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Effect of Vine Cuttingon Multiplication Ratio and Yield of Three Orange-fleshed Sweetpotato (Ipomoea batatas (L) Lam) Varieties in South Eastern Nigeria

Received: 7 September 2021     Accepted: 4 October 2021     Published: 27 November 2021
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Abstract

A major constraint to sweetpotato production in Nigeria is the lack of clean and sufficient quantities of vine cutting at the time of planting in May or June. Inorder to obtain planting materials, farmers subject sweetpotato to vine harvest at various times but there is dearth of information on the effect of the level or intensity of defoliation on the crop. In this study, the response of three orange-fleshed sweetpotato varieties to cutting regimes in 2014 and 2015 cropping seasons in a tropical ultisol of South eastern Nigeria was evaluated. In each year, the experiment was laid out as 3 x 4 factorial arranged in randomized complete block design with three replications. Treatments comprised all combinations of three orange-fleshed sweetpotato varieties (Umuspo 1, Umuspo 3 and Ex-Igbariam) and four cutting regimes (6, 10 and 14 weeks after planting [WAP], 8 and 12 WAP, 10 and 14 WAP and no-cutting). Cutting regimes did not influence fresh shoot biomass in both year but cutting at 10 and 14 WAP significantly increased multiplication ratio compared to no-cutting or other cutting schedules. Storage root yield was, however, significantly higher with no-cutting than with the 4 weekly cuts, regardless of cutting dates. In all situations, Umuspo 1 produced significantly higher multiplication ratio and higher top and storage root yields than other varieties. Conversely, Umuspo 3 produced higher carotene yield at 10 and 14 WAP cutting compared to other varieties and cutting regimes.

Published in Advances in Applied Physiology (Volume 6, Issue 2)
DOI 10.11648/j.aap.20210602.13
Page(s) 38-42
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), 2021. Published by Science Publishing Group

Keywords

Orange-fleshed Sweetpotato, Vine Cuttings, Multiplication Ratio, Beta-carotene, Yield

References
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  • APA Style

    Inyang Paul, Okpara Dominic Aja, Ankrumah Emmanuel, Ndifon Elias Mjaika, Emeka Chidibere Prince Osuji, et al. (2021). Effect of Vine Cuttingon Multiplication Ratio and Yield of Three Orange-fleshed Sweetpotato (Ipomoea batatas (L) Lam) Varieties in South Eastern Nigeria. Advances in Applied Physiology, 6(2), 38-42. https://doi.org/10.11648/j.aap.20210602.13

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    ACS Style

    Inyang Paul; Okpara Dominic Aja; Ankrumah Emmanuel; Ndifon Elias Mjaika; Emeka Chidibere Prince Osuji, et al. Effect of Vine Cuttingon Multiplication Ratio and Yield of Three Orange-fleshed Sweetpotato (Ipomoea batatas (L) Lam) Varieties in South Eastern Nigeria. Adv. Appl. Physiol. 2021, 6(2), 38-42. doi: 10.11648/j.aap.20210602.13

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    AMA Style

    Inyang Paul, Okpara Dominic Aja, Ankrumah Emmanuel, Ndifon Elias Mjaika, Emeka Chidibere Prince Osuji, et al. Effect of Vine Cuttingon Multiplication Ratio and Yield of Three Orange-fleshed Sweetpotato (Ipomoea batatas (L) Lam) Varieties in South Eastern Nigeria. Adv Appl Physiol. 2021;6(2):38-42. doi: 10.11648/j.aap.20210602.13

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  • @article{10.11648/j.aap.20210602.13,
      author = {Inyang Paul and Okpara Dominic Aja and Ankrumah Emmanuel and Ndifon Elias Mjaika and Emeka Chidibere Prince Osuji and Njoku Jude and Olapeju Phorbee},
      title = {Effect of Vine Cuttingon Multiplication Ratio and Yield of Three Orange-fleshed Sweetpotato (Ipomoea batatas (L) Lam) Varieties in South Eastern Nigeria},
      journal = {Advances in Applied Physiology},
      volume = {6},
      number = {2},
      pages = {38-42},
      doi = {10.11648/j.aap.20210602.13},
      url = {https://doi.org/10.11648/j.aap.20210602.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aap.20210602.13},
      abstract = {A major constraint to sweetpotato production in Nigeria is the lack of clean and sufficient quantities of vine cutting at the time of planting in May or June. Inorder to obtain planting materials, farmers subject sweetpotato to vine harvest at various times but there is dearth of information on the effect of the level or intensity of defoliation on the crop. In this study, the response of three orange-fleshed sweetpotato varieties to cutting regimes in 2014 and 2015 cropping seasons in a tropical ultisol of South eastern Nigeria was evaluated. In each year, the experiment was laid out as 3 x 4 factorial arranged in randomized complete block design with three replications. Treatments comprised all combinations of three orange-fleshed sweetpotato varieties (Umuspo 1, Umuspo 3 and Ex-Igbariam) and four cutting regimes (6, 10 and 14 weeks after planting [WAP], 8 and 12 WAP, 10 and 14 WAP and no-cutting). Cutting regimes did not influence fresh shoot biomass in both year but cutting at 10 and 14 WAP significantly increased multiplication ratio compared to no-cutting or other cutting schedules. Storage root yield was, however, significantly higher with no-cutting than with the 4 weekly cuts, regardless of cutting dates. In all situations, Umuspo 1 produced significantly higher multiplication ratio and higher top and storage root yields than other varieties. Conversely, Umuspo 3 produced higher carotene yield at 10 and 14 WAP cutting compared to other varieties and cutting regimes.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Effect of Vine Cuttingon Multiplication Ratio and Yield of Three Orange-fleshed Sweetpotato (Ipomoea batatas (L) Lam) Varieties in South Eastern Nigeria
    AU  - Inyang Paul
    AU  - Okpara Dominic Aja
    AU  - Ankrumah Emmanuel
    AU  - Ndifon Elias Mjaika
    AU  - Emeka Chidibere Prince Osuji
    AU  - Njoku Jude
    AU  - Olapeju Phorbee
    Y1  - 2021/11/27
    PY  - 2021
    N1  - https://doi.org/10.11648/j.aap.20210602.13
    DO  - 10.11648/j.aap.20210602.13
    T2  - Advances in Applied Physiology
    JF  - Advances in Applied Physiology
    JO  - Advances in Applied Physiology
    SP  - 38
    EP  - 42
    PB  - Science Publishing Group
    SN  - 2471-9714
    UR  - https://doi.org/10.11648/j.aap.20210602.13
    AB  - A major constraint to sweetpotato production in Nigeria is the lack of clean and sufficient quantities of vine cutting at the time of planting in May or June. Inorder to obtain planting materials, farmers subject sweetpotato to vine harvest at various times but there is dearth of information on the effect of the level or intensity of defoliation on the crop. In this study, the response of three orange-fleshed sweetpotato varieties to cutting regimes in 2014 and 2015 cropping seasons in a tropical ultisol of South eastern Nigeria was evaluated. In each year, the experiment was laid out as 3 x 4 factorial arranged in randomized complete block design with three replications. Treatments comprised all combinations of three orange-fleshed sweetpotato varieties (Umuspo 1, Umuspo 3 and Ex-Igbariam) and four cutting regimes (6, 10 and 14 weeks after planting [WAP], 8 and 12 WAP, 10 and 14 WAP and no-cutting). Cutting regimes did not influence fresh shoot biomass in both year but cutting at 10 and 14 WAP significantly increased multiplication ratio compared to no-cutting or other cutting schedules. Storage root yield was, however, significantly higher with no-cutting than with the 4 weekly cuts, regardless of cutting dates. In all situations, Umuspo 1 produced significantly higher multiplication ratio and higher top and storage root yields than other varieties. Conversely, Umuspo 3 produced higher carotene yield at 10 and 14 WAP cutting compared to other varieties and cutting regimes.
    VL  - 6
    IS  - 2
    ER  - 

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Author Information
  • College of Crop and Soil Sciences, Michael Okpara University of Agriculture, Umudike, Nigeria

  • College of Crop and Soil Sciences, Michael Okpara University of Agriculture, Umudike, Nigeria

  • Department of Agriculture, Alex Ekwueme Federal University, Ikwo, Nigeria

  • Department of Agriculture, Alex Ekwueme Federal University, Ikwo, Nigeria

  • Department of Agriculture, Alex Ekwueme Federal University, Ikwo, Nigeria

  • National Root Crops Research Institute, Umudike, Nigeria

  • International Potato Center, Sweetpotato for Health and Wealth Project in Nigeria, Abuja, Nigeria

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