Agronomic Services

Crop Fertilization Based on North Carolina Soil Tests

Part III:  Notes for Specific Crops / Situations
Special Printout Groups Two plant groups require lime and fertilizer recommendations that are appropriate for application to relatively small areas. These special printout groups are A. Lawns, Gardens and Ornamentals and B. Centipedegrass. For both of these groups, lime and fertilizer recommendations are expressed in lb/1000 ft², as shown in Table 3.1. The potassium index (K-I) and the phosphorus index (P-I) determine the fertilizer grade recommended. For special printout group A, the amount of fertilizer recommended supplies 1.0 lb of nitrogen per 1000 ft². For special printout group B, the rate is 0.5 lb of nitrogen per 1000 ft². Note 4: Fertilization of Lawns, Gardens and Ornamentals provides additional information regarding supplemental nitrogen rates and time of application.
Table 3.1 Recommended fertilizer rates (lb/1000 ft²) for lawns and ornamentals Lawns, Gardens & Ornamentals Centipedegrass Phosphorus Index Potassium Index Fertilizer Grade Rate Fertilizer Grade Rate < 25 < 25 5-10-10 20 3-9-9 16 < 25 > 25 to 50 5-10-10 20 5-10-10 10 < 25 > 50 5-10-5 20 5-10-10 10 > 25 to 50 < 25 6-6-18 17 5-5-15 10 > 25 to 50 > 25 to 50 10-10-10 10 5-5-15 10 > 25 to 50 > 50 5-10-5 20 N only 0.5 > 50 < 25 8-0-24 12.5 8-0-24 6 > 50 > 25 to 50 15-0-14 7 15-0-14 3 > 50 > 50 N only 1 N only 0.5
Crop Notes $ Note: Secondary Nutrients and Micronutrients Note 1: Fertilization of Tobacco Note 2. (discontinued) Note 3: Fertilization of Field Crops Note 4: Fertilization of Lawns, Gardens and Ornamentals Note 5: Fertilization of Christmas Trees Note 6: Fertilization of Commercial Vegetable Crops Note 7: Fertilization of Trellised and Staked Tomatoes Note 8. (discontinued) Note 9: Soil Analysis of Growth Substrates for Greenhouse Crops Note 10. (discontinued) Note 11: Fertilization of Nursery Crops—Container and Field Note 12. Fertilization of Forage and Pasture Crops Note 13. (discontinued) Note 14: Fertilization of Golf and other Fine Turf Note 15: Fertilization of Pecans and Miscellaneous Nuts and Fruits Note 16: Fertilization of Apples Note 17: Fertilization of Peaches Note 18: Fertilization of Small Fruits Hydroseeded Areas Ponds Wildlife Food Plots
	Hardy DH, Tucker MR, Stokes CE. 2013. Crop fertilization based on North Carolina soil tests. Raleigh (NC): North Carolina Department of Agriculture and Consumer Services, Agronomic Division. Circular No. 1.