The correct answer is D) All of the above.
The Karnataka Horticulture Department provides a wide range of services to farmers, including soil testing, plant tissue analysis, and advisory services.
Soil testing is a service that helps farmers to determine the nutrient content of their soil. This information can be used to select the right crops and fertilizers for the soil.
Plant tissue analysis is a service that helps farmers to determine the nutrient content of their plants. This information can be used to diagnose nutrient deficiencies and toxicities.
Advisory services are a service that provides farmers with information on a variety of topics, such as crop selection, pest management, and irrigation.
These services are essential for farmers to improve their yields and profits.