacing at Sirinka. The harvest index ranged from 18.2% in weedy check at Jari to 39.1% in weed free check at Sirinka. The results indicated that the use of 60 cm x 10 cm planting pattern in combination with hand weeding and hoeing at 3 WAE at Sirinka and hand weeding and hoeing at 4 WAE at Jari proved to be the most feasible practice.
    VL  - 6
    IS  - 4
    ER  - 

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Author Information
  • College of Agriculture and Natural Resources, Mizan Tepi University, Mizan Teferi, Ethiopia

  • College of Agriculture and Environmental Sciences, Haramaya University, Dire Dawa, Ethiopia

  • College of Agriculture and Environmental Sciences, Haramaya University, Dire Dawa, Ethiopia

  • College of Agriculture and Environmental Sciences, Haramaya University, Dire Dawa, Ethiopia

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