Skip to Main Content
AB BC MB NB ON PE QC SK AL AR AZ CA CO CT DC DE FL GA IA ID IL IN KS KY LA MA MD ME MI MN MO MS MT NC ND NE NH NJ NM NV NY OH OK OR PA RI SC SD TN TX UT VA VT WA WI WV WY NS

Personalize your experience

Create an enhanced site experience specific to your needs by providing your region and crop.

To begin, select on the map where your farm is located.

You're located in the

Select your desired crop

    Enjoy an enhanced site experience tailored to growing in the

    Scroll Select

    Phosphorus Uptake in Corn – AgriFacts

    8.6 BU/AC

    Corn yield increase compared to conventional MAP blend

    Download PDF

    Objective

    Evaluate the yield response and phosphorus uptake of MicroEssentials® SZ® (12-40-0-10S-1Zn) compared to MAP (11-52-0) and a MAP + AS (21-0-0-24S) + ZnSO₄ (0-0-0-16.5S-36Zn) blend in spring broadcast applications.

    OVERVIEW

    • Corn removes 0.35 lb P₂O₅ per bushel of harvested grain (IPNI: Table 4.5, April 2014). Along with phosphorus, corn needs other nutrients in a proper ratio to achieve peak nutrient use efficiency and maximum yield.
    • MAP is commonly used as a phosphorus source in corn-growing regions of North America. Ammonium sulfate (AS) and zinc sulfate (ZnSO₄) are often blended with MAP to provide sulfur and zinc.
    • Through Mosaic’s proprietary Fusion® technology, MicroEssentials® SZ® contains N-P-S-Zn fused into one nutritionally balanced granule, creating a single source for balanced crop nutrition and promoting more uniform nutrient distribution.
    • The chemical composition of MicroEssentials® SZ® provides a slight pH reduction in a microsphere around the fertilizer granule, and offers more phosphorus in the form preferred by crops (dihydrogen orthophosphate).

    TRIAL DETAILS

    Crop: Corn (Zea Mays)

    Year: 2012-2013

    Locations: 14 locations across the U.S. United States – AR, IL, KS, MI, MN, ND, NE, OH, TN, VA

    Data Source: Field studies conducted by third-party, independent researchers.

    Experimental Design: Small-plot RCBD with 4 replications

    Cropping Conditions:

    P Rate: 90 lbs P₂O₅/ac

    K Rate: As required by soil test

    S Rate: 22.5 lbs S/ac

    Zn Rate: 2.25 lbs Zn/ac

    Application Timing: Preplant

    Application Method: Broadcast incorporate

    Tissue Sampling: Whole-plants samples collected at V6–V8 were used for P concentration and uptake.


    RESULTS


    SUMMARY

    • With MicroEssentials® SZ®, phosphorus uptake increased by 0.9 lb P₂O₅/ac over MAP and 0.4 lb P₂O₅/ac over the MAP + AS + ZnSO₄ blend.
    • Averaged across 2 years and 14 trials, MicroEssentials® SZ® outyielded MAP by 9.4 bu/ac (4.6%).
    • Averaged across these same years and locations, MicroEssentials® SZ® outyielded the MAP + AS + ZnSO₄ blend by 8.6 bu/ac (4.2%).
    • These results show the increased P uptake and yield that can be achieved when MicroEssentials® SZ® is applied compared to MAP or a conventional MAP blend.