Water needs for agricultural field crops in Wasit and Muthanna governorates for the period (2011-2021)
Abstract
The water needs of agricultural crops are of great importance in modern geographical studies, especially in the arid and semi-arid regions, as they suffer from scarcity and scarcity in the amount of water resources as a result of climate change and population increase, as the development of the agricultural sector depends on investing in water and determining how to use it to irrigate crops and achieve development. Agricultural, and the water needs of agricultural crops in Wasit and Muthanna Governorates were discussed, and it was shown that there is a discrepancy in the values of water consumption for agricultural crops, as the maximum total water consumption of the wheat crop in Muthanna Governorate in the year (2018) amounted to (744.6 mm), and its maximum monthly consumption was in The month of January was (164.1 mm) and the lowest monthly consumption was in the month of November (61.3 mm). The net irrigation needs were studied and the total net irrigation needs for the wheat crop in Muthanna Governorate reached (658.9 m3/s) in (2014), then this total decreased to (630.7 m3/s) in the year (2018), after which the total began to rise to its maximum rate (711 m3/s) in the year (2021). The total irrigation needs of the agricultural crops in the Wasit and Muthanna governorates were studied, and the maximum total of the total irrigation needs of the wheat crop in Muthanna was reached. In 2013, it amounted to (930 m3/s), then the total began to decline gradually, dropping to (843.9 m3/s) in (2020), and then it began to increase until it reached (947.8 m3/s) in (2021). The study concluded a number of The most important conclusions were that the study area suffers from a large water deficit as a result of the lack of water imports due to the policies of neighboring countries and their exceeding Iraq’s water share, the lack of rainfall and the increase in evaporation, which cast a shadow on the size and quantity of water resources and meeting the needs of agricultural crops in the study area
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