International Journal of Academic Information Systems Research (IJAISR) ISSN: 2000-002X Vol. 3 Issue 5, May – 2019, Pages: 26-31 www.ijeais.org/ijaisr 26 A Water Management Software Tool for Estimating Water Requirements under Current and Climate Change Conditions Abdrabbo, M. A. A. 1 , Rasha El-Morshedy 1 and Eid S. F. M. 2 1 On Farm Irrigation Research Dept., Agricultural Engineering Research Institute, Agricultural Research Center, Egypt (AEnRI), P. O. Box 256, Cairo, Dokki – Giza – Egypt. 2 Central Laboratory for Agricultural Climate (CLAC), Agricultural Research Center, Egypt 6, Dr. Michiel Bakoum St., El Dokki, Giza, Egypt, 12411 Abstract: The aim of this work is to develop a software program that is capable of predicting water irrigation requirements in the field based on climatic data, soil data and crop data. The software program (called Water Management software (WMS) for different field and horticulture crops.) The software can auto update based on the inputs information such as, climate data, soil analysis and crop coefficient. The developed software can be used by researchers, farmers and irrigation system designers. In order to verify the outputs produced from the software, a field experiment data were gathered for this purpose during 2010/11 and 2011/12 for irrigation management of wheat under four irrigation levels (60, 80 , 100 and 120 % of evapotranspiration (ET). The irrigation water requirement of WM was the same like 100% of ET. The results of wheat productivity and water productivity was higher under 100% of ET than the other irrigation water treatments. Moreover, prediction of irrigation water requirement of wheat under climate change conditions (2050s) showed that the evapotranspiration under 2050s will be higher than current condition by different values ranged by 4 – 12 % under the different climate change scenarios. The highest increasing percentage of “evatpotraspration” was predicted under RCP 8.5 scenario followed by RCP 6.0 scenario while the lowest increasing percentage of ET was predicted under RCP 2.6 scenario. This paper recommended developing a new software for water management considering climate change conditions to provide accurate information for decision makers related to water status in Egypt under climate change particularly for the major strategic crops. 1. INTRODUCTION Agriculture is the major consumer of water in Egypt, accounting for about 80 to 85% of the total net demand in the country. Because of Egypt’s arid climate, nearly all agriculture depends on irrigation water (Karajeh, 2011). Growing land and water scarcity are the two main structural challenges to Egypt’s sustainable agricultural development. Egyptian agricultural production is almost entirely dependent on irrigation, and irrigation mostly depends on a single source, the river Nile. In addition, the amount of arable land available in the country is almost fixed, with limited capacity to expand it. Hence, the Egyptian government strategy has focused on the sustainable use of existing agricultural land, reclaiming desert areas, and increasing productivity through improved irrigation and cultivation methods. The government could also consider devoting scarce land area to grow crops higher in economic value but lower in water use, which would then increase exports and foreign exchange available for staple imports (this option is feasible depending on additional conditions, such as availability of markets, harmonization of safety and quality standards, etc.) (Tellioglu & Konandreas, 2017). Egypt faces the water scarcity with the fact that its share in the Nile waters is predetermined. Also, its water-use efficiency is low, due to high water losses. Water conveyance efficiency is estimated at 70%, and the mean efficiency of field irrigation systems is estimated at only 50%. Hence, one of the main components of the agricultural development strategy is to achieve a gradual improvement of the efficiency of irrigation systems to reach 80% in an area of 8 m feddans, and to reduce the areas planted to rice from 1.673 m feddans (2007) to 1.3 m feddans by (2030) in order to save an estimated 12.4 billion cubic meters of water (MALR, 2009). The increases in the consumption of water for domestic use, industry, and tourism will undoubtedly affect agriculture. In order to overcome this difficulty, agriculture has to come up with innovative ideas with respect to both cropping and irrigation systems. Although water is not treated as an economic commodity in Egypt, the country has to use water according to its value rather than its price. Crops are, therefore, cultivated according to their market value rather than local needs and consumption (Karajeh, 2011). Management of irrigation is one of the most important aspects of cultivation production. Farmers do not have the required information to minimize water usage without reducing plant productivity, Optimize the basic irrigation water usage requires an expert to support farmers by the exact necessary water at exact time to irrigate their crops. Those experts are hard to get when farmers need their help. Also, it isn't common to establish a communication channel with them in most of Egypt villages. That required using the available information and communication technology to develop systems that manage water usage which will help in enhancing the irrigation water usage efficiency in most of the Egyptian villages. Expert systems technology can be used to transfer knowledge from irrigation experts to both agricultural engineers/officers and