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The experimental study was for the field trials of yield response and soil nutrient change of sweet potato varieties to different fertilization treatment conducted at the highland agricultural development station under the royal initiative, Ban Pa Kha, Kamphaeng Phet, Thailand. The objectives of this research are to compare yield weight and soil nutrient change of sweet potato under different fertilizer uses. Trials were planted in 4 months by using two species of sweet potato (A) sweet potato cultivars Okinawan (Ipomoea batatas var. batatas), and (B) Native sweet potato (Ipomoea batatas L. Lam.). The result show that yield of sweet potato (A) was significantly lower than that sweet potato (B). The maximum yield weight was sweet potato (B) in plot 3 (0.96 Kg/Tree), using 150 kg of compost fertilizer and the yield weight of sweet potato (A) show the lowest yield weight in the plot 4 (0.27 Kg/Tree), which was the control plot with natural condition. The chemical fertilizer formula (N13-P13-K21) used in the sweet potato cultivation by Hmong hill tribe farmers were lower quantity of K and P, while the amount of N in such formula used was suitable to the growing needs. However, the studies have also shown that sweet potato is unsuitable for upstream cultivation due to their high uptake of soil nutrients., which could cause soil deterioration.
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Uwah, D.F. Undie, U.L. John, N.M. and Ukoha, G.O. 2013. Growth and yield response of improved sweet potato (Ipomoea batatas (L.) Lam) varieties to different rates of potassium fertilizer in Calabar, Nigeria. Journal of agricultural Science. 5(7): 61.
Duan, G. et al., 2018. Europe was a hub for the global spread of potato virus S in the 19th century. Virology, 525: 200-204.
Troncoso, E. and Pedreschi, F., 2009. Modeling water loss and oil uptake during vacuum frying of pre-treated potato slices. LWT - Food Science and Technology, 42(6): 1164-1173.
Fernandes, A.M. et al., 2020. Nutrient uptake and removal by sweet potato fertilized with green manure and nitrogen on sandy soil. Revista Brasileira de Ciência do Solo, 44.
Ila’ava, V.P. Asher, C.J. and Blarney, F.P.C. 1995. Growth of sweet potato (Ipomoea batatas L.) as affected by pH in solution culture. Plant-Soil Interactions at Low pH: Principles and Management, 627-630.
Haliru, M., Dikko, A., Audu, M. and Aliyu, I. 2015. Effect of Cow Dung on Soil Properties and Performance of Sweet Potato (Ipomoea batatas L.) in Sudan Savanna, Nigeria. International Journal of Plant & Soil Science, 5(4): 212-216.
Liu, Z., Chen, X., Jing, Y., Li, Q., Zhang, J., and Huang, Q. 2014. Effects of biochar amendment on rapeseed and sweet potato yields and water stable aggregate in upland red soil. Catena, 123: 45-51.
Agbede, T. M. 2010. Tillage and fertilizer effects on some soil properties, leaf nutrient concentrations, growth and sweet potato yield on an Alfisol in southwestern Nigeria. Soil and Tillage Research, 110(1): 25-32.
Nye, p. H. and Greenland, d. J. 1961. The Soil under Shifting Cultivation. Soil Science, 92(5): 354.
Pramojanee, P. Hastings, P. Liengsakul, M. and Engakul, V. 1986. The Holocene transgression in Peninsular Thailand. Bulletin of the Geological Society of Malaysia, 19: 551-564.
Assessment of Soil Biological Activity. 2007. Soil Sampling and Methods of Analysis, 557-576.
Pruksakorn, S., Popradit, A. 2018. Comparison of soil composition between farmlands and conserved area. Eurasian Journal of Analytical Chemistry. 13(3): 468-78.
Bremner, J.M. and Mulvaney, C.S. 2015. Nitrogen-Total. Methods of Soil Analysis. 595-624.
Murphy, J. and Riley, J.P. 1962. A modified single solution method for the determination of phosphate in natural waters. Analytica Chimica Acta, 27: 31-36.
Harris, J.E. 1940. A modified silver cobaltinitrite method for potassium determination. Journal of Biological Chemistry, 136(3): 619-627.
Uwah, D. F. Undie, U. L. John, N. M. and Ukoha, G. O. 2013. Growth and Yield Response of Improved Sweet Potato (Ipomoea batatas (L.) Lam) Varieties to Different Rates of Potassium Fertilizer in Calabar, Nigeria. Journal of Agricultural Science, 5(7): 61.
Fernandes, A. M. Assunção, N. S., Ribeiro, N. P. Gazola, B. and Silva, R. M. da. 2020. Nutrient uptake and removal by sweet potato fertilized with green manure and nitrogen on sandy soil.
Saif El-Deen, U. Ezzat, A. and El-Morsy, A. 2011. Effect of phosphorus fertilizer rates and application methods of Humic acid on productivity and quality of sweet potato. Journal of Plant Production, 2(1): 53-66.
Dumbuya, G. Sarkodie-Addo, J. Daramy, M. A. and Jalloh, M. 2016. Growth and yield response of sweet potato to different tillage methods and phosphorus fertilizer rates in Ghana. Journal of Experimental Biology and Agricultural Sciences, 4(5): 475-483.