Introduction:
Agricultural engineering and farm machinery concepts are important topics in the field of agriculture. These concepts involve the design, development, and application of various engineering principles and technologies to improve agricultural practices. Journals that discuss these topics provide valuable insights and research findings in this field. Here are some recommended journals that cover agricultural engineering and farm machinery concepts:

1. Journal of Agricultural Engineering:
This journal focuses on the latest advancements and research in the field of agricultural engineering. It covers a wide range of topics including farm machinery, precision agriculture, irrigation systems, post-harvest technology, and renewable energy in agriculture. The journal publishes original research articles, reviews, and technical notes.

2. Biosystems Engineering:
Biosystems Engineering is an international journal that covers various aspects of agricultural engineering, including machinery design, automation, and robotics for agricultural applications. It also publishes research related to crop production, soil and water management, and agricultural waste management. The journal provides a platform for researchers and professionals to share their innovative ideas and solutions.

3. Journal of Terramechanics:
The Journal of Terramechanics focuses on the mechanics of soil-vehicle systems and their applications in agriculture. It covers topics such as traction and compaction, soil dynamics, and off-road vehicle design. The journal publishes research articles, technical notes, and reviews related to the mechanical behavior of agricultural terrains.

4. Transactions of the ASABE:
The Transactions of the American Society of Agricultural and Biological Engineers (ASABE) is a respected journal in the field of agricultural engineering. It covers a wide range of topics including farm machinery, bioenergy, water resources, and food engineering. The journal publishes research articles, technical papers, and case studies related to agricultural engineering.

5. Agricultural Engineering International: CIGR Journal:
This journal is published by the International Commission of Agricultural and Biosystems Engineering (CIGR). It covers various aspects of agricultural engineering, including farm machinery, post-harvest technology, and agricultural structures. The journal publishes research articles, technical notes, and case studies from researchers and professionals worldwide.

Conclusion:
These journals provide a wealth of knowledge and research findings related to agricultural engineering and farm machinery concepts. Researchers, professionals, and students in the field of agriculture can benefit from these journals to stay updated with the latest advancements and contribute to the development of this field.