Which of the following is an example of an agricultural extension method used to disseminate information to farmers?

Explanation

Agricultural extension methods are ways to teach farmers and share information with them. Extension workers use different methods to help farmers learn about new techniques, crops, and technologies. Good methods help farmers understand and apply new knowledge.

Farmer field schools are an extension method. In these schools, farmers gather in groups to learn together. They work in practice fields, test new methods, and discuss results. Extension workers guide the learning but farmers discover solutions through hands-on experience.

Crop rotation, soil testing, and irrigation systems are farming practices or technologies, not teaching methods. They are what farmers learn about, not how they learn about them.