OVERVIEW
- MAP (11-52-0) is commonly used as a phosphorus (P) source and applied with the seed in winter wheat cropping systems.
- In addition to nitrogen (N) and P, other nutrients like sulfur (S) and zinc (Zn) are beneficial to achieve maximum yield.
- MicroEssentials SZ (12-40-0-10S-1Zn) is a dry granular fertilizer that provides uniform nutrient distribution, increased nutrient uptake, and two forms of S (sulfate + elemental) for season-long availability.
TRIAL DETAILS
Locations and Crop Management:
CROP: Wheat (Triticum Aestivum)
YEARS: 2017-2019
DATA SOURCE: Field studies conducted at university sites by Kansas State University.
EXPERIMENTAL DESIGN: Small-plot RCBD with 4 replications.
Treatments:
- MAP (11-52-0) • MicroEssentials SZ (12-40-0-10S-1Zn) N
Rate: Followed local recommendations and was balanced across all treatments.
P Rate: 40 lbs P2O5./ac as MAP or MicroEssentials SZ.
S Rate: 10 lbs S./ac from MicroEssentials SZ. Zn Rate: 1 lb Zn./ac from MicroEssentials SZ.
Application Details: Cropping systems followed local practices. Fertilizer was placed in-furrow with the seed to simulate large-scale air-drill applications.
SUMMARY
- Winter wheat yields increased with the addition of sulfur and zinc.
- Averaged across 9 site-years, MicroEssentials SZ applied at 100 lbs product/ac outperformed MAP by +4.1 bu/ac.
- MicroEssentials SZ applied with the seed at planting provides superior performance to the traditional practice of only applying MAP.
