The macronutrient potassium (K+) is required in large amounts by canola, similar to nitrogen. In spite of the large requirement, canola yield responses to potassium fertilizer (potash) are infrequent, due to ample soil potassium reserves on most prairie soils, and canola’s strong ability to absorb potassium. Responses to potassium fertilizer are more likely on lighter-textured…
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