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East Nusa Tenggara Province, known as a dry area in Indonesia with sub optimal soil and uncertain climate. Although sorghum (Sorghum bicolor) is known to be suitable plant in this area, the sub optimal soil and the long period of dry season often become constraint for the cultivation. Sorghums still need enough water during their period of life. Research conducted in the green house and in the field in Cibinong indicated that water deficit will affect the physiological characteristics. To develop sorghums suitable for cultivation in the East Nusa Tenggara Province, simulation of water requirement of two types of sorghums with sub optimum soil was conducted. The simulation of crop factor and soil factor resulted that grain sorghum with stages and total life period of 130 days (vegetative, reproductive, maturity and harvesting stage) needs a total of 371 mm of water, and number to irrigate was 5 multiplicated by 58 mm. While sweet sorghum with stages and total life period of 140 days needs a total of 479 mm water, and number to irrigate 12 multiplicated by 40 mm. This simulation was very important in order to develop sorghums that can adapt to lacking of water environment by applying some water use efficiency technique.
. Krieg DR. Sorghum. In: Teare ID, Peet MM. Crop Water Relations. A Wiley-Interscience Publication. John Wiley & Son. New York. 1982; 351-388.
. Wani SP, Albrizio R, Vajja NR. Sorghum in: Steduto P, Hsiao TC, Fereres E, Raes D. Crop yield response to water. FAO Irrigation and Drainage paper, No. 66. FAO Rome. 1990; 144-153.
. Martens MP. Grain crops in Indonesia. Sulang Language Data and Working Papers: Topics in Lexicography, No. 9. 2013. Sulawesi Language Alliance http://sulang.org/
. OECD. “Sorghum (Sorghum bicolor)”, in Safety Assessment of Transgenic Organisms in the Environment. 2017; Volume 7: OECD Consensus Documents, OECD Publishing, Paris. DOI: https://doi.org/10.1787/9789264279728-5-en.
. OGTR. The Biology of Sorghum bicolor (L.) Moench subsp. bicolor (Sorghum). Australian Government, Department of Health Office, of The Gene Technology Regulator. Version 1.1: July 2017. OGTR. Web. Page.
. Assefa, Y., Staggenborg, S. A., and Prasad, V. P. V. Grain sorghum water requirement and responses to drought stress: A review. Online. Crop Management. 2010. doi:10.1094/CM-2010-1109-01-RV.
. Kramer PJ. Water Relation of Plant. Academic Press, Inc. Harcout Brace Jovanovich, Publisher, San Diedo. 1983.
. Shenkut A, Tesfaye K, Abegaz F, Hordofa T. Determination of Water Requirement and Crop Coefficient for Sorghum (Sorghum bicolor L.) at Melkassa, Ethiopia. East African Journal of Sciences. 2013; Volume 7 (1); 41-50.
. Doorenbos J, Pruitt WO. Crop Water Requirements. FAO Irrigation and Drainage Paper. No. 24. FAO. Rome. 1984.
. Allen RG, Peeira LS, Raes D, Smith M. Crop Evapotranspiration. FAO Irrigation and Drainage paper, No. 56. FAO Rome. 1990.
. Qassim A, Ashcroft B. Estimating vegetable crop water use with moisture - accounting method. Agriculture Notes. 2016. AG1192. ISSN 1329-8062
. Widiyono W, Rachmat A, Nugroho S, Lestari P, Syarif F. Physiological characteristic of 10 sorghums genotypes under water stress in greenhouse. ISIBIO 2020 IOP Conf. Series: Earth and Environmental Science 762 (2021) 012052 IOP Publishing doi:10.1088/1755-1315/762/1/012052.
. Widiyono W, Nugroho S, Rachmat A, Syarif F, Lestari P, Hidayati N. Drought tolerant screening of 20 Indonesian sorghum genotypes through leaf water potential measurements under water stress. ISIBIO 2019. IOP Conf. Series: Earth and Environmental Science. 2020; IOP Publishing 439, 012033. doi:10.1088/1755-1315/439/1/012033; 1-11.
. Sulistyowati DD, Widiyono W, Nugroho S. Mapping of growth patterns for Physiological effectiveness and water use efficiency of sorghum. Symposium on Biology Education Proceeding, Biology Education Study Program, FKIP, Ahmad Dahlan University.
th August 2019. e-ISSN: 2528-5726; 330-336.
. Turner FT, McCauley GN. Rice In: Teare ID, Peet MM. Crop Water Relations. A Wiley-Interscience Publication. John Wiley & Son. New York. 1982; 307-350.