Soil Test Fertilizer Recommendations for Alabama Crops

 

Nutrient Recommendations for

Athletic Field

(Crop Code No. 46)

Phosphorus

Potassium

Very high
High
Medium
Low
Very low

Pounds N-P2O5-K2O per acre

Very high
200-0-0
200-0-0
200-0-40
200-0-80
200-0-80

High
200-0-0
200-0-0
200-0-40
200-0-80
200-0-80

Medium
200-40-0
200-40-0
200-40-40
200-40-80
200-40-80

Low
200-80-0
200-80-0
200-80-40
200-80-80
200-80-80

Very Low
200-80-0
200-80-0
200-80-40
200-80-80
200-80-80

 

For more accurate fertilizer recommendations, use the equations below for your soil group:

Fertilizer Recommendation Formula
P2O5
K2O
Soil Group*
Equation**
Soil Group*
Equation**
1 & 2
Y = 90 - 1.70X
1
Y = 90 - 0.72X
3
Y = 90 - 2.80X
2
Y = 90 - 0.46X
4
Y = 90 - 1.19X
3
Y = 90 - 0.35X

4
Y = 90 - 0.35X
* - Use Soil Group from soil test report, if available.
** - Y = pounds fertilizer P2O5 or K2O per acre required; X = soil test P or K

 

Comments

For athletic fields, nitrogen should be divided into four applications at two-month intervals beginning in March. Apply additional nitrogen at the rate of 50 pounds of N (150 pounds ammonium nitrate or equivalent) per acre if needed to maintain desired growth and color. A football field plus 20 feet on all sides is about two acres.

K requirement level

2

N rate

200

Lime code no.

5

PK code no.

12

Mg code no.

1

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