|
|
Nutrient Recommendations for Wyoming CropsThe nutrient recommendations below come from University of Wyoming Cooperative Extension publications. For more details about crop nutrition, please see the complete publications.
|
|
Soil Organic Matter (%) |
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
255
|
245
|
235
|
225
|
215
|
7 - 12
|
225
|
215
|
205
|
195
|
185
|
13 - 18
|
195
|
185
|
175
|
165
|
155
|
19 - 24
|
165
|
155
|
145
|
135
|
125
|
25 - 30
|
135
|
125
|
115
|
105
|
95
|
31 - 36
|
105
|
95
|
85
|
75
|
65
|
37 - 42
|
75
|
65
|
55
|
45
|
35
|
43 - 48
|
45
|
35
|
25
|
0
|
0
|
> 48
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 1.6 lbs N/bushel change in grain yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
80
|
100
|
125
|
7 - 14
|
45
|
65
|
90
|
15 - 22
|
0
|
30
|
55
|
> 22
|
0
|
0
|
0
|
Add or subtract 0 - 6 lbs P2O5/bushel change in grain yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
255
|
245
|
235
|
225
|
215
|
7 - 12
|
225
|
215
|
205
|
195
|
185
|
13 - 18
|
195
|
185
|
175
|
165
|
155
|
19 - 24
|
165
|
155
|
145
|
135
|
125
|
25 - 30
|
135
|
125
|
115
|
105
|
95
|
31 - 36
|
105
|
95
|
85
|
75
|
65
|
37 - 42
|
75
|
65
|
55
|
45
|
35
|
43 - 48
|
45
|
35
|
25
|
0
|
0
|
> 48
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 9.0 lbs N/ton change in silage yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
80
|
100
|
125
|
7 - 14
|
45
|
65
|
90
|
15 - 22
|
0
|
30
|
55
|
> 22
|
0
|
0
|
0
|
Add or subtract 3.0 lbs P2O5/ton change in silage yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
255
|
245
|
235
|
225
|
215
|
7 - 12
|
225
|
215
|
205
|
195
|
185
|
13 - 18
|
195
|
185
|
175
|
165
|
155
|
19 - 24
|
165
|
155
|
145
|
135
|
125
|
25 - 30
|
135
|
125
|
115
|
105
|
95
|
31 - 36
|
105
|
95
|
85
|
75
|
65
|
37 - 42
|
75
|
65
|
55
|
45
|
35
|
43 - 48
|
45
|
35
|
25
|
0
|
0
|
> 48
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 9 lbs N/ton change in silage yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
80
|
100
|
125
|
7 - 14
|
45
|
65
|
90
|
15 - 22
|
0
|
30
|
55
|
> 22
|
0
|
0
|
0
|
Add or subtract 3.0 lbs P2O5/ton change in silage yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
255
|
245
|
235
|
225
|
215
|
7 - 12
|
225
|
215
|
205
|
195
|
185
|
13 - 18
|
195
|
185
|
175
|
165
|
155
|
19 - 24
|
165
|
155
|
145
|
135
|
125
|
25 - 30
|
135
|
125
|
115
|
105
|
95
|
31 - 36
|
105
|
95
|
85
|
75
|
65
|
37 - 42
|
75
|
65
|
55
|
45
|
35
|
43 - 48
|
45
|
35
|
25
|
0
|
0
|
> 48
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 9 lbs N/ton change in silage yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
80
|
100
|
125
|
7 - 14
|
45
|
65
|
90
|
15 - 22
|
0
|
30
|
55
|
> 22
|
0
|
0
|
0
|
Add or subtract 3.0 lbs P2O5/ton change in silage yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Fertilizer Rate
|
---|---|
ppm
|
lb N/Acre
|
0 - 3
|
40
|
4 - 6
|
20
|
> 6
|
0
|
Do not adjust nitrogen rates for soil organic matter levels.
Soil NO3-N Test
(ppm) |
Percent in Stand
|
||||||
---|---|---|---|---|---|---|---|
Grass :
Legume |
100:0
|
80:20
|
60:40
|
40:60
|
20:80
|
0:100
|
|
Fertilizer Rate (lb N/Acre)
|
|||||||
0 - 6
|
250
|
200
|
150
|
100
|
50
|
0
|
|
7 - 12
|
230
|
180
|
130
|
80
|
30
|
0
|
|
13 - 18
|
210
|
160
|
110
|
60
|
0
|
0
|
|
19 - 24
|
190
|
140
|
90
|
40
|
0
|
0
|
|
25 - 30
|
170
|
120
|
70
|
20
|
0
|
0
|
|
31 - 36
|
150
|
100
|
50
|
0
|
0
|
0
|
|
37 - 42
|
130
|
80
|
30
|
0
|
0
|
0
|
|
43 - 48
|
110
|
60
|
0
|
0
|
0
|
0
|
|
49 - 54
|
90
|
40
|
0
|
0
|
0
|
0
|
|
55 - 60
|
70
|
20
|
0
|
0
|
0
|
0
|
Add or subtract 40.0 lbs N/ton change in hay yield goal.
Soil Phosphorus Test
(ppm) |
Percent in Stand
|
||||||
---|---|---|---|---|---|---|---|
Grass :
Legume |
100:0
|
80:20
|
60:40
|
40:60
|
20:80
|
0:100
|
|
Fertilizer Phosphorus (lb P2O5/Acre)
|
|||||||
Coarse-textured Soils
|
|||||||
0 - 6
|
55
|
60
|
65
|
70
|
75
|
80
|
|
7 - 14
|
20
|
25
|
30
|
35
|
40
|
45
|
|
15 - 22
|
0
|
0
|
0
|
0
|
0
|
0
|
|
> 22
|
0
|
0
|
0
|
0
|
0
|
0
|
|
Medium-textured Soils
|
|||||||
0 - 6
|
75
|
80
|
85
|
90
|
95
|
100
|
|
7 - 14
|
40
|
45
|
50
|
55
|
60
|
65
|
|
15 - 22
|
0
|
0
|
0
|
20
|
25
|
30
|
|
> 22
|
0
|
0
|
0
|
0
|
0
|
0
|
|
Fine-textured Soils
|
|||||||
0 - 6
|
100
|
105
|
110
|
115
|
120
|
125
|
|
7 - 14
|
65
|
70
|
75
|
80
|
85
|
90
|
|
15 - 22
|
30
|
35
|
40
|
45
|
50
|
55
|
|
> 22
|
0
|
0
|
0
|
0
|
0
|
25
|
Add or subtract 15.0 lb P2O5/ton change in hay yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
140
|
130
|
120
|
110
|
100
|
7 - 12
|
120
|
110
|
100
|
90
|
80
|
13 - 18
|
100
|
90
|
80
|
70
|
70
|
19 - 24
|
80
|
70
|
60
|
50
|
40
|
25 - 30
|
60
|
50
|
40
|
30
|
0
|
31 - 36
|
40
|
30
|
0
|
0
|
0
|
> 36
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 1.55 lbs N/bushel change in grain yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
20
|
40
|
65
|
7 - 14
|
0
|
20
|
45
|
15 - 22
|
0
|
0
|
25
|
> 22
|
0
|
0
|
0
|
Add or subtract 0.7 lbs P2O5/bushel change in grain yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
140
|
130
|
120
|
110
|
100
|
7 - 12
|
120
|
110
|
100
|
90
|
80
|
13 - 18
|
100
|
90
|
80
|
70
|
70
|
19 - 24
|
80
|
70
|
60
|
50
|
40
|
25 - 30
|
60
|
50
|
40
|
30
|
0
|
31 - 36
|
40
|
30
|
0
|
0
|
0
|
> 36
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 1.15 lbs N/bushel change in grain yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
20
|
40
|
65
|
7 - 14
|
0
|
20
|
45
|
15 - 22
|
0
|
0
|
25
|
> 22
|
0
|
0
|
0
|
Add or subtract 0.5 lbs P2O5/bushel change in grain yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
140
|
130
|
120
|
110
|
100
|
7 - 12
|
120
|
110
|
100
|
90
|
80
|
13 - 18
|
100
|
90
|
80
|
70
|
70
|
19 - 24
|
80
|
70
|
60
|
50
|
40
|
25 - 30
|
60
|
50
|
40
|
30
|
0
|
31 - 36
|
40
|
30
|
0
|
0
|
0
|
> 36
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 1.72 lbs N/bushel change in grain yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
20
|
40
|
65
|
7 - 14
|
0
|
20
|
45
|
15 - 22
|
0
|
0
|
25
|
> 22
|
0
|
0
|
0
|
Add or subtract 1.0 lbs P2O5/bushel change in grain yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test (ppm) |
Fertilizer Rate (lb N/Acre) |
---|---|
0 - 5 |
90 |
6 - 10 |
68 |
11 - 15 |
45 |
16 - 20 |
23 |
> 20 |
0 |
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
45
|
65
|
90
|
7 - 14
|
0
|
30
|
55
|
15 - 22
|
0
|
0
|
20
|
> 22
|
0
|
0
|
0
|
Add or subtract 1.75 lbs P2O5/cwt. change in yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 18
|
160
|
150
|
140
|
130
|
120
|
19 - 24
|
150
|
140
|
130
|
120
|
110
|
25 - 30
|
140
|
130
|
120
|
110
|
100
|
31 - 36
|
130
|
120
|
110
|
100
|
90
|
37 - 42
|
120
|
110
|
100
|
90
|
80
|
43 - 48
|
110
|
100
|
90
|
80
|
70
|
> 48
|
100
|
90
|
80
|
70
|
60
|
Add or subtract 0.5 lbs N/cwt. change in yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
60
|
80
|
105
|
7 - 14
|
30
|
50
|
75
|
15 - 22
|
0
|
20
|
45
|
> 22
|
0
|
0
|
0
|
Add or subtract 0.2 lbs P2O5/cwt. change in yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
255
|
245
|
235
|
225
|
215
|
7 - 12
|
215
|
205
|
195
|
185
|
175
|
13 - 18
|
175
|
165
|
155
|
145
|
135
|
19 - 24
|
135
|
125
|
115
|
105
|
95
|
25 - 30
|
95
|
85
|
75
|
65
|
55
|
> 30
|
55
|
45
|
35
|
25
|
0
|
Add or subtract 9.0 lbs N/ton change in yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
90
|
110
|
135
|
7 - 14
|
60
|
80
|
105
|
15 - 22
|
30
|
50
|
75
|
> 22
|
0
|
20
|
45
|
Add or subtract 3.0 lbs P2O5/ton change in yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
165
|
155
|
145
|
135
|
125
|
7 - 12
|
145
|
135
|
125
|
115
|
105
|
13 - 18
|
125
|
115
|
105
|
95
|
85
|
19 - 24
|
105
|
95
|
85
|
75
|
65
|
25 - 30
|
85
|
75
|
65
|
55
|
45
|
31 - 36
|
65
|
55
|
45
|
35
|
25
|
37 - 42
|
45
|
35
|
25
|
0
|
0
|
43 - 48
|
25
|
0
|
0
|
0
|
0
|
> 48
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 6.0 lbs N/cwt. change in yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
55
|
75
|
100
|
7 - 14
|
35
|
55
|
80
|
15 - 22
|
0
|
35
|
60
|
> 22
|
0
|
0
|
40
|
Add or subtract 2.0 lbs P2O5/cwt. change in yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
36
|
26
|
16
|
6
|
0
|
7 - 12
|
16
|
6
|
0
|
0
|
0
|
13 - 18
|
0
|
0
|
0
|
0
|
0
|
19 - 24
|
0
|
0
|
0
|
0
|
0
|
25 - 30
|
0
|
0
|
0
|
0
|
0
|
31 - 36
|
0
|
0
|
0
|
0
|
0
|
> 36
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 1.55 lbs N/bushel change in grain yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
20
|
40
|
65
|
7 - 14
|
0
|
20
|
45
|
15 - 22
|
0
|
0
|
25
|
> 22
|
0
|
0
|
0
|
Add or subtract 0.7 lbs P2O5/bushel change in grain yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
36
|
26
|
16
|
6
|
0
|
7 - 12
|
16
|
6
|
0
|
0
|
0
|
13 - 18
|
0
|
0
|
0
|
0
|
0
|
19 - 24
|
0
|
0
|
0
|
0
|
0
|
25 - 30
|
0
|
0
|
0
|
0
|
0
|
31 - 36
|
0
|
0
|
0
|
0
|
0
|
> 36
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 1.15 lbs N/bushel change in grain yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
20
|
40
|
65
|
7 - 14
|
0
|
20
|
45
|
15 - 22
|
0
|
0
|
25
|
> 22
|
0
|
0
|
0
|
Add or subtract 0.5 lbs P2O5/bushel change in grain yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
36
|
26
|
16
|
6
|
0
|
7 - 12
|
16
|
6
|
0
|
0
|
0
|
13 - 18
|
0
|
0
|
0
|
0
|
0
|
19 - 24
|
0
|
0
|
0
|
0
|
0
|
25 - 30
|
0
|
0
|
0
|
0
|
0
|
31 - 36
|
0
|
0
|
0
|
0
|
0
|
> 36
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 1.72 lbs N/bushel change in grain yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
20
|
40
|
65
|
7 - 14
|
0
|
20
|
45
|
15 - 22
|
0
|
0
|
25
|
> 22
|
0
|
0
|
0
|
Add or subtract 1.0 lbs P2O5/bushel change in grain yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
Soil NO3-N Test
|
Soil Organic Matter (%)
|
||||
---|---|---|---|---|---|
0 - 0.5
|
0.6 - 1.0
|
1.1 - 1.5
|
1.6 - 2.0
|
> 2.0
|
|
ppm
|
Fertilizer Rate (lb N/Acre)
|
||||
0 - 6
|
70
|
60
|
50
|
40
|
30
|
7 - 12
|
50
|
40
|
30
|
20
|
10
|
13 - 18
|
30
|
20
|
10
|
0
|
0
|
19 - 24
|
10
|
0
|
0
|
0
|
0
|
> 24
|
0
|
0
|
0
|
0
|
0
|
Add or subtract 2.0 lbs N/bushel change in grain yield goal.
Soil Phosphorus Test
(ppm) |
Fertilizer Phosphorus
(lb P2O5/Acre) |
||
---|---|---|---|
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
|
0 - 6
|
20
|
40
|
60
|
7 - 14
|
0
|
20
|
40
|
15 - 22
|
0
|
0
|
20
|
> 22
|
0
|
0
|
0
|
Add or subtract 0.6 lbs P2O5/bushel change in grain yield goal.
Coarse-textured Soils
|
Medium-textured Soils
|
Fine-textured Soils
|
---|---|---|
Sand, loamy sand, sandy loam
|
Silt, silt loam, loam, and sandy clay
loam
|
Sandy clay, clay loam, silty clay loam,
silty clay, clay
|
|