The use of production elements without reference to economic and technical criteria result in reduction productivity on the one hand and the high costs on the other hand, and this is lead to the lack of full and optimized usage of resources. Therefore the interested in agricultural sector must focus their attention on the ways leading to the increase in production, and the scientific methods in farm management will be necessary and sufficient condition to achieve that. This paper aims to identify the economic efficiency of crop planting through the application of measures of economic efficiency of agriculture and the most important indicators. The requirements of research has been met depending on the data form questionnaire and were randomly distributed to 150 from the crop's farmers in Diyala province, this province was chosen to be a case study because its famous for planting the crop and contributes 62% of the total cultivated area at the country level .The results showed that all farmers have achieved positive returns in according to the used economic criteria (net cash income, net farm income, return on labor farm, farm revenue management, revenue dinar investor, the period of recovery of capital).The category (2.7 - 5 ha ) of possession were the best among the studied categories, which achieved the highest returns through the used criteria. The net cash income contributed as 86% of net farm income due to the limited quantities for domestic consumption which was 0.02 as a highest rate. The results indicate that peanut farmer has merit as an economic return on revenue dinar investor as 1.8 dinars at the level of the sample and this is rewarding, as compared to other productive projects. The period of recovery of capital at the level of the sample was 3.4 years, but encouraging at the level of large factions relatively.