Meeting but not exceeding nutrient requirements can be accomplished by fertilizing

Soil testing is the most common method of determining fertilization requirements. Proper methods of soil sampling, testing, and interpretation are needed. Soil testing documents

Tissue testing evaluates the concentration of nutrients in the forage, not simply the amount available to the plant. Development stage, plant part, and analysis techniques are important. Tissue testing documents

Forage yield prediction allows for estimating fertilization requirements by multiplying the amount of forage produced by the percentage of that nutrient in the tissue. Forage yield prediction documents