The Soybean oil is used directly in food and preventing Blood pressure, also Arteriosclerosis. It also contains lot of the essential vitamins for the body, it was started is use in Egypt from the year 1976, it is also a basic source of protein in the poultry and animal feed. The study showed the decrease of the cultivated area with Soya bean with an annual rate statistically signified reached about 2.3 thousand feddan and the stabilization of the feddanic productivity of the yield around the average that reached about 1.216 ton during the period of study (1990-2008), also the cost of production statistically signified reached about 75.8 Pound in the time, the net feddanic revenue increased by an annual rate statistically signified reached about 76.1 pound per feddan which is not representing a buckle to the farmers to cultivate this crop. By studying the production of Maize in Egypt as the essential crop that is competitive for the Soybean crop, it occurred that the decreasing of the cultivated area by Maize in an annual rate not statistically signified reached about 1.046 thousand feddan and decreasing of the feddanic productivity with an annual rate statistically signified reached about 0.285 Ardab/per feddan. Also, the increase of each production costs, farm Price and net revenue of feddan of Maize with an annual rate statistically signified reached about 122.6, 8.9, 138 pound sequently during the period of study. The study showed that the most important variables that affect the cultivated area in Egypt of Soybean are the production costs, farm price and the net revenue for each of Soybean and Maize. The study recommended achieving the projects and policies that lead to increase the cultivated area of Soybean, as the increase of the feddanic productivity, raising the farm price and using the areas that is not cultivated by Rice in cultivating the Soybean instead of maize.
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