Indonesia's current potato cultivation areas are mainly in the highlands (1 000 m above sea level – a.s.l.). However, there are obstacles to potato cultivation in the highlands, including erosion, declining land productivity, limited area, and high production costs (i.e. labour wages, fertilisers, and pesticides). This study was aimed at analysing the effects of both an ethanol application and moderate altitudes on the potato production and quality. This study was conducted at the Horticulture Seed Station in the Ulu Ere subdistrict, Bantaeng Regency, South Sulawesi, Indonesia. A split randomised plot design with two factors was used. The main plots were set at two elevation levels: 500 and 700 m a.s.l. The split plots were subjected to the addition of four ethanol concentration levels: 0, 10, 20, and 30%. The results showed that the ethanol application did not significantly affect the potato growth at the moderate elevation, except for the tuber diameter. Moreover, the 20% ethanol concentration produced better results than the 0% ethanol concentration. The application of 10% ethanol at an altitude of 700 m a.s.l. and 30% ethanol at an altitude of 500 m a.s.l. resulted in the best growth and yield among the studied treatments.
Acquaah G. (2012): Principles of Plant Genetics and Breeding. Hoboken: John Wiley & Sons, Ltd.
Camire M.E., Kubow S., Donnelly D.J. (2009): Potatoes and human health. Critical Reviews in Food Science and Nutrition, 49: 823–840. https://doi.org/10.1080/10408390903041996
Guo M., Littlewood J., Joyce J., Murphy R. (2014): The environmental profile of bioethanol produced from current and potential future poplar feedstocks in the EU. Green Chemistry, 16: 4680–4695. https://doi.org/10.1039/C4GC01124D
Hagemann M., Bauwe H. (2017): Photorespiration. In: Thomas B., Murray B.G., Murphy D.J. (eds): Encyclopedia of Applied Plant Sciences. 2nd Ed. Cambridge, Academic Press: 86–89.
Hancock R.D., Morris W.L., Ducreux L.J., Morris J.A., Usman M., Verrall S.R., Fuller J., Simpson C.G., Zhang R., Hedley P.E., Taylor M.A. (2014): Physiological, biochemical and molecular responses of the potato (Solanum tuberosum L.) plant to moderately elevated temperature. Plant, Cell & Environment, 37: 439–450.
Harjadi S.S., Yahya S. (1998): Fisiologi Stress Tanaman. Bogor: PAU IPB (in Indonesian).
Kim Y.U., Lee B.W. (2019): Differential mechanisms of potato yield loss induced by high day and night temperatures during tuber initiation and bulking: Photosynthesis and tuber growth. Frontiers in Plant Science, 10: 300. https://doi.org/10.3389/fpls.2019.00300
Kolachevskaya O.O., Lomin S.N., Arkhipov D.V., Romanov G.A. (2019): Auxins in potato: Molecular aspects and emerging roles in tuber formation and stress resistance. Plant Cell Reports, 38: 681–698. https://doi.org/10.1007/s00299-019-02395-0
Martins J.D.L., Soratto R.P., Fernandes A.M., Dias P.H.M. (2018): Phosphorus fertilization and soil texture affect potato yield. Revista Caatinga, 31: 541–550. https://doi.org/10.1590/1983-21252018v31n302rc
Muhibuddin A., Razak Z., Salam S., Boling J. (2016): Development of potato plants as the results of aeroponic technology by treating of methanol in plain medium at Ulu Ere subdistrict, Bantaeng Regency, South Sulawesi, Indonesia. International Journal of Current Research and Academic Review, 4: 140–148. https://doi.org/10.20546/ijcrar.2016.409.013
Muhibuddin A., Salam S., Razak Z., Boling J. (2017): The yield response and quality of potato as aeroponics technology results towards methanol and Gliricidia sepium leaf extract in medium plain. Advances in Environmental Biology, 11: 1–9.
Muhibuddin A., Razak Z., Salam S., Syamsia, Boling J. (2018): Nutrients formulation for improving production and quality of potato minitubers using aeroponic system in Indonesia. Advances in Environmental Biology, 12: 38–42.
Ruan C.J., Shao H.B., Teixeira da Silva J.A. (2012): A critical review on the improvement of photosynthetic carbon assimilation in C3 plants using genetic engineering. Critical Reviews in Biotechnology, 32: 1–21. https://doi.org/10.3109/07388551.2010.533119
Rykaczewska K. (2013): The impact of high temperature during growing season on potato cultivars with different response to environmental stresses. American Journal of Plant Sciences, 4: 2386–2393. https://doi.org/10.4236/ajps.2013.412295
Rykaczewska K. (2015): The effect of high temperature occurring in subsequent stages of plant development on potato yield and tuber physiological defects. American Journal of Potato Research, 92: 339–349. https://doi.org/10.1007/s12230-015-9436-x
Saravia D., Farfán-Vignolo E.R., Gutiérrez R., Gutierrez R., De Mendiburu F., Schafleitner R., Bonierbale M., Khan M.A. (2016): Yield and physiological response of potatoes indicate different strategies to cope with drought stress and nitrogen fertilization. American Journal of Potato Research, 93: 288–295. https://doi.org/10.1007/s12230-016-9505-9
Stark J.C., Love S.L. (2003): Potato Production Systems. Moscow: University of Idaho.
Suharjo U.K.J., Catur H. (2010): Performance of gamma-irradiated potato cv. Atlantic and granola grown under medium elevation (600 m a.s.l.) in Bengkulu. Akta Agrosia, 13: 82–88.
Tadesse T. (2018): Extraction and characterization of ethanol obtained from potato in Tepi Town local market. Open Access Journal of Chemistry, 2: 17–24.
Taiz L., Zeiger E., Møller I.M., Murphy A. (2018): Fundamentals of Plant Physiology. Oxford: Oxford University Press.
Zakaria B. (2010): Stimulants CO2 on Photosynthesis and Plant Stress. Makassar: Kretakufa Print.
Zhao P., Shao M.A., Omran W., Amer A.M. (2011): Effects of erosion and deposition on particle size distribution of deposited farmland soils on the chinese loess plateau. Revista Brasileira de Ciência do Solo, 35: 2135–2144. https://doi.org/10.1590/S0100-06832011000600028