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The study of the production function of orange orchards in Diyala Governorate was conducted through a random sample of 44 farmers using a questionnaire prepared for this purpose. The multiple regression of the elements of the function was analyzed, including the amount of chemical fertilizer, animal manure, pesticide costs, fuel costs, labor costs and number of irrigation during the year and the costs of maintenance, The analysis showed that the effect of the amount of fertilizer, the amount of animal manure, the cost of fuel, the number of irrigation and the cost of maintenance have a positive effect on the quantity of production. The labor costs and the costs of in pesticide had a negative effect on the quantity of production where the elasticity was negative, The descriptive aspect of the research included a questionnaire of farmers about the problems facing orange production in Diyala Governorate, where it became clear that the main obstacles facing orange production are the lack of government support for production inputs and the opening of imports followed by problems of high input costs, low crop prices, and the problem of rising wages and lack of experience and then the problem of neglect orchards and problems of non-regular agriculture and non-renewal of trees, respectively, It was recommended to prepare programs for the fertilization of trees and pest control based on the results of scientific research and the introduction of drip irrigation technology to reduce water losses and reduce the fungal diseases and support prices of inputs and prices of the crop and reduce the import of citrus and to awareness the farmers the importance of organization and specialization of fiel work and achieve the optimal combination of input to reach productive efficiency.

Economic analysis for the most important obstacles to the production of orange crop in Diyala / a study for the season of 2018