Home

321   Do not over-fertilize with nitrogen or apply nitrogen fertilizer after August 15.  To achieve darker green color, broadcast iron containing product or foliar apply on the turf a liquid solution of iron sulfate (dissolve 2 ounces iron sulfate in 4 gallons of water) including a surfactant (5 drops of a dishwasher detergent) per 1,000 square feet, or foliar apply a chelated iron source following label instructions.  An iron solution treatment should be made as needed for green turf color between regular fertilizer applications in April and July for locations in the Piedmont and in March, July and September for the Coastal Plains (consider turf fertilizers that contain iron).  Foliar apply the iron-containing solution in the late afternoon only when the air temperature is greater than 80^oF and soil moisture is adequate for good turf growth.

433   When growth begins in the spring, broadcast 1 lb triple superphosphate (0-46-0) and 2 lbs 15-0-15 or equivalent fertilizer per 1,000 square feet.  In July, broadcast 2 lbs 15-0-15 per 1,000 square feet.  (Recommendation when phosphorus and potassium soil tests are L-L, L-M, L-S, M-L, M-M, M-S)

434   When growth begins in the spring, broadcast 1 lb triple superphosphate (0-46-0) and 1 lb of a fertilizer containing around 30% nitrogen (such as 29-2-2, 29-2-5, 28-4-4, or 29-2-5) or equivalent fertilizer per 1,000 square feet.  In July, broadcast 1 lb 34-0-0 per 1,000 square feet.  (Recommendation when phosphorus and potassium soil tests are L-H, L-EX, M-H, M-EX)

435   When growth begins in the spring, broadcast 2 lbs 15-0-15 or equivalent fertilizer per 1,000 square feet.  In July, broadcast 2 lbs 15-0-15 per 1,000 square feet.    (Recommendation when phosphorus and potassium soil tests are S-L, S-M, S-S, H-L, H-M, H-S, EX-L, EX-M, EX-S)

436   When growth begins in the spring, broadcast 1 lb 34-0-0 or equivalent fertilizer per 1,000 square feet, and repeat the application in July.  (Recommendation when phosphorus and potassium soil tests are S-H, S-EX, H-H, H-EX, EX-H, EX-EX)

437   The extent of growth can be controlled by the amount of nitrogen fertilizer applied, low maintenance at a rate less than 1 lb nitrogen per 1,000 square feet per year, high maintenance, between 1 and 2 lbs nitrogen per 1,000 square feet per year.  If the grass clippings are removed, the amount of fertilizer applied should be increased by 25% and the turf soil tested every other fall to determine what addition of phosphate and/or potash fertilizer will be needed to sustain vigorous growth.

522   When the soil pH is greater than 7.0, iron, manganese and zinc availability decreases, resulting in their deficiency.  The soil pH should be lowered cautiously and only when
necessary because a pH less than 5.0 can also be detrimental.  To lower the soil pH to an optimal range, consult the Home and Garden Information Center at 1-888-656-9988 for
the recommended application rate of elemental sulfur or aluminum sulfate.  (Recommendation when soil pH is greater than 7.0)

535   Broadcast dolomitic limestone as recommended, either in the fall or early spring.