Quantify the increase of phosphorus uptake with MicroEssentials® SZ® (12-40-0-10S-1Zn) applied
to corn compared to MAP (11-52-0) and MAP + Ammonium Sulfate (AS, 21-0-0-24S) + Zinc Sulfate (ZnSO₄ ,17.5-0-0-35.5Zn) blends in V6 corn.
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).
Evaluate the yield response of spring wheat to MicroEssentials® SZ® (12-40-0-10S-1Zn) compared to MAP (11-52-0) + AS (21-0-0- 24S) and MAP.
Evaluate the yield response of corn to MicroEssentials® SZ® (12-40-0-10S-1Zn) compared to MAP (11-52-0)
Evaluate the yield response of canola to MicroEssentials® S15® (13-33-0-15S) compared to MAP (11-52-0) + AS (21-0-0-24S) and MAP.
Evaluate the yield response of spring wheat to MicroEssentials® S15® (13-33-0-15S) compared to MAP (11-52-0) + AS (21-0-0- 24S) and MAP.
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.
Record yields equal record removal of nutrients and should indicate a need for record soil nutrient replenishment.
Scientists from Arizona State University compared fluid ammonium polyphosphate (10-34-0) applied in irrigation water with granular monoammonium phosphate (MAP) broadcast and irrigated into the soil as phosphorous (P) sources for high-yield alfalfa (eight cuttings per year) and to study movement and availability of P in a calcareous soil.
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).
Corn Summaries
Monoammonium phosphate (MAP) is a widely used source of phosphorus (P) and nitrogen (N).*