African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6638

Full Length Research Paper

Effect of flowering slips on the yield of sweet potato (Ipomoea batata (L.) Lam.) tubers

Yoshihiro Okada
  • Yoshihiro Okada
  • Division of Agro-Environment Research, Tropical Crop Protection Group, NARO Kyushu Okinawa Agricultural Research Center, Itoman, Okinawa 901-0336, Japan.
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Masateru Madanbashi
  • Masateru Madanbashi
  • Division of Agro-Environment Research, Tropical Crop Protection Group, NARO Kyushu Okinawa Agricultural Research Center, Itoman, Okinawa 901-0336, Japan.
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Nittaya Nokham
  • Nittaya Nokham
  • Highland Research and Development Institute, 65 Suthep Road, Muang, Chiang Mai 50200, Thailand.
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Achara Pawasut
  • Achara Pawasut
  • Highland Research and Development Institute, 65 Suthep Road, Muang, Chiang Mai 50200, Thailand.
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Pedcharada Yusuk
  • Pedcharada Yusuk
  • Highland Research and Development Institute, 65 Suthep Road, Muang, Chiang Mai 50200, Thailand.
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  •  Received: 15 April 2019
  •  Accepted: 25 June 2019
  •  Published: 31 October 2019

Abstract

Creating a nursery for sweet potato cultivation in tropical and subtropical areas including Okinawa is not necessary because planting is possible throughout the year. In general, sweet potato blooms under natural conditions in tropical and subtropical areas. Sweet potatoes are grown from non-flowering slips, which farmers generally select from a field of a previous cropping. Although the selection and collection of non-flowering slips are very time-consuming, the effect on yield when flowering slips are used is unknown. This study sought to investigate the effect of flowering on sweet potato yield. The results revealed no significant difference in yield between flowering and non-flowering slips. This can significantly reduce the preparation time of slips, shorten the working time of the farmers and is useful for sweet potato cultivation in tropical and subtropical areas.

Key words: Convolvulaceae, sweet potato cultivation, weevil damage.