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Crop Code No. 044

 

 

 

 

 

 Cool-Season Grass Maintenance

 

 Soil Groups 1, 2, 3, or 4

 

 

 

Desired pH 6.0 – 6.5

Phosphorus

Potassium

 

Low

Medium

Sufficient

High

Excessive

 

Comment Numbers

Low

407

407

407

408

408

Medium

407

407

407

408

408

Sufficient

409

409

409

410

410

High

409

409

409

410

410

Excessive

409

409

409

410

410

COMMENTS (68, 69, 407, 408, 409, 410, 411, 535, 654, 655)     

407   In September, broadcast 2 lbs triple phosphate (0-46-0) and 6 lbs 16-4-8 or equivalent fertilizer per 1,000 square feet, and then if more growth or better color is desired in November, broadcast 6 lbs 16-4-8 or equivalent fertilizer per 1,000 square feet again.  Broadcast 6 lbs 16-4-8 per 1,000 square feet again in mid to late February.  Slow-release fertilizers preferred.  (Recommendation when phosphorus and potassium soil tests are L-L, L-M, L-S, M-L, M-M, M-S)

408   In September, broadcast 2 lbs triple phosphate (0-46-0) and 3 lbs of a fertilizer containing around 30% nitrogen (such as 29-2-2, 29-2-5, 28-4-4, or 29-2-5) per 1,000 square feet, and then repeat nitrogen application again in November if more growth or better color is desired.  Repeat nitrogen application in mid to late February.  Slow-release fertilizers preferred.  (Recommendation when phosphorus and potassium soil tests are L-H, L-EX, M-H, M-EX)

409   In September, broadcast 6 lbs 15-0-15 or equivalent fertilizer per 1,000 square feet, and then repeat application in November if more growth or better color is desired.  Repeat application again in mid to late February.  Slow-release fertilizers preferred.  (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)

410   In September, broadcast 2 lbs 34-0-0 per 1,000 square feet, and then repeat in November if more growth or better color is desired.  Broadcast 2 lbs 34-0-0 per 1,000 square feet in mid to late February.  Slow-release fertilizers preferred.   (Recommendation when phosphorus and potassium soil tests are H-H, H-EX, EX-H, EX-EX)

411   The extent of growth can be controlled by the amount of nitrogen fertilizer applied, low maintenance at the rate between 1 to 2 lbs nitrogen per 1,000 square feet per year, high maintenance between 2 to 3 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 additions of phosphate and/or potash will be needed to sustain vigorous growth.

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