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Performance You Can Count On, Year After Year.

Providing results across a variety of crops and soil conditions, K-Mag fertilizer leads to high quality crops, and ultimately, higher yields.

See The Difference K-Mag Can Make For Your Operation.

Which Crop Do You Grow?

See The K-Mag Difference.

Browse our trial results and video comparison videos to see how K-Mag boosts plant health and leads to higher yields. AgriFacts® are a series of fact sheets that summarize the results of trials conducted by the Mosaic agronomy team and research partners. Each AgriFact evaluates various agronomy topics, measuring results of K-Mag compared to other fertilizer options.