Sri Umi Lestari, Ricky Indri Hapsari


This study aimed to classify the types of sweet potato based on the ratio of total dry matter of roots to vine (R/V) in order to make the option available in integrating the crop-livestock systems. Seventeen sweet potato cultivars were planted in Randomized Complete Block Design with three replications applied at two locations, Malang and Blitar. Each cultivar planted in plot measures 2.5 m x 5 m in Malang and 3.0 m x 5 m in Blitar, and each consists of four rows with a spacing of 25 cm in rows. All cultivars gave a dose of 250 kg NPK fertilizer (15-15-15)/ha twice, one-third of dose given at planting and the remainder in a month after planting. Plants were harvested at four months after planting. Fresh weight and dry weight of storage root, fresh weight and dry weight of vines, harvest index, and the ratio R/V are determined.  There was different performance of 17 cultivars planted at two locations. Cultivars planted in Malang were classified into four types, namely forage, which consists of three cultivars among 17 cultivars, low dual-purpose (3 cultivars), high dual-purpose (7 cultivars), and low root production (4 cultivars); while cultivars planted in Blitar turned into the forage type.


Keywords: dual-purpose, root/vine ratio, sweet potato

Full Text:



Ahmed, M., R. Nigussie-Dechassa and B. Abebie. 2012. Effect of planting methods and vine harvesting on shoot and tuberous root yields of sweet potato (Ipomoea batatas (L.) Lam.) in the afar region of Ethiopia. Afr. J. Agric. Res. 7 (7): 1129-1141.

An, L.V., B.E. Frankow-Lindberg and J.E. Lindberg. 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 Res. 82 (1): 49-58.

Balittanah. 2005. Instructions technical analysis of soil, plants, fertilizer and water. Indonesian Agency for Agricultural Research and Development. Department of Agriculture. Bogor. (In Indonesian)

Claessens, L., J.J. Stoorvogel and J.M. Antle. 2008. Ex ante assessment of dual-purpose sweet potato in the crop-livestock system of western Kenya: A minimum-data approach. Agricultural Syst. 99 (1): 13-22.

Endah, D.P.A., S. Fatimah and D. Kastono. 2006. The effect of three kinds of organic fertilizers on growth and yield of three varieties of sweet potato.(in Indonesian). Proceedings of the National Seminar of PERAGI. Yogyakarta. p. 314-324

Etela, I. and G.A. Kalio. 2011. Yields components and 48-h rumen dry matter degradation of three sweet potato varieties in n’dama steers as influenced by date of harvesting. J. Agr. Soc. Res. 11 (2): 15-21.

Etela, I., U.I. Oji, G.A. Kalio and G.O. Tona. 2008. Studies on sweet potato forage and dried brewers’ grains as supplements to green panic for bunaji cows. Trop. Grasslands 42: 245-251.

George, M.S., G. Lu and W. Zhou. 2002. Genotypic variation for potassium uptake and utilization efficiency in sweet potato (Ipomoea batatas L.). Field Crops Res. 77 (1): 7-15.

Hartemink, A.E., S. Poloma, M. Maino, K.S. Powell, J. Egenae and J.N. O’Sullivan. 2000. Yield decline of sweet potato in the humid lowlands of Papua New Guinea. Agr. Ecosyst. Environ. 79 (2-3): 259-269.

Kaya, S. and H. Yildirim. 2011. The effect of dried sweet potato (Ipomoea batatas (L.) Lam.) vines on egg yolk color and some egg yield parameters. Int. J. Agric. Biol. 13 (5): 766-770.

Larbi, A., I. Etela, H.N. Nwokocha, U.I. Oji, N.J. Anyanwu, L.D. Gbaraneh, S.C. Anioke, R.O. Balogun and I.R. Muhammad. 2007. Fodder and tuber yields, and fodder quality of sweet potato cultivars at different maturity stages in the West African humid forest and savanna zones. Anim. Feed Sci. Tech. 135 (1-2): 126-138.

León-Velarde, C.U. 1999-2000. Using competing traits to select dual-purpose sweet potato in native germplasm. CIP Program Report 1999-2000. CIP and ILRI. Lima-Peru. p. 289-294.

León-Velarde, C.U., J. Roca, J. Arteaga, L. Quispe and A. Parraga. 1997. Perspectives on sweet potato: dual-purpose varieties. In: Program report 1995-1996. International Potato Center, Lima, Peru. p. 291–294.

Lestari, S.U., R.I. Hapsari and Sutoyo. 2012a. Improving storage root protein content in sweet potato through open-mating pollination. J. Agrivita .34 (3): 225-232.

Lestari, S.U., R.I. Hapsari and R. Djoko. 2012b. Yield evaluation of protein-enriched sweetpotato. (In Indonesian). Buana Sains. 12 (2): 71-78.

Lestari, S.U. and N. Basuki. 2013. Variability iron content in some varieties of sweet potatoes in Indonesia. National Seminar of 3 in 1: Agronomy, Horticulture and Plant Breeding in Faculty of Agriculture, Brawijaya University, 21-22 August 2013. (In Indonesian)

Lestari, S.U. and R.I. Hapsari. 2014. Sweet potato potential as a feed source of livestock. (In Indonesian). National Seminar of PERAGI- University of Sebelas Maret. Solo.

Lu, J., F. Chen, Y. Xu, Y. Wan and D. Liu. 2001. Sweet potato response to potassium. Better Crops Int. 15 (1): 10-12.

Nedunchezhiyan, M., G. Byju and S.K. Jata. 2012. Sweet potato agronomy. Fruit Veg. Cereal Sci. Biotech. 6 (Special Issue 1): 1-10.

Paulus, J.M. 2011. Growth and yield of sweet potatoes in potassium fertilization and natural shading on intercropping system with maize. Agrivigor 10 (3): 260-271. (In Indonesian)

Peters, D. 2008. Assessment of the potential of sweet potato as livestock feed in East Africa: Rwanda, Uganda, and Kenya. A report presented to The International Potato Center (CIP) in Nairobi. pp. 64.

Putra, S. and K. Permadi. 2011. Effect of potassium fertilizer on improvement of sweet potato varieties yield of narutokintoki in wetland. Agrin. 15 (2): 133-142. (In Indonesian)

Saleh, N. and K. Hartojo. 2003. Present status and future research in sweetpotato in Indonesia. In: K.O. Fuglie (Ed.). Progress in potato and sweetpotato research in Indonesia. CIP-ESEAP and IAARD. p. 137-153.

DOI: http://doi.org/10.17503/agrivita.v37i2.493

Copyright (c)