The book "Hydraulic drive of agricultural machines" edited by Alexei Arkhipovich Kalekin is a unique publication that will become an indispensable assistant for specialists in the field of agriculture, engineers and students of technical universities. It collects the knowledge and experience of a whole team of authors, which makes it a real storehouse of information for everyone who is interested in modern technologies in the agricultural sector. Agriculture is not only a labor-intensive process, but also an area where innovation and technology play a key role. Hydraulic systems, as an important part of mechanization, can significantly improve the efficiency of agricultural machinery. The book discusses in detail the principles of operation of hydraulic actuators, their design features and application in various machines, such as tractors, combines and other units. The reader will be able to learn how to choose the right hydraulic system for a specific task and what factors need to be taken into account when operating it. This book will be especially useful for those involved in the design and maintenance of agricultural machinery. Students and graduate students studying agronomy, agricultural mechanization or related disciplines will find in it comprehensive answers to many questions related to hydraulic systems. In addition, practicing engineers and mechanics will be able to use it as a guide that will help in solving specific problems and optimizing the work of technology. The topics raised in the book cover a wide range of issues, from the basics of hydraulics to complex control systems. The authors share their experience, describing both theoretical aspects and practical examples, which makes the material available for understanding. The reader will be able to learn about current trends in the development of hydraulic systems, as well as about new technologies that are already beginning to be introduced into agriculture. This publication is not only informative, but also inspires new ideas and solutions. Alexey Arkhipovich Kalekkin, known for his work in the field of agricultural mechanization, gathered a team of professionals under one cover, which adds additional value to the book. His previous works, such as “Mechanization of soil treatment” and “Modern technologies in agronomy”, have also received recognition among specialists and students. The author's style is distinguished by clarity and accessibility, which allows to convey complex technical aspects to a wide audience. The book “Hydraulic drive of agricultural machines” will be an excellent addition to the library of anyone interested in agronomy, mechanization or engineering. It not only expands knowledge, but also inspires the application of new technologies in practice. Readers interested in finding information about mechanization, hydraulic systems and modern approaches to agriculture will surely find useful and relevant information in this book. Do not miss the opportunity to immerse yourself in the world of hydraulic technologies and discover new horizons in agriculture This book is your reliable companion on the way to success in the agricultural sector!