NUTRIENT RECOMMENDATIONS FOR SAFFLOWER
 
     
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+
            
lb/a
lb/acre-2'
  
--------lb P2O5/acre--------
  
--------lb K2O/acre--------
800
40
  
20
14
10
0
0
  
34
24
14
0
0
1200
60
  
29
21
13
0
0
  
50
36
22
10
0
1600
80
  
39
28
17
10
0
  
67
48
29
10
0
2000
100
  
49
35
22
10
0
  
84
60
36
12
0
2400
120
  
59
42
26
10
0
  
101
72
43
14
0
Nitrogen recommendation = 0.05YG - STN - LC
Bray-1 P recommendation = (0.027 - 0.0014 STP)YG
Olsen P recommendation = (0.027 - 0.0017 STP)YG
Potassium recommendation = (0.048 - 0.0003 STK)YG

Safflower Statements:

  1. When P2O5 is recommended:  The P2O5 recommendation can be reduced by one third if applying as a starter.  If reduced by one third, soil test levels may be lowered over time.

  2. When very reduced or no-till is used and no deep nitrate test:  Because of your very reduced or no tillage system, 30 lb/a of additional nitrogen has been considered in the above N recommendation.

  3. When nitrogen and / or potassium are recommended:  Nitrogen plus K2O applications in contact with the seed should not exceed 10 lbs/a.  Nitrogen from DAP (18-46-0), and ammonium thiosulfate (21-0-0-26) should NOT be placed with the seed.
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