Soil Test Fertilizer Recommendations for Alabama Crops

 

Nutrient Recommendations for

Roadside Turf Maintenance

(Crop Code No. 48)

Phosphorus

Potassium

Very high
High
Medium
Low
Very low

Pounds N-P2O5-K2O per acre

Very high

80-0-0
80-0-0
80-0-40
80-0-80
80-0-80

High

80-0-0
80-0-0
80-0-40
80-0-80
80-0-80

Medium

80-40-0
80-40-0
80-40-40
80-40-80
80-40-80

Low

80-80-0
80-80-0
80-80-80
80-80-80
80-80-80

Very Low

80-80-0
80-80-0
80-80-80
80-80-80
80-80-80

 

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

 

K requirement level

2

N rate

80

Lime code no.

1

PK code no.

12

Mg code no.

1


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