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Sunflower fertilizer guidelines

Sunflower will respond to fertilization. Nitrogen, phosphate, and potash are important. The tables that follow list appropriate recommendations.

Nitrogen

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Phosphate, potash and other nutrients

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CAUTION! Do not apply more than 10 lb N + K2O per acre in contact with the seed. Do not place ammonium thiosulfate (12-0-0-26) in direct contact with the seed. Do not place fertilizers containing boron in direct contact with the seed.

Daniel E. Kaiser, Extension nutrient management specialist

Reviewed in 2018

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