Economic efficiency at agricultural companies greatly depends on availability of production means, including fixed and circulating assets, their structure and application efficiency. Specialization has a significant impact on the structure of production means. Problems of optimization of the structure of production means are studied by scientists from near abroad, but their research are of fragmented character and mostly do not take into account specialization of agricultural producers. In this regard, the relevance of research conducted is conditioned by the need to determine the perfect structure of fixed and circulating assets in the context of specialization profile, which will serve as a guide for agricultural companies, especially when scheduling investment activities. The paper dwells on the following main areas of specialization: dairy and beef cattle; grain production with dairy cattle breeding; grain production with dairy and beef cattle breeding; dairy cattle breeding. The effect of the natural material and age structure of fixed assets, as well as the structure of circulating assets depending on the functional role for the economic and financial indicators of agricultural companies in the context of specialization is analyzed. The effect of qualitative indicators of agricultural production on the structure of production was studied, partial dependencies between the studied indicators were identified, and the perfect structure of fixed and circulating assets was determined according to specialization. Investment options in fixed assets of inefficiently functioning agricultural companies were proposed to bring their structure to the optimal level. In terms of specialization profile, models were constructed reflecting the effect of factor indicators (cost of production means elements) on the efficient one (revenue from agricultural products sales). Regression analysis allowed to determine the nature of the effect of factor indicators on the efficient one, as well as to identify reserves for increasing production and financial indicators. These developments can be used for scheduling production and investment activities of agricultural companies.

Raising of economic efficiency and sustainability of the national agroindustrial production in conditions of fast development of science, machinery and technology, high market competition, and integration processes expansion is largely conditioned by development activation, implementation and investment support of innovations. Enough attention is paid to the issues of sustainability, innovative development and investment activity in modern economic literature. At the same time, the problem of investment support for sustainable innovative development of agroindustrial complex is still studied poorly, which makes scientific research in this field relevant. Based on brief retrospective analysis, an improved understanding of the sustainable development of the agroindustrial complex, as well as in the context of its components, is proposed in the paper. It is shown that the basis for sustainable agroindustrial complex development in modern conditions is the increase of innovative activity at all the management levels. As a result of the study, a list of the main regulatory and legal acts regulating the issues of innovation activity and the privileges and incentives established by them for business entities, including agrarian ones, were systematized. The main problems preventing activation of innovative development of agroindustrial production are listed. In order to solve these problems the authors within the research framework developed a concept of investment support for sustainable innovative development of the agrarian sector, which includes eight interrelated consecutive blocks. Implementation of the proposed concept will contribute to more complete involvement of potential financing sources and their effective use in the investment activities, thereby ensuring competitiveness of the national agroindustrial complex and its sustainable development, considering interests of the current and future generations.

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Based on the systematization and clarification of the theoretical and methodological foundations on the issues under study, scientific and methodological proposals have been developed to improve investment and innovation activities, tax planning in agriculture, the mechanism for pricing and distributing income between the areas of the agroindustrial complex by stages of distribution.

The theoretical and methodological apparatus of investment activity has been developed. An analysis was made of models of investment (depending on the role of the state) and innovative development, as well as models of economic growth based on innovation. Nonlinear models for the implementation of the innovation process and types of national innovation models have been studied. The main directions of innovative development of agroindustrial production by areas of activity are identified.