February 2018

MicroEssentials® SZ® vs. MAP Blend


Evaluate the yield response of corn to MicroEssentials® SZ® (12-40-0-10S-1Zn) compared to MAP (11-52-0) + AS (21-0-0-24S) + ZnSO₄ (0-0-0-16S-36Zn).


  • MAP is a common phosphorus (P) fertilizer used in corn-growing regions of North America and is the "base" for many blends.

  • In addition to nitrogen (N), P and potassium (K), corn is very responsive to sulfur (S) and zinc (Zn).

  • MicroEssentials® SZ® contains N, P, S and Zn fused into one nutritionally balanced granule, creating a single course for balanced crop nutrition.


Crop: Corn (Zea mays)

Years: 2008-2013

Locations: 66 trials across the U.S. and Canada
United States: AL, AR, DE, IA, IL, IN, KS, LA, MD, MI, MN, MO, MS, NC, ND, NE, OH, SC, SD, TN, TX and WI
Canada: MB and ON


Data Source: Field studies conducted by university and/or third-party, independent researchers.

Cropping Conditions:

P Rate: 65-90 lbs P₂O₅/ac
– Balanced across all treatments

Zn Rate: MAP blend – 5 lbs Zn/ac




  • MicroEssentials® SZ® outperformed MAP + AS + ZnSO₄ by 4.9 bu/ac (3.0%) on average, across all locations.

  • Access additional yield data, and calculate your ROI potential at MicroEssentials - Performance.

©2020 The Mosaic Company. All rights reserved. AgriFacts, MicroEssentials, SZ, Fusion, Aspire and NutriForm are registered trademarks of The Mosaic Company.

Individual results may vary, and performance may vary from location to location and from year to year. This result may not be an indicator of results you may obtain as local growing, soil and weather conditions may vary. Growers should evaluate data from multiple locations and years whenever possible.