NUTRIENT RECOMMENDATIONS FOR MUSTARD, RAPESEED AND CANOLA
 
     
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+
            
cwt/a
lb/acre-2'
  
--------lb P2O5/acre--------
  
--------lb K2O/acre--------
10
65
  
33
24
15
10
0
  
47
34
20
10
0
15
97
  
49
36
23
10
0
  
71
50
30
10
0
20
130
  
65
48
30
13
0
  
94
67
40
13
0
25
162
  
82
60
38
16
0
  
118
84
50
16
0
Nitrogen recommendation = 6.5YG - STN - LC
Bray-1 P recommendation = (3.6 - 0.17 STP)YG
Olsen P recommendation = (3.6 - 0.22 STP)YG
Potassium recommendation = (5.4 - 0.034 STK)YG

Mustard Rapeseed, and Canola 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 nitrogen is recommended: Because of your very reduced or no tillage system, 30 lb/a of additional nitrogen has been considered in the above N recommendation.

  3. Nitrogen plus K2O applications in contact with the seed should not exceed 10 lbs/a in six or seven inch rows.  Nitrogen from urea, DAP (18-46-0), and ammonium thiosulfate (21-0-0-26)  should NOT be placed with the seed.

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