Abstract: Background and Objective: The aim of the work was to study the possibilities of intensifying the forage production on the basis of optimization of the cropland area structure of forage crops to provide the dairy cattle with feed in an unreliable moistening zone in the Russian Federation. Methodology: The optimal feed acreage structure, which was meant for the farm firms with intensive crop farming and dairy cattle breeding in the unstable moistening zone to be provided with their own field production forages, has been established. The optimization concept of the feed acreage structure, which was adapted to the zonal soil and climatic conditions, has been suggested. The concept is also based on the application of economically sound technologies of the fodder crop cultivation studied and on the methods of mathematical modeling in economics. The statistical result analysis was made according to the dispersion analysis. Results: The study has been determined that in unstable moistening zone, maize for silage, fodder beet, Sudan grass should be cultivated according to the intensive technology and medick to the extensive technology. For the intensive crop farming and dairy cattle breeding farm firms, the following fodder crop acreage structure is optimal: The maize for silage and soiling food take 33.0%, the annual grasses for hay and soiling food 33.0%, the perennial grasses for hay and soiling food 30.0% and the fodder beet 4.0%. This structure provides the maximum qualified net profit from 1 ha to110.2 € ha–1, the feed unit yield 4060.4 f.u. ha–1, with their prime cost 59.7 € t–1. Conclusion: The proposed integrated approach to optimize the cropland area structure of forage crops allows developing an economically sound structure of arable land for any agricultural enterprise that can ensure the maximum revenue per hectare. A differentiated approach to the cultivation technology contributes to improving the soil fertility, productivity and quality of agricultural production.