The paper presents the review of modern meanings, definitions, terms and limitations of technological, technical and organizational innovations with indication of the role played by economic subjects in the innovation processes with particular consideration of preconditions and possibilities of introducing innovations in agriculture. Meaning evolutions of innovations as a basic element of economic development of the 21st century were raised. Technological and technical innovation terms in the micro and macro scale were discussed (global market); modern term of innovations as a process presenting a set of phenomena and events which create new technologies and products were also raised. Forms of operation, meaning and place of enterprises, research and development units and administration in innovative processes. Sources of knowledge of potential producers on the demand for innovations. Functioning of basic sciences, role and meaning of income (profit), monopolization and reasons for limiting competitiveness. Aspiration to change money into knowledge, knowledge into innovation and innovation into money. Characteristic features of innovations in agricultural technologies (creativity, rate, scope). Feedback between technologies and technical means. Limitations caused by dispersion and diversity of a potential market and income barriers, including participation of agriculture in GDP. Possible trends of development and changes of innovativeness. The paper includes materials available in the literature and results of own studies.