Soil Fertility Guide
Appendix
Fertilizer Guidelines for Soil Tests
The following recommendation tables listed in the Appendix should be used as a guide to fertilization rates. These guidelines are not intended to supercede provincial laws or to serve as application limits.
The guidelines in the following tables have been based on field research in Manitoba. Some guidelines have not been revised since 1990 due to lack of supporting field data. Development of new or validation of existing nitrogen guidelines have been done since 2000 for winter wheat, oats, flax, corn, dry beans, potatoes and forage grasses. Revisions are under development for spring wheat, barley and canola.
Nitrogen recommendations(based on spring broadcast application)
- Hard red spring wheat
- CPS and feed wheat
- Hard red winter wheat
- Feed barley
- Malting barley
- Oats
- Canola
- Flax
- Corn
- Sunflowers
- Buckwheat
- Dry Field Beans
- Potatoes
- Forage Grasses and Export Timothy Hay
- Smooth Bromegrass Hay
- Intermediate Wheatgrass Hay
Field Crops
Micronutrient
- Soil test criteria for micronutrient fertilizer use
- Common methods of applying generalized categories of micronutrient products on the prairies
Nitrogen should be applied in split applications rather than entirely at planting.
For further information, contact your Manitoba Agriculture Representative.