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MicroEssentials® SZ® Phosphorus Uptake (Greenhouse Trial) vs DAP and DAP Blend in V6 Corn

Quantify the increase of phosphorus uptake with MicroEssentials® SZ® (12-40-0-10S-1Zn) applied to corn compared to DAP (18-46-0) and DAP + Ammonium Sulfate (AS, 21-0-0-24S) + Zinc Sulfate (ZnSO₄,17.5-0-0-35.5Zn) blends in V6 corn.

MicroEssentials® SZ® vs. DAP Blend

Evaluate the yield response of corn to MicroEssentials® SZ® (12-40-0-10S-1Zn) compared to DAP (18-46-0) + AS (21-0-0-24S) + ZnSO₄ (0-0-0-16S-36Zn).

MicroEssentials® SZ® vs. DAP

Evaluate the yield response of corn to MicroEssentials® SZ® (12-40-0-10S-1Zn) compared to DAP (18-46-0).

MicroEssentials® S10® vs. DAP

Evaluate the yield response of corn to MicroEssentials® S10® (12-40-0-10S) compared to DAP (18-46-0).

It's Time to Reevaluate Canola P Fertility!

Are you seed-placing your phosphorus (P) and basing application rates on seed safety rather than crop requirements? You may be leaving yield on the table. Recent research out of the University of Manitoba examining seed-safe rates of P and sulfur (S) in canola is showing that P applied at rates based on seed safety may not be adequate to maximize canola yields.

The Impact of High Yields on Deficient Soils

Record yields equal record removal of nutrients and should indicate a need for record soil nutrient replenishment.


MAP as a Starter Fertilizer for Corn

Monoammonium phosphate (MAP) and diammonium phosphate (DAP) are excellent sources of phosphorus (P) and nitrogen (N) for high-yield, high-quality crop production. Research trials at 42 field sites in seven Corn Belt states showed an average corn yield of 162 bushels per acre with MAP and 159 with DAP. MAP (11-52-0) and DAP (18-46-0) contain about 90 percent water-soluble P, which is well above the 60 percent needed for optimum crop growth.


High-Yield Potatoes Have High Nitrogen and Potassium Needs

Potatoes are grown in nearly every state in the U.S., with sales in excess of $3 billion. Yield, tuber size and specific gravity (dry-matter content) influence quality factors such as frying properties and flavor. Fertility management decisions can influence these as well as storage properties.


Phosphate Source Selection

When it comes to phosphate source selection, the menu is a good one. It contains liquid sources, such as the polyphosphates 10-34-0 and 11-37-0; and granular sources such as monoammonium phosphate (also called MAP, which is 11-52-0) and diammonium phosphate (also called DAP, which is 18-46-0).


Agronomic Field Results: MAP vs. DAP, 2002 to 2005

Corn Summaries


Diammonium Phosphate

Diammonium phosphate (DAP) is the world’s most widely used phosphorus fertilizer. It’s made from two common constituents in the fertilizer industry, and its relatively high nutrient content and excellent physical properties make it a popular choice in farming and other industries.