- Monoammonium phosphate (MAP) is commonly used as a P fertilizer applied to winter wheat.
- In addition to nitrogen (N) and P, other nutrients like S and Zn are beneficial to achieve maximum yield and better nutritional quality.
- MicroEssentials SZ contains N, P, S and Zn in one nutritionally balanced granule, providing the uniform nutrient distribution, improved nutrient uptake and season-long sulfur availability required for higher yields and profitability.
CROP: Winter Wheat (Triticum aestivum, winter)
YEARS: 2012–2014 CROPPING CONDITIONS:
- P Sources: MAP, MAP + AS + ZnSO4 and MicroEssentials SZ
- P Rate: MAP and MicroEssentials SZ: 0, 30 and 60 lbs P2O5/ac MAP + AS + ZnSO4: 60 lbs P2O5/ac
- K Rate: As required by soil test, applied to entire trial
- Application Timing: Preplant
- Application Method: Broadcast
- Grain yield
- Grain nutrient concentration P, S, Zn (12 of 17 locations)
- At 60 lbs P2O5/ac, MicroEssentials® SZ™ had a 4.2 bu/ac (6.0%) higher yield than MAP and 2.5 bu/ac (3.5%) higher yield than the MAP blend.
- The 30 lbs P2O5/ac of MicroEssentials SZ outperformed the 60 lbs P2O5/ac rate of MAP and the MAP blend. This demonstrates the increased P efficiency of MicroEssentials SZ compared to MAP.
- Grain nutrient concentrations were higher in MicroEssentials SZ treatments than MAP or MAP blend treatments. Compared to MAP, MicroEssentials SZ demonstrated the following increases: 3.8% for P, 4.1% for S and 2.4% for Zn.
- MicroEssentials SZ demonstrated higher yield and grain nutrient concentration compared to MAP or a MAP blend. Applying MicroEssentials SZ results in maximum yield and increased nutrient efficiency.