This article throws light upon the twelve main principles for applying fertilizer to soil. The principles are: 1. Soil Fertility 2. Balance Use of Fertilizers 3. Soil Condition 4. Erosion 5. Drainage 6. Temperature 7. Rainfall 8. Crop Rotation 9. Deep Placement of Fertilizers 10. Basal Application of Fertilizer 11. Split Application 12. Nutrient requirement […]