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Sulfur fertilizers are the best fertilizers for canola. The crop in question easily exhibits sulfur deficiencies, particularly on coarse-soiled hilltops and slopes low in eroded and organic matter. It responds far better to ammonium sulfate, ammonium thiosulfate or potassium thiosulfate fertilizers than to elemental sulfur, which breaks down slowly into sulfate-S, or to gypsum (calcium sulfate), which has low solubility and represents more of a handling and spreading challenge.

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7y ago

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