| This research aims to study and estimation of quantities the optimal combinations (labor and capital) used by the farmers of the crop in the province to achieve the volumes of the various production at (break-even point, the volume of production of the sample, the optimal size of production, production volume of the Maximization-profit) and the extent of convergence of these quantities with the quantities volumes actual growers crop, and urged farmers to adopt these quantities and volumes of the study, and through the use of Cobb DoGlas and derivatives economic concluded that the volume of production at break-even point is 1839 kg / don and the amount of work achieved is 5.41 man / day and the capital required for this size is 76,297 dinars, while the actual size of the production sample is 3297 kg / don and the amount of capital achieved by 13.9 man / day and the capital needed for that was 435,538 dinars, and the optimal size of production that minim izing costs amounted to 4005 kg / don and quantity optimum to achieve total 10 man / day and the amount of capital optimization necessary to achieve it was 535,938 dinars, while the production size of the Maximization profit amounted to 3706 kg / don which is less than the size of production optimization because of the lack of response to price levels to expand production, while the quantitative optimization of working that maximize the profit of 19 man / day, and quantitative optimization of capital that maximizes the profit amounted to 281,084 dinars, and found that the greatest net profit achieved by farms, if produced at the optimal size of production reached in the study, 332,750 dinars, while the when-sized Maximization profit 285,000 dinars, which is less than the optimal size of production due to lack of response price levels to reach production to the level of the maximum as well as increasing production costs significantly after passing the optimal size which caused the decline in net profit, while the size of the marginal rate technical reached at a point 16829 and at the optimal size of production amounted to 9104 and when the size of the production of the sample was 6550 while the value when the size of the Maximization profit 4791, and found values as positive and decreases as the expansion of production and it shows that the production in the second stage, as the study proved that the output threshold of both labor and capital is equal to the flexibility of the variable element in the stability of the other element in the middle of the arithmetic, and also proved that all the values of the average labor and capital is greater than the values of marginal product to both elements, and the extents productivity was 1458 kg between break-even point and the size of the production of the sample and the extent of productive between the optimal size and size of production of the sample was $ 708 kg, while the -237 kg between the optimal size and size Maximization for profit, and these levels decrease and converge whenever the expansion of production and evidence for that is the possibility of expanding the use of resources farm down to the size of the optimum |