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<p>Sweet potato is a promising crop due to its short vegetative cycle, high biological efficiency, and the utility of its residues as feed. This study assessed the forage yield and nutritive value of nine dual-purpose sweet potato vine varieties with associated root yield over two main cropping seasons (2023/24-2024/25) at Haro Sabu conditions of Western Oromia. The experiment was arranged in a randomized complete block design with three replications. Data on agronomic traits, yield and nutritional quality were collected and analyzed using SAS. The experiment result showed significant variation (<i>p</i> &lt; 0.05) among varieties for all measured parameters. Agronomically, Kabode and Alamura produced the most vines and branches, while Burtukane and Tola produced the lowest. Varieties with more nodes ( Adu, Kabode) had shorter internodes. Burtukane variety had the highest root number and weight, while Kabode and Tola had the greatest root length and diameter, respectively. Regarding yields, the Adu variety achieved the highest dry matter yield (9.37 t/ha) but the lowest root yield, a result of producing a higher number of smaller roots. In contrast, Berkume yielded the highest marketable and total root yields (12.96 and 14.49 t/ha, respectively). All varieties showed favorable nutritive value, characterized by better crude protein and lower fiber fractions. Consequently, Adu and Hawasa-83 are recommended specifically for forage, while Berkume and Hawasa-09 are suitable for dual-purpose of forage and root production, and could be demonstrated in the study area and similar agro ecologies. Further research on harvesting stages and animal feeding trials is needed.</p>

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Evaluation of dry matter yield and nutritional value of sweet potato (Ipomoea batatas Lam) vines with associated root yields at Haro Sabu Agricultural Research Center, Western Oromia

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  • 发表日期：

    2026年3月19日

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  • Yerosan Wekgari,
  • Fikre Dereba,
  • Shedad Sultan

摘要

Sweet potato is a promising crop due to its short vegetative cycle, high biological efficiency, and the utility of its residues as feed. This study assessed the forage yield and nutritive value of nine dual-purpose sweet potato vine varieties with associated root yield over two main cropping seasons (2023/24-2024/25) at Haro Sabu conditions of Western Oromia. The experiment was arranged in a randomized complete block design with three replications. Data on agronomic traits, yield and nutritional quality were collected and analyzed using SAS. The experiment result showed significant variation (p < 0.05) among varieties for all measured parameters. Agronomically, Kabode and Alamura produced the most vines and branches, while Burtukane and Tola produced the lowest. Varieties with more nodes ( Adu, Kabode) had shorter internodes. Burtukane variety had the highest root number and weight, while Kabode and Tola had the greatest root length and diameter, respectively. Regarding yields, the Adu variety achieved the highest dry matter yield (9.37 t/ha) but the lowest root yield, a result of producing a higher number of smaller roots. In contrast, Berkume yielded the highest marketable and total root yields (12.96 and 14.49 t/ha, respectively). All varieties showed favorable nutritive value, characterized by better crude protein and lower fiber fractions. Consequently, Adu and Hawasa-83 are recommended specifically for forage, while Berkume and Hawasa-09 are suitable for dual-purpose of forage and root production, and could be demonstrated in the study area and similar agro ecologies. Further research on harvesting stages and animal feeding trials is needed.