The book "Placement of varieties of main crops by natural zones of Bashkir ASSR" by Davydov is a unique study, which immerses the reader in the world of agronomy and agriculture , Highlighting the important aspects of , concerning the optimal arrangement of plant varieties depending on the natural conditions of the region. This publication will be especially interesting for those who are interested in agronomy, ecosystems, as well as practical aspects of agriculture in Russia. Davydov, as an experienced agronomist and researcher, offers the reader an in-depth analysis of the various natural zones of the Bashkir ASSR and their influence on the choice of varieties of agricultural crops. The book deals with important topics such as climatic conditions, soil types, and plant biological features. The author shares his observations and conclusions based on years of research, which makes the material not only theoretically sound, but also practical for farmers and agronomists. The book will be useful not only for professional agronomists, but also for students of agricultural universities, as well as for anyone interested in sustainable development of agriculture and ecology. It can become a reference book for those who want to understand how to choose the right varieties of crops depending on local climatic and soil conditions, which is especially true in the face of climate change and the need to increase yields. The topics raised in the book cover not only agronomic aspects, but also socio-economic. Davydov emphasizes the importance of choosing varieties to ensure food security in the region, as well as the need to adapt agriculture to changing environmental conditions. This makes the book relevant for discussion in the context of contemporary challenges facing the agricultural sector. The style of the author is distinguished by scientific rigor, but at the same time the availability of presentation. Davydov skillfully combines theory with practical examples, which allows the reader to easily assimilate information. His previous work has also been noted for his attention to detail and in-depth analysis, making him one of the leading experts in the field of agriculture. If you are looking for information on how to choose the right varieties for your region, or want to deepen your knowledge of agriculture in Bashkiria, this book will become a real storehouse of useful information for you Not only will it expand your horizons, but it will also help you better understand how natural factors affect rural production. Thus, “The Placement of Varieties of Main Crops by Natural Zones of the Bashkir ASSR” is not just a book, but a whole world of knowledge that awaits you. It will become a reliable assistant for practitioners and theorists seeking to improve the agricultural sector and increase its sustainability. Do not miss the opportunity to get acquainted with this valuable work, which, of course, will take a worthy place on the shelf of everyone who is interested in agriculture and agronomy.