The article is devoted to the outstanding Russian scientist V.I. Vernadsky, who is one of the founders of ecology. As a student of V.V. Dokuchaev, he developed his ideas of a systematic dynamic approach to the study of nature and introduced deep scientific ecological content into the concepts of the biosphere and the noosphere. V.I. Vernadsky is the founder of the complex of modern Earth sciences (geochemistry, biogeochemistry, radiology, hydrogeology) and the creator of many scientific schools. In his scientific work, he covered many scientific areas, from geology to the study of the role of living matter in geochemical cycles, from soil science to the biosphere, the increasing influence of scientific thought, human activity in the biosphere and its transformation into the noosphere. The importance of agriculture in the biosphere and noosphere is considered. Biosphere is an area of active life of the Earth (troposphere, hydrosphere and part of the lithosphere), the composition, structure and energy of which are mainly due to the activity of living organisms. The noosphere is its thinking shell. Agriculture, the most important part of which are grassland ecosystems, is an important component of the biosphere, a reproducible, autotrophic sustainable resource (energy, environmental, food and feed). In light of the pressing environmental problems facing the world, environmental education and environmental thinking are a priority for the development of the biosphere, the noosphere and agriculture.