After reading this article you will learn about:- 1. Subject Matter of Diagnosis and Recommendation Integrated System (DRIS) 2. Establishment of DRIS Norms 3. Determination of Relative NPK Requirement 4. Calculation of DRIS Indices 5. Using DRIS Indices to Diagnose NPK Requirements 6. Time of Sampling DRIS 7. Surveys of DRIS 8. Routine Use of […]