The Pruning Effect on the Storage Root Yield and Starch Content of Sweet Potato Clones Planted at Dry Land

Edyson Indawan, Sri Umi Lestari, Nurita Thiasari, Pramono Sasongko


Sweet potato is a dual-purpose crop, which could produce both food and feed. The vine pruning prior to storage root harvesting was intended to increase the quantity and quality of fresh forage for animal feed. This study aims to evaluate whether periodic pruning can affect the storage root yield and its starch content. This experiment employed split-plot design with two factors and three replications. The first factor as main plot was vine pruning which consisted of four distinct pruning times (four times, three times, twice and once). The second factor as sub-plot was cultivars which consisted of six dual-purpose cultivars and two controls. The storage root yields, vine yields, starch yields and the reduction in storage root yields were observed. The results showed that the vine pruning decreased the storage root yields, with small increases the vine yields. The percentage of the reduction in storage root yields were 4-58%, while the decrease vine yields are relatively inconsistent. The starch yield of the cultivars with one pruning time were in the range of 2.34-6.67 ton ha-1. On the contrary, the three times pruning or more since 80 days after transplanted can reduce the starch yields for more than 50%. The slight increase in vines yield due to pruning was followed by the decrease in storage root yields and starch content of the sweet potato.


dual-purpose sweet potato; pruning; starch yield; storage root yields; vine yields

Full Text:



Abonyi, F. O., Iyi, E. O., & Machebe, N. S. (2012). Effects of feeding sweet potato (Ipomoea batatas) leaves on growth performance and nutrient digestibility of rabbits. African Journal of Biotechnology, 11(15), 3709–3712. Retrieved from Link

Ahmed, M. (2012). Effect of planting methods and vine harvesting on a shoot and tuberous root yields of sweet potato [Ipomoea batatas (L.) Lam.] in the Afar region of Ethiopia. African Journal of Agricultural Research, 7(7), 1129–1141. Retrieved from Link

Austin, M. E., & Aung, L. H. (1973). Patterns of Dry Matter Distribution During Development of Sweet Potato (Ipomoea batatas). Journal of Horticultural Science, 48(1), 11–17. Crossref

Baba, M., Nasiru, A., Karkarna, I. S., Muhammad, I. R., & Rano, N. B. (2018). Nutritional Evaluation of Sweet Potato Vines from Twelve Cultivars as Feed for Ruminant Animals. Asian Journal of Animal and Veterinary Advances, 13(1), 25–29. Crossref

Bunphan, D., & Anderson, W. F. (2019). Effect of planting pattern and season on some agronomic performances and yield of sweet potato cv. Japanese Orange. Australian Journal of Crop Science, 13(7), 1067–1073. Crossref

Chipungu, F., Changadeya, W., Ambali, A., Saka, J., Mahungu, N., & Mkumbira, J. (2018). Adaptation of sweet potato [Ipomoea batatas (L.) Lam] genotypes in various agro-ecological zones of Malawi. African Journal of Biotechnology, 17(16), 531–540. Crossref

Enyi, B. A. C. (1977). Analysis of tuber yield in sweet potato (Ipomea batatas) cultivars. The Journal of Agricultural Science, 88(2), 421–430. Crossref

Gajanayake, B., & Reddy, K. R. (2016). Sweet potato responses to mid-and late-season soil moisture deficits. Crop Science, 56(4), 1865–1877. Crossref

Gomes, F., Carr, M. K. V., & Squire, G. R. (2005). Effects of water availability and vine harvesting frequency on the productivity of sweet potato in Southern Mozambique. IV. Radiation interception, dry matter production, and partitioning. Experimental Agriculture, 41(1), 93–109. Crossref

Gomez, K. A., & Gomez, A. A. (1984). Statistical procedures for Agricultural Research (Second Eds). New York: John Wiley & Sons. Retrieved from Link

Indawan, E., Lestari, S. U., & Thiasari, N. (2018). Sweet potato response to biochar application on sub-optimal dry land. Journal of Degraded and Mining Lands Management, 5(2), 1133–1139. Crossref

Irungu, R., Migwi, P. K., Kariuki, J. N., & Guliye, A. Y. (2015). Determination of Suitable Harvesting Age of Selected Forage Sweet Potato Cultivars to Achieve High Nutritive Value in Ruminants. The 2015 JKUAT Scientific Conference, 1, 57–66. Retrieved from Link

Jayanti, A., Sunaryo, & Widaryanto, E. (2016). Pengaruh Tingkat Defoliasi pada Pertumbuhan dan Hasil Tiga Varietas Ubi Jalar (Ipomoea batatas L.). Jurnal Produksi Tanaman, 4(7), 503–511. Retrieved from Link

Laurie, R. N., Laurie, S. M., Du Plooy, C. P., Finnie, J. F., & Van Staden, J. (2015). The yield of Drought-Stressed Sweet Potato in Relation to Canopy Cover, Stem Length, and Stomatal Conductance. Journal of Agricultural Science, 7(1), 201–214. Crossref

Lestari, S. U., & Hapsari, R. I. (2015). Dual-Purpose Assessment for Sweet Potato. AGRIVITA, 37(2), 123–129. Crossref

Lestari, S. U., Hamzah, A., & Julianto, R. P. D. (2019). Alteration agronomic traits performance of sweet potato cultivars from drylands to paddy fields. Journal of Degraded and Mining Lands Management, 6(3), 1763–1769. Crossref

Mbithe, M. J., Steven, R., Agili, S., Kivuva, M. B., Kioko, W. F., & Kuria, E. (2016). Proximate Characterization of Selected Ugandan Sweet Potato (Ipomoea batatas L.) Varieties For Food and Feed. Advances in Crop Science and Technology, 4(2), 1–5. Retrieved from Link

Megersa, T., Urge, M., & Nurfeta, A. (2012). Effects of feeding sweet potato (Ipomoea batatas) vines as a supplement on feed intake, growth performance, digestibility and carcass characteristics of Sidama goats fed a basal diet of natural grass hay. Tropical Animal Health and Production, 45(1), 593–601. Crossref

Motsa, N. M., Modi, A. T., & Mabhaudhi, T. (2015a). Influence of agro-ecological production areas on antioxidant activity, reducing sugar content, and selected phytonutrients of orange-fleshed sweet potato cultivars. Food Science and Technology, 35(1), 32–37. Crossref

Motsa, N. M., Modi, A. T., & Mabhaudhi, T. (2015b). Sweet potato response to low-input agriculture and varying environments of KwaZulu-Natal, South Africa: implications for food security strategies. Acta Agriculturae Scandinavica Section B: Soil and Plant Science, 65(4), 329–340. Crossref

Mussoline, W. A., & Wilkie, A. C. (2017). Feed and fuel: the dual-purpose advantage of an industrial sweet potato. Journal of the Science of Food and Agriculture, 97(5), 1567–1575. Crossref

Mwololo, J. K., Mburu, M. W. K., & Muturi, P. W. (2012). Performance of sweet potato varieties across environments in Kenya. International Journal of Agronomy and Agricultural Research, 2(10), 2223–7054. Retrieved from Link

Nanda, B. K., Sahoo, N., & Panigrahi, B. (2019). Assessment of Soil Loss from Agricultural Lands of South Andaman District in Tropical Islands. International Journal of Current Microbiology and Applied Sciences, 8(03), 2190–2198. Crossref

Netsai, N., Moses, M., & Tuarira, M. (2019). Effect of cutting position and vine pruning level on a yield of sweet potato (Ipomoea batatas L.). Journal of Aridland Agriculture, 5, 1–5. Retrieved from Crossref

Niyireba, T. N., Ebong, C., Agili, S., Low, J., Lukuyu, B., Kirui, J., Ndirigwe, J., Uwimana, G., Kakundiye, L., Mutimura, M. Gahakwa, D., & Gachuiri, C. K. (2013). Evaluation of dual-purpose sweet potato [Ipomea batatas (L.) Lam] cultivars for root and fodder production in Eastern Province, Rwanda. Agricultural Journal, 8(5), 242–247. Retrieved from Link

Novianti, D., & Setiawan, A. (2018). Pengaruh Pemangkasan Pucuk dan Jarak Tanam terhadap Pertumbuhan dan Produksi Bibit Ubi Jalar (Ipomoea batatas L.). Buletin Agrohorti, 6(1), 143–153. Crossref

Olorunnisomo, O. A. (2007). Yield and quality of sweet potato forage pruned at different intervals for West African dwarf sheep. Livestock Research for Rural Development, 19(3), 3–8. Retrieved from Link

Oshunsanya, S. O. (2016). Alternative method of reducing soil loss due to harvesting of sweet potato: A case study of low input agriculture in Nigeria. Soil and Tillage Research, 158, 49–56. Crossref

Saitama, A., Nugroho, A., & Widaryanto, E. (2017). Yield response of ten varieties of sweet potato (Ipomoea batatas L.) cultivated on dryland in rainy season. Journal of Degraded and Mining Lands Management, 04(04), 919–926. Crossref

Shumbusha, D., Shimelis, H., Laing, M., & Asiimwe, T. (2017). Phenotypic diversity analysis of sweet potato for breeding dual-purpose varieties. Acta Agriculturae Scandinavica Section B: Soil and Plant Science, 67(4), 340–351. Crossref

Sirait, J., & Simanihuruk, K. (2010). Potensi dan Pemanfaatan Daun Ubikayu dan Ubijalar Sebagai Sumber Pakan Ternak Ruminansia Kecil. Wartazoa, 20(2), 75–84. Retrieved from Link

Sitorus, S., Susanto, B., & Haridjaja, O. (2011). Kriteria dan Klasifikasi Tingkat Degradasi Lahan di Lahan Kering (Studi Kasus : Lahan Kering di Kabupaten Bogor). Jurnal Tanah dan Iklim, 34, 66–83. Retrieved from Link

Suminarti, N. E. (2016). Pengaruh Pemupukan N dan Frekuensi Pemangkasan Tajuk pada Aspek Agronomis dan Hasil Tanaman Ubi Jalar (Ipomoea batatas (L.) Lam.) var. Kretek. Jurnal Agro, 3(2), 8–20. Crossref

Suminarti, N., & Novriani, R. (2017). Pengaruh Defoliasi dan Posisi Penanaman Stek Batang pada Pertumbuhan dan Hasil Tanaman Ubi Jalar (Ipomoea batatas L.) Lam. Var. Sari. Jurnal Biodjati, 2(1), 21–29. Crossref

Van An, L., Frankow-Lindberg, B. E., & Lindberg, J. E. (2003). Effect of harvesting interval and defoliation on yield and chemical composition of leaves, stems, and tubers of sweet potato (Ipomoea batatas L. (Lam.)) plant parts. Field Crops Research, 82(1), 49–58. Retrieved from Crossref

Yu, H. Q., Li, Y., Zhou, N., Chappell, A., Li, X. Y., & Poesen, J. (2016). Soil nutrient loss due to tuber crop harvesting and its environmental impact in the North China Plain. Journal of Integrative Agriculture, 15(7), 1612–1624. Crossref


  • There are currently no refbacks.