NUTRIENT RECOMMENDATIONS FOR OATS
 
     
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+
            
bu/a
lb/acre-2'
  
--------lb P2O5/acre--------
  
--------lb K2O/acre--------
60
78
  
35
25
15
0
0
  
66
46
25
0
0
70
91
  
41
29
18
10
0
  
77
53
29
0
0
80
104
  
47
33
20
10
0
  
88
61
33
10
0
90
117
  
52
38
23
10
0
  
99
68
38
10
0
100
130
  
58
42
25
10
0
  
111
76
42
10
0
110
143
  
64
46
28
10
0
  
122
84
46
10
0
Nitrogen recommendation = 1.3YG - STN - LC
Bray-1 P recommendation = (0.644 - 0.032 STP)YG
Olsen P recommendation = (0.644 - 0.041 STP)YG
Potassium recommendation = (1.277 - 0.0086 STK)YG

Oats 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 fertilizers should be limited to 25 lbs/a when placed in contact with the seed in 6 or 7-inch rows.  Reduce these values correspondingly for wider row width.  Reduce these amounts be half for dry or coarse textured soils.  DO NOT place thiosulfate in direct contact with the seed.
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