v1.0 (2026-08-23) · Bushong, J., Lofton, J., Sanders, H., and Stamm, M., co-editors. Great Plains Canola Production Handbook. Kansas State University Agricultural Experiment Station and Cooperative Extension Service, MF2734, revised June 2018, pp. 15-16, Tables 8-9.
MF2734 says these tables give general recommendations over a range of soil-test values and directs growers to follow sampling guidance from their state's Cooperative Extension service. To maximize production, take a soil test and solve all deficiencies before planting.
State extension method. Zone Forge computes this source's supported nutrient rates in-app and cites the published method.
Yes — Zone Forge's calculators are free and need no signup. This page shows the states and crops Great Plains Canola Production Handbook (MF2734) covers so you can verify the source behind your recommendation.
Browse the full Coverage Explorer — every state, crop and source — or see the science →