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Low-Medium Yield Potential Soils
| CROP | NITROGEN | PHOSPHORUS (P2O5) |
|---|---|---|
|
Grass
Seed
| 30 – 60 | 10 – 25 |
|
Forage 20% Legume
40 – 90
| 10 – 30 | |
|
Grass-Legume
20-40% Legume
| 30 – 65 | 20 – 30 |
|
40-60% Legume
10 – 30
| 20 – 40 | |
|
Legume
Greater than 60% Legume
| 0 – 30 | 30 – 50 |
Medium-High Yield Potential Soils
| CROP | NITROGEN | PHOSPHORUS (P2O5) | POTASSIUM(K2O) | SULPHUR |
|---|---|---|---|---|
|
Grass
Seed
| 30 – 70 | 10 – 30 | 30 – 50 | 0 – 10 |
|
Forage 20% Legume
60 – 100
| 10 – 30 | 50 – 60 | 10 – 15 | |
|
Grass-Legume
20-40% Legume
| 40 – 90 | 20 – 40 | 50 – 70 | 15 – 30 |
|
40-60% Legume
20 – 40
| 30 – 40 | 50 – 80 | 15 – 30 | |
|
Legume
Greater than 60% Legume
| 0 – 30 | 40 – 70 | 60 – 150 | 15 – 30 |
High Yield Potential Soils
| CROP | NITROGEN | PHOSPHORUS (P2O5) | POTASSIUM(K2O) | SULPHUR |
|---|---|---|---|---|
|
Grass
Seed
| 45 – 100 | 30 – 50 | 40 – 60 | 0 – 15 |
|
Forage 20% Legume
60 – 200
| 30 – 50 | 40 – 60 | 0 – 15 | |
|
Grass-Legume
20-40% Legume
| 60 – 80 | 40 – 60 | 60 – 80 | 15 – 20 |
|
40-60% Legume
0 – 60
| 40 – 80 | 80 – 150 | 15 – 30 | |
|
Legume
Greater than 60% Legume
| 0 – 50 | 60 – 100 | 80 – 200 | 20 – 30 |
*Residual response to the higher rates may persist for two years, particularly when the year of apllication is dry and production is low. Therefore annual application may not always be necessary.
Source: Adapted from various U.S State and Canadian Prairie Province Extension Bulletins.