Influence of Harvest Stage on Yield and Yield Components of Orange Fleshed Sweet Potato [Ipomoea batatas (L) Lam] at Adami Tullu, Central Rift Valley of Ethiopia

Kedir Jaleto, Ambecha Olika (PhD), Tewodros Mulualem (PhD)

Department of Horticulture, Ethiopian Institute of Agricultural Research, Kulumsa Agricultural Research Center, Asella, Ethiopia

Department of Plant Science, Dambi Dollo University, College of Agriculture and Veterinary Medicine, Dambi Dollo, Ethiopia

Departement of Horticulture, Ethiopian Institute of Agricultural Research, Jimma Agricultural Research Center, Jimma, Ethiopia

Accepted 5 April 2021

Citation: Kedir Jaleto, Ambecha Olika, Tewodros Mulualem (2021). Influence of Harvest Stage on Yield and Yield Components of Orange Fleshed Sweet Potato [Ipomoea batatas (L) Lam] at Adami Tullu, Central Rift Valley of Ethiopia, 8(2): 1055-1068.

 

Copyright: © 2021: Kedir et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

A field experiment was conducted at Adami Tullu Agricultural Research Center in 2018 under rainfed condition with supplementary irrigation to determine the influence of harvest stage on vine yield and tuberous root yield of orange fleshed sweet potato varieties. The experiment consisted of four harvest stages (105, 120, 135 and 150 days after planting) and Kulfo, Tulla and Guntute varieties. A 4 X 3 factorial experiment arranged in randomized complete block design with three replications was used. Interaction of harvest stage and variety significantly influenced above ground fresh biomass, vine length, marketable tuberous root weight per hectare, commercial harvest index and harvest index. The highest mean values of above ground fresh biomass (66.12 t/ha) and marketable tuberous root weight (56.39 t/ha) were produced by Guntute variety harvested at 135 days after planting. Based on the results, it can be recommended that, farmers of the study area can grow Guntute variety by harvesting at 135 days after planting to obtain optimum vine and tuberous root yields.

Keywords: harvest stage, leaf number, tuberous root, varieties, vine yield

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