NUTRIENT RECOMMENDATIONS FOR SUDAN GRASS and FORAGE SORGHUM
 
     
Soil Test Phosphorus, ppm
  
Soil Test Potassium, ppm
Yield
goal
Soil N plus fertilizer N required 
  
VL
L
M
H
VH
  
VL
L
M
H
VH
   
Bray-1
0-5
6-10
11-15
16-20
21+
  
0-40
41-80
81-120
121-160
161+
   
Olsen
0-3
4-7
8-11
12-15
16+
            
ton/a
lb/acre-2'
  
--------lb P2O5/acre--------
  
--------lb K2O/acre--------
3.0
75
  
30
21
13
0
0
  
111
75
39
0
0
4.0
100
  
40
29
17
10
0
  
148
100
52
0
0
5.0
125
  
50
36
22
10
0
  
185
125
65
0
0
6.0
150
  
60
43
26
10
0
  
222
150
78
10
0
7.0
175
  
70
50
30
11
0
  
259
175
91
10
0
8.0
200
  
80
57
35
12
0
  
296
200
104
10
0
Nitrogen recommendation = 25YG - STN - LC
Bray-1 P recommendation = (11.0 - 0.533 STP)YG
Olsen P recommendation = (11.0 - 0.7 STP)YG
Potassium recommendation = ( 43.0 - 0.3 STK)YG

Sudan Grass and Forage Sorghum Statements:

  1. When nitrogen is recommended:  The nitrogen should be divided in half if more than 100lb N is recommended, one half being applied at /or prior to seeding time, and the other half after the first cutting.
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