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Copyright of Alustath is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Water is one of the most important inputs and elements of development, and the importance of water in Egypt is increasing due to the lack of resources and increased demand in recent periods, where rain is scarce and covers most of its deserts. The River Nile is the main water supplier in the Arab Republic of Egypt, where the share of the river about 55.5 billion cubic meters per year, and the problem is limited to the study of the current and future use of water, while Egypt suffers from the constant amount of water available to cover these uses, The high rates of Egyptian population growth, with Egypt's share of water remaining constant, and hence the problem of water shortage, is a threat to the national economy in general and the agricultural sector in particular. The aim of the study is to use water for the time being and to work to increase the efficiency of water use in future years The study shows that the quantities of water used in irrigation for agricultural crops in Aswan fluctuated between the minimum and the decrease, ranging between a minimum of about 40.1 billion m3 in 2012 and a maximum of about 62.1 billion M3 in 2008 with an annual average of about 50.48 billion m3 during the same period. And the study of the equation of the general time trend for the quantities of water used for irrigating agricultural crops in Aswan and it shows that there is no mathematical picture suitable for the nature of the data and that the data revolve around the mean arithmetic.

Water is one of the most important inputs and elements of development, and the importance of water in Egypt is increasing due to the lack of resources and increased demand in recent periods, where rain is scarce and covers most of its deserts. The River Nile is the main water supplier in the Arab Republic of Egypt, where the share of the river about 55.5 billion cubic meters per year, and the problem is limited to the study of the current and future use of water, while Egypt suffers from the constant amount of water available to cover these uses, The high rates of Egyptian population growth, with Egypt's share of water remaining constant, and hence the problem of water shortage, is a threat to the national economy in general and the agricultural sector in particular. The aim of the study is to use water for the time being and to work to increase the efficiency of water use in future years The study shows that the quantities of water used in irrigation for agricultural crops in Aswan fluctuated between the minimum and the decrease, ranging between a minimum of about 40.1 billion m3 in 2012 and a maximum of about 62.1 billion M3 in 2008 with an annual average of about 50.48 billion m3 during the same period. And the study of the equation of the general time trend for the quantities of water used for irrigating agricultural crops in Aswan and it shows that there is no mathematical picture suitable for the nature of the data and that the data revolve around the mean arithmetic. [ABSTRACT FROM AUTHOR]

Copyright of Basic Education College Magazine For Educational & Humanities Sciences is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Agricultural uses vary from year to year and season for another, this depends on many factors which have direct influence or directly in determining the quantities used it. The total annual discharge of the Tigris and Euphrates Rivers and their tributaries and crop composition, one of the most important factors affecting the use of irrigation water in Iraq agriculture, as well as other factors such as cropland area, soil type and climatic conditions, therefore, the research aims to study some indicators of economic efficiency to use irrigation water in production some of the major agricultural crops in Iraq such as wheat, barley, rice, maize, and summer harvest, through economic analysis structure of production costs and revenues for these crops and water unit productivity, and the ratio of total revenue to irrigation costs per crop. The study was based on the use of secondary data through published and unpublished data by Iraq Government agencies such as the Ministry of Agriculture, the Ministry of Irrigation, the Ministry of Planning and Development Cooperation, and the Arab Organization for Agricultural Development, and some scientific thesis. The study was based on analysis of the results using descriptive and quantitative analysis method represented in the arithmetic mean, the scarcity of river water, and indicators of production and economic efficiency of irrigation water use in the production of study crops and the results showed that the amount of water used to irrigate these crops reached about (12326) million m3 accounting for ( 61%) of the total water used in the irrigation of the crop structure in Iraq for the year 20 15and (20 161) million m3 . Wheat came first In terms of cultivated area, which amounted to about (3797.2) thousand dunums, and the amount ofwater amounted to (8138.4) million m3 , barley came second In terms of cultivated area of (941) thousand dunums with a quantity of water amounted to (1836.4) million m3 , The rice crop ranked first in terms of total costs among the study crops at a value of about (300.8) thousand dinars/dunum, and summer harvest ranked second with a value of about (256.4) thousand dinars/dunum, the summer harvest came first in terms of total revenue and net return with a value of about (1378.3), (1122) thousand dinars, respectively, followed by a rice crop with total revenues and net return of about (1120), (819.13) thousand dinars/dunum, respectively. The productivity ofthe water unit for the studied crops (wheat, barley, rice, maize, summer harvest) has reached about (0.315, 0.180, 0.220, 0.160, 0.664) tons/1000 m3 , While the ratio of total revenue to irrigation costs for these crops were (11.8%, 4.7%, 10.2%, 11.2% and 27.6%), respectively. [ABSTRACT FROM AUTHOR]