Soil Test Fertilizer Recommendations for Alabama Crops

 

Nutrient Recommendations for

Muscadine Grapes

(Crop Code No. 91)

Phosphorus

Potassium

Very high
High
Medium
Low
Very low

Pounds N-P2O5-K2O per acre

Very high
*-0-0
*-0-0
*-0-30
*-0-60
*-0-90

High
*-0-0
*-0-0
*-0-30
*-0-60
*-0-90

Medium
*-30-0
*-30-0
*-30-30
*-30-60
*-30-90

Low
*-60-0
*-60-0
*-60-30
*-60-60
*-60-90

Very Low
*-60-0
*-60-0
*-60-30
*-60-60
*-60-90

 

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 = 70 - 1.28X
1
Y = 80 - 1.10X
3
Y = 70 - 2.10X
2
Y = 80 - 0.74X
4
Y = 70 - 0.89X
3
Y = 80 - 0.55X

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

Muscadine grapes - Final remark. Aply P and K as recommended above and maintain pH in range of 6.0 to 7.0 by liming as needed according to soil test.

N should be applied as follows: In first and second year apply 0.04 pound N (two ounces ammonium nitrate) per plant per year of age in February and repeat in May and early July.

In third year apply 0.16 pound N (one-half pound ammonium nitrate) per plant in March and repeat in late May after fruit set.

In fourth year and later apply 0.32 pound N (one pound ammonium nitrate) in March and 0.16 pound N per plant per year of age in late May up to a maximum application of 0.55 pound N per plant or 100 pounds N per acre.

K requirement level

1

N rate

*

Lime code no.

2

PK code no.

20

Mg code no.

2

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