Journal of Plant Sciences

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Determination of Critical Period of Weed-Crop Competition in Rice (Oryza sativa L.) in Bench Maji and Kaffa Zone, South Western Ethiopia

Received: 26 April 2017    Accepted: 04 May 2017    Published: 07 June 2017
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Abstract

Accurate assessment of crop weed interference period is an essential part for planning an effective weed management for cropping systems and, hence, can be considered the first step to design weed control strategy. The experiment was conducted at Guraferda and Gojeb, Southern Ethiopia during the 2016 main cropping season to assess the critical period of weed-crop competition and yield loss in rice. There were 14 treatments comprising: two series i.e. early (weedy up to 10, 20, 30, 40, 50, 60 and 70 days after crop emergence) and late (weed free up to 10, 20, 30, 40, 50, 60 and 70 days after crop emergence) competition periods were compared with two checks namely complete weed free and weedy check. The treatments were arranged in randomized complete block design with three replications for each set. The major weed species competing vigorously with rice were Cyperus assimilis, Setaria pumila, Phalaris paradoxa and Xanthium spinosum. With increasing duration of weed interference, weed dry weight, and the number of days of rice plant required to reach physiological maturity were increased whereas number of tillers per plant, panicle length, thousand seed weight, grain yield, aboveground biomass, and harvest index of the rice crop were reduced. Uncontrolled weed growth significantly reduced rice grain yield by 68% compared to the grain yield obtained from the weed-free check plots. The beginning and the end of critical period of weed crop competition were based on 5 and 10% acceptable yield loss levels, which were determined by fitting logistic and Gompertz equations to relative yield data, representing increasing duration of weed-interference and weed-free periods. In conclusion, the results of the study revealed that, to reduce the loss in the grain yield of rice by more than 10% and higher economic return, it is important to keep the crop weed-free between 30 to 70 days after crop emergence at Guraferda, in Bench Maji Zone and 28 to 47 days after crop emergence at Gojeb in Keffa Zone.

DOI 10.11648/j.jps.20170503.11
Published in Journal of Plant Sciences (Volume 5, Issue 3, June 2017)
Page(s) 90-98
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), 2024. Published by Science Publishing Group

Keywords

Critical Period, Gompertz Equation, Logistic Equation, Rice, Weeds, Yield Loss

References
[1] FAO, 2015. Food and Agriculture Organization at www.fao.org.
[2] MoARD (Ministry of Agriculture and Rural Development), 2016. Animal and Plant Health Regulatory Directorate. Crop Variety Register. Issue. No. 12. Addis Ababa, Ethiopia. 213p.
[3] Mahmoodi, S. and A. Rahimi, 2009. Estimation of critical period for weed control in com in Iran. World Academy Science Engineering and Technology, 49: 67-72
[4] Knezevic, S. Z. Evans, S. P. and Mainz, M. 2003. “Row spacing influences the critical timing for weed removal in soybean (Glycine max),” Weed Technology, vol. 17, no. 4, pp. 666–673.
[5] Zimdahl, R. L., 2004. Weed-Crop Competition: A Review, Blackwell, Oxford, UK, 2nd edition.
[6] Swanton, c. J. and S. F. Weise, 1991. Integrated weed management. The rationale and approach. Weed Technology. 5: 657-663.
[7] Evans, S. P., Knezevic, S. Z., Lindquist, J. L., Shapiro, C. A. and Blankenship, E. E. 2003. “Nitrogen application influences the critical period for weed control in corn,” Weed Science, 51: 3, 408–417.
[8] Uremis, I. Uludag, A. Ulger, A. C. and Cakir, B. 2009. “Determination of critical period for weed control in the second crop corn under Mediterranean conditions,” African Journal of Biotechnology, vol. 8, no. 18, pp. 4475–4480.
[9] Futakuchi, K., 2005. Submergence damage in rice and challenges in expanding the crop’s adaptability to submerged conditions in West and Central Africa. In: Toriyama K, Heong KL, Hardy B, (eds.). Rice is life: scientific perspectives for the 21st century. Proceedings of the World Rice Research Conference held in Tokyo and Tsukuba, Japan, 4-7 Nov. 2004.
[10] Nieto H., J.; Brondo, M. A.; Gonzalez, J. T. 1968. Critical periods of the crop growth cycle for competition from weeds. Pest Articles and News Summaries, 14: 2: 159-166.
[11] Payne, R. W., Harding, S. A., Murray, D. A., Soutar, D. M., Baird, D. B., Glaser, A. I., Welham, S. J., Gilmour, A. R., Thompson, R., Webster, R. 2011. The Guide to GenStat Release 14, Part 2: Statistics. VSN International, Hemel Hempstead, UK.
[12] Gomez, K. A. and A. A. Gomez, 1984. Statistical Procedures for Agricultural Research. 2nd Edition John Willey and Sons, Inc. 680p.
[13] Stat Soft. 2004. STATISTICA Release 7. Produced by US and International Copy Right Law
[14] CIMMYT (International Maize and Wheat Improvement Center), 1988. From Agronomic Data to Farmer Recommendations: An Economics Training Manual. Completely revised edition. Mexico. D. F. ISBN 968-61 27-18-6.
[15] Begum, M. Juraimi, A. S.. Rajan, A. Omar, S. R. S and Azmi M.,. 2008. “Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220),” Plant Protection Quarterly, vol. 23, no. 4, pp. 153–157.
[16] Juraimi, A. S. Mohamad Najib, M. Y. Begum, M. Anuar, A. R. Azmi, M. and Puteh, A., 2009. “Critical period of weed competition in direct seeded rice under saturated and flooded conditions,” Pertanika Journal of Tropical Agricultural Science, 32: 2, 305–316.
[17] Ali, A.. Malik, M. A Rehman, R. M. Sohail, R. and Akram M. M., 2002. “Growth and yield response of wheat to different sowing times and weed competition durations,” Pakistan Journal of Biological Sciences, vol. 3, no. 4, pp. 681–682.
[18] Grundy, A. C. and Mead, A. 2000. Modeling weed emergence as a function of meteorological records. Weed Science 48: 594-603.
[19] Chikoye D., J. Ellis-Jones, C. Riches, and L. Kanyomeka, 2007. Weed management in Africa: experiences, challenges and opportunities. XVI International Plant Protection Congress, 652-653.
[20] Anwar, M. P. Juraimi, A. S. Samedani, B. Puteh, A. and Man A.. 2014. Critical Period of Weed Control in Aerobic Rice. The ScientificWorld Journal doi: 10.1100/2012/603043.
[21] 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
[22] Ahmadi, A., Talarposhti, R. M., Mousavi, S. K. and Mohammadi, H. 2007. Determination of the Critical Period of Weed Control in Dry Bean (Phaseolus vulgaris L.) Using a Thermal Basis. Iranian Journal of Weed Science 3(1 and 2): 21-38.
[23] Mukhtar, A. M. 2012. Critical period of weed interference in irrigated common bean (Phaseolus vulgaris L.) in Dongola area. Journal of Science and Technology 12(3): 1-6.
[24] Zhang, W. Webster, E. P. Lanclos, D. Y. and Geaghan. J. P. 2003. “Effect of weed interference duration and weed-free period on glufosinate-resistant rice (Oryza sativa),” Weed Technology, vol. 17, no. 4, pp. 876–880.
[25] Chauhan B. S. and Johnson. D. E. 2011 “Row spacing and weed control timing affect yield of aerobic rice,” Field Crops Research, vol. 121, no. 2, pp. 226–231.
[26] Amador-Ram´ırez, M. D. 2002. “Critical period of weed control in transplanted chilli pepper,” Weed Research, 42: 3, 203–209.
[27] Johnson, D. E. Wopereis, M. C. S. Mbodj, D. Diallo, S. Powers, S. and Haefele, S. M. 2004. “Timing of weed management and yield losses due to weeds in irrigated rice in the Sahel,” Field Crops Research, vol. 85, no. 1, pp. 31–42.
[28] Norsworthy J. K. and Oliveira, M. J. 2004 “Comparison of the critical period for weed control in wide- and narrow-row corn,” Weed Science, 52: 5, 802–807.
[29] Gupta, P. C. and O’Toole, J. C. 1986. Upland rice: global perspective. pp 267–292. The International Rice Research Institute, Los Banos, Philippines.
Author Information
  • College of Agriculture and Natural Resources, Mizan Tepi University, Mizan Teferi, Ethiopia

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

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

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    Getachew Mekonnen, Mitiku Woldesenbet, Eskinder Yegezu. (2017). Determination of Critical Period of Weed-Crop Competition in Rice (Oryza sativa L.) in Bench Maji and Kaffa Zone, South Western Ethiopia. Journal of Plant Sciences, 5(3), 90-98. https://doi.org/10.11648/j.jps.20170503.11

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    Getachew Mekonnen; Mitiku Woldesenbet; Eskinder Yegezu. Determination of Critical Period of Weed-Crop Competition in Rice (Oryza sativa L.) in Bench Maji and Kaffa Zone, South Western Ethiopia. J. Plant Sci. 2017, 5(3), 90-98. doi: 10.11648/j.jps.20170503.11

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    AMA Style

    Getachew Mekonnen, Mitiku Woldesenbet, Eskinder Yegezu. Determination of Critical Period of Weed-Crop Competition in Rice (Oryza sativa L.) in Bench Maji and Kaffa Zone, South Western Ethiopia. J Plant Sci. 2017;5(3):90-98. doi: 10.11648/j.jps.20170503.11

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  • @article{10.11648/j.jps.20170503.11,
      author = {Getachew Mekonnen and Mitiku Woldesenbet and Eskinder Yegezu},
      title = {Determination of Critical Period of Weed-Crop Competition in Rice (Oryza sativa L.) in Bench Maji and Kaffa Zone, South Western Ethiopia},
      journal = {Journal of Plant Sciences},
      volume = {5},
      number = {3},
      pages = {90-98},
      doi = {10.11648/j.jps.20170503.11},
      url = {https://doi.org/10.11648/j.jps.20170503.11},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.jps.20170503.11},
      abstract = {Accurate assessment of crop weed interference period is an essential part for planning an effective weed management for cropping systems and, hence, can be considered the first step to design weed control strategy. The experiment was conducted at Guraferda and Gojeb, Southern Ethiopia during the 2016 main cropping season to assess the critical period of weed-crop competition and yield loss in rice. There were 14 treatments comprising: two series i.e. early (weedy up to 10, 20, 30, 40, 50, 60 and 70 days after crop emergence) and late (weed free up to 10, 20, 30, 40, 50, 60 and 70 days after crop emergence) competition periods were compared with two checks namely complete weed free and weedy check. The treatments were arranged in randomized complete block design with three replications for each set. The major weed species competing vigorously with rice were Cyperus assimilis, Setaria pumila, Phalaris paradoxa and Xanthium spinosum. With increasing duration of weed interference, weed dry weight, and the number of days of rice plant required to reach physiological maturity were increased whereas number of tillers per plant, panicle length, thousand seed weight, grain yield, aboveground biomass, and harvest index of the rice crop were reduced. Uncontrolled weed growth significantly reduced rice grain yield by 68% compared to the grain yield obtained from the weed-free check plots. The beginning and the end of critical period of weed crop competition were based on 5 and 10% acceptable yield loss levels, which were determined by fitting logistic and Gompertz equations to relative yield data, representing increasing duration of weed-interference and weed-free periods. In conclusion, the results of the study revealed that, to reduce the loss in the grain yield of rice by more than 10% and higher economic return, it is important to keep the crop weed-free between 30 to 70 days after crop emergence at Guraferda, in Bench Maji Zone and 28 to 47 days after crop emergence at Gojeb in Keffa Zone.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Determination of Critical Period of Weed-Crop Competition in Rice (Oryza sativa L.) in Bench Maji and Kaffa Zone, South Western Ethiopia
    AU  - Getachew Mekonnen
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    JF  - Journal of Plant Sciences
    JO  - Journal of Plant Sciences
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    EP  - 98
    PB  - Science Publishing Group
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    UR  - https://doi.org/10.11648/j.jps.20170503.11
    AB  - Accurate assessment of crop weed interference period is an essential part for planning an effective weed management for cropping systems and, hence, can be considered the first step to design weed control strategy. The experiment was conducted at Guraferda and Gojeb, Southern Ethiopia during the 2016 main cropping season to assess the critical period of weed-crop competition and yield loss in rice. There were 14 treatments comprising: two series i.e. early (weedy up to 10, 20, 30, 40, 50, 60 and 70 days after crop emergence) and late (weed free up to 10, 20, 30, 40, 50, 60 and 70 days after crop emergence) competition periods were compared with two checks namely complete weed free and weedy check. The treatments were arranged in randomized complete block design with three replications for each set. The major weed species competing vigorously with rice were Cyperus assimilis, Setaria pumila, Phalaris paradoxa and Xanthium spinosum. With increasing duration of weed interference, weed dry weight, and the number of days of rice plant required to reach physiological maturity were increased whereas number of tillers per plant, panicle length, thousand seed weight, grain yield, aboveground biomass, and harvest index of the rice crop were reduced. Uncontrolled weed growth significantly reduced rice grain yield by 68% compared to the grain yield obtained from the weed-free check plots. The beginning and the end of critical period of weed crop competition were based on 5 and 10% acceptable yield loss levels, which were determined by fitting logistic and Gompertz equations to relative yield data, representing increasing duration of weed-interference and weed-free periods. In conclusion, the results of the study revealed that, to reduce the loss in the grain yield of rice by more than 10% and higher economic return, it is important to keep the crop weed-free between 30 to 70 days after crop emergence at Guraferda, in Bench Maji Zone and 28 to 47 days after crop emergence at Gojeb in Keffa Zone.
    VL  - 5
    IS  - 3
    ER  - 

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