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Influence of Tillage Frequency and Nitrogen Fertilizer Rates on Growth, Yield and Essential Oil Content of Spearmint (Mentha spicata L.) in Wondo Genet District, Ethiopia

Received: 15 April 2022    Accepted: 18 May 2022    Published: 31 May 2022
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Abstract

A field experiment was conducted at the research site of Wondo Genet Agricultural Research Center, Southern Ethiopia, in 2017/18 cropping season to assess the effect of tillage frequency and nitrogen fertilizer rates on growth, yield and essential oil content of spearmint and to evaluate the economic feasibility of treatments for spearmint production. The treatments were consisted of three tillage frequencies [once at the time of planting; twice (1st ten days before planting and 2nd at the time of planting and thrice (1st twenty days before planting, 2nd ten days before planting and 3rd at the time of planting] and five levels of nitrogen (0, 50, 100, 150 and 200 kg N ha-1). Randomized complete block design in a factorial arrangement with three replications was used. Results showed that main effect of tillage frequency and nitrogen fertilizer rates significantly affected fresh stem weight per hectare (FSWPH) and dry herbage biomass per hectare (DHBPH). The highest (2972.58kg ha-1) FSWPH and highest (2973.58kg ha-1) DHBPH were obtained due to three-time tillage. The 200 kg N ha-1 gave the highest (3022.70 kg ha-1) FSWPH and highest (3023.71kg ha-1) DHBPH of spearmint. Days to flowering, plant height and dry leaf to stem ratio were significantly affected by interaction of tillage frequency and N rates. Three times tillage at 200 kg N ha-1 gave tallest plant (78.97 cm), highest essential oil yield per hectare (57.97 kg ha-1) and delayed days to flowering (94 days) and gave highest (2.67) dry leaf to stem to ratio at 150 kg N ha-1. Fresh leaf to stem ratio and fresh herbage biomass per hectare were significantly affected by interaction of tillage frequency and N rates. The highest (4.40) fresh leaf to stem ratio and the highest (15808.50kg ha-1) fresh herbage biomass per hectare were due to three times tillage at 200 kg N ha-1. The highest (12852.50 kg ha-1) fresh herbage yield per hectare and highest (3113.40 kg ha-1) dry herbage yield per hectare were obtained at three times tillage when 200kg N ha-1 was used. The highest net benefit (8911.79 Birr ha-1) with marginal rate of return (432.01%) was obtained from three times tillage at N fertilizer rate of 100 kg ha-1. Therefore, based on one season study at WGARC it is possible to say that under Wondo Genet and similar areas the highest and economically feasible herb could be produced using three times tillage and 100 kg N ha-1.

Published in Chemical and Biomolecular Engineering (Volume 7, Issue 2)
DOI 10.11648/j.cbe.20220702.11
Page(s) 15-27
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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), 2022. Published by Science Publishing Group

Keywords

Economic Analysis, Essential Oil Yield, Herbage Yield, Nitrogen, Tillage Frequency

References
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    Sulti Amano, Ketema Belete. (2022). Influence of Tillage Frequency and Nitrogen Fertilizer Rates on Growth, Yield and Essential Oil Content of Spearmint (Mentha spicata L.) in Wondo Genet District, Ethiopia. Chemical and Biomolecular Engineering, 7(2), 15-27. https://doi.org/10.11648/j.cbe.20220702.11

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    Sulti Amano; Ketema Belete. Influence of Tillage Frequency and Nitrogen Fertilizer Rates on Growth, Yield and Essential Oil Content of Spearmint (Mentha spicata L.) in Wondo Genet District, Ethiopia. Chem. Biomol. Eng. 2022, 7(2), 15-27. doi: 10.11648/j.cbe.20220702.11

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    Sulti Amano, Ketema Belete. Influence of Tillage Frequency and Nitrogen Fertilizer Rates on Growth, Yield and Essential Oil Content of Spearmint (Mentha spicata L.) in Wondo Genet District, Ethiopia. Chem Biomol Eng. 2022;7(2):15-27. doi: 10.11648/j.cbe.20220702.11

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  • @article{10.11648/j.cbe.20220702.11,
      author = {Sulti Amano and Ketema Belete},
      title = {Influence of Tillage Frequency and Nitrogen Fertilizer Rates on Growth, Yield and Essential Oil Content of Spearmint (Mentha spicata L.) in Wondo Genet District, Ethiopia},
      journal = {Chemical and Biomolecular Engineering},
      volume = {7},
      number = {2},
      pages = {15-27},
      doi = {10.11648/j.cbe.20220702.11},
      url = {https://doi.org/10.11648/j.cbe.20220702.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.cbe.20220702.11},
      abstract = {A field experiment was conducted at the research site of Wondo Genet Agricultural Research Center, Southern Ethiopia, in 2017/18 cropping season to assess the effect of tillage frequency and nitrogen fertilizer rates on growth, yield and essential oil content of spearmint and to evaluate the economic feasibility of treatments for spearmint production. The treatments were consisted of three tillage frequencies [once at the time of planting; twice (1st ten days before planting and 2nd at the time of planting and thrice (1st twenty days before planting, 2nd ten days before planting and 3rd at the time of planting] and five levels of nitrogen (0, 50, 100, 150 and 200 kg N ha-1). Randomized complete block design in a factorial arrangement with three replications was used. Results showed that main effect of tillage frequency and nitrogen fertilizer rates significantly affected fresh stem weight per hectare (FSWPH) and dry herbage biomass per hectare (DHBPH). The highest (2972.58kg ha-1) FSWPH and highest (2973.58kg ha-1) DHBPH were obtained due to three-time tillage. The 200 kg N ha-1 gave the highest (3022.70 kg ha-1) FSWPH and highest (3023.71kg ha-1) DHBPH of spearmint. Days to flowering, plant height and dry leaf to stem ratio were significantly affected by interaction of tillage frequency and N rates. Three times tillage at 200 kg N ha-1 gave tallest plant (78.97 cm), highest essential oil yield per hectare (57.97 kg ha-1) and delayed days to flowering (94 days) and gave highest (2.67) dry leaf to stem to ratio at 150 kg N ha-1. Fresh leaf to stem ratio and fresh herbage biomass per hectare were significantly affected by interaction of tillage frequency and N rates. The highest (4.40) fresh leaf to stem ratio and the highest (15808.50kg ha-1) fresh herbage biomass per hectare were due to three times tillage at 200 kg N ha-1. The highest (12852.50 kg ha-1) fresh herbage yield per hectare and highest (3113.40 kg ha-1) dry herbage yield per hectare were obtained at three times tillage when 200kg N ha-1 was used. The highest net benefit (8911.79 Birr ha-1) with marginal rate of return (432.01%) was obtained from three times tillage at N fertilizer rate of 100 kg ha-1. Therefore, based on one season study at WGARC it is possible to say that under Wondo Genet and similar areas the highest and economically feasible herb could be produced using three times tillage and 100 kg N ha-1.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Influence of Tillage Frequency and Nitrogen Fertilizer Rates on Growth, Yield and Essential Oil Content of Spearmint (Mentha spicata L.) in Wondo Genet District, Ethiopia
    AU  - Sulti Amano
    AU  - Ketema Belete
    Y1  - 2022/05/31
    PY  - 2022
    N1  - https://doi.org/10.11648/j.cbe.20220702.11
    DO  - 10.11648/j.cbe.20220702.11
    T2  - Chemical and Biomolecular Engineering
    JF  - Chemical and Biomolecular Engineering
    JO  - Chemical and Biomolecular Engineering
    SP  - 15
    EP  - 27
    PB  - Science Publishing Group
    SN  - 2578-8884
    UR  - https://doi.org/10.11648/j.cbe.20220702.11
    AB  - A field experiment was conducted at the research site of Wondo Genet Agricultural Research Center, Southern Ethiopia, in 2017/18 cropping season to assess the effect of tillage frequency and nitrogen fertilizer rates on growth, yield and essential oil content of spearmint and to evaluate the economic feasibility of treatments for spearmint production. The treatments were consisted of three tillage frequencies [once at the time of planting; twice (1st ten days before planting and 2nd at the time of planting and thrice (1st twenty days before planting, 2nd ten days before planting and 3rd at the time of planting] and five levels of nitrogen (0, 50, 100, 150 and 200 kg N ha-1). Randomized complete block design in a factorial arrangement with three replications was used. Results showed that main effect of tillage frequency and nitrogen fertilizer rates significantly affected fresh stem weight per hectare (FSWPH) and dry herbage biomass per hectare (DHBPH). The highest (2972.58kg ha-1) FSWPH and highest (2973.58kg ha-1) DHBPH were obtained due to three-time tillage. The 200 kg N ha-1 gave the highest (3022.70 kg ha-1) FSWPH and highest (3023.71kg ha-1) DHBPH of spearmint. Days to flowering, plant height and dry leaf to stem ratio were significantly affected by interaction of tillage frequency and N rates. Three times tillage at 200 kg N ha-1 gave tallest plant (78.97 cm), highest essential oil yield per hectare (57.97 kg ha-1) and delayed days to flowering (94 days) and gave highest (2.67) dry leaf to stem to ratio at 150 kg N ha-1. Fresh leaf to stem ratio and fresh herbage biomass per hectare were significantly affected by interaction of tillage frequency and N rates. The highest (4.40) fresh leaf to stem ratio and the highest (15808.50kg ha-1) fresh herbage biomass per hectare were due to three times tillage at 200 kg N ha-1. The highest (12852.50 kg ha-1) fresh herbage yield per hectare and highest (3113.40 kg ha-1) dry herbage yield per hectare were obtained at three times tillage when 200kg N ha-1 was used. The highest net benefit (8911.79 Birr ha-1) with marginal rate of return (432.01%) was obtained from three times tillage at N fertilizer rate of 100 kg ha-1. Therefore, based on one season study at WGARC it is possible to say that under Wondo Genet and similar areas the highest and economically feasible herb could be produced using three times tillage and 100 kg N ha-1.
    VL  - 7
    IS  - 2
    ER  - 

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Author Information
  • Ethiopian Institute of Agricultural Research, Wondo Genet Agricultural Research Center, Shashemene, Ethiopia

  • School of Plant Science Agronomy Department, Haramaya University College of Agriculture and Environmental Science, Haramaya, Ethiopia

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