Contents: 1. Introduction to internet of things. 2. Role of Arduino in agricultural field and its interfacing with external devices. 3. Role of node MCU in agricultural field and its interfacing with external devices. 4. Development of BLYNK app to automate agriculture field. 5. Development of local web server for automation. 6. Lab view based data logger for agricultural field parameters monitoring system. 7. MATLAB based data logger for agricultural field parameters monitoring system. 8. A smart control for site-specific management of fixed irrigation system. 9. I could and cayenne based perimeter monitoring system for agricultural field. 10. Scilab based data logger for plant protection from fire in agricultural field. 11. Smart greenhouse monitoring system for flower plant growth. The primary objective of writing this book is to provide a platform to automate agricultural field with various sensor and throw the data on cloud with internet of thing. The book provides the basic knowledge of the programming and interfacing of the devices with IoT modem and programming. The aim is to explain the basic steps to understand the IoT and its application in agriculture field. It would be a reference book for Postgraduate/ undergraduate engineering students. Students from Electronics, Electrical, Mechatronics, Robotics, Mechanical, Computer science can avail the book for their projects and research. The concept which makes this book unique is a book programming based real time project prototypes. This book is entirely based on the practical experience of the authors while undergoing projects with the students and industries.