OVERVIEW
- MOP is commonly used as a potassium (K) source in corn production.
- Micronutrients such as boron (B) are essential to maximize plant growth and yield, but are often overlooked in balanced crop nutrition.
- Aspire® is a superior B delivery source that includes two forms of B to deliver season-long availability and a more flexible application window.
- The fast- and slow-release forms of B within Aspire® provide the corn crop with both early- and late- season needs.
TRIAL DETAILS
Crop: Corn (Zea mays)
Years: 2017–2018
Locations: 29 trials across the following states – DE, IA, IL, IN, KS, MN, MO, MS, ND, NE, OH, PA, SC, SD, TN, WI
Data Source: Field studies conducted by third-party, independent researchers.
Experimental Design: Small-plot RCBD with 4 replications.
Treatments: Control (N+P)
MOP (0-0-60)
Aspire (0-0-58-0.5B)
P Rate: 80 lbs P₂O₅/ac as MAP or DAP
K Rate: 60 lbs K₂O/ac as MOP or Aspire®
Application Timing: Spring Preplant
Application Method: Broadcast incorporated
RESULTS
SUMMARY
- Corn yields increased with the addition of K and B.
- The addition of MOP provided a 3.3 bu/ac yield increase.
- Averaged across 29 site-years, Aspire® with B yielded 5 bu/ac higher than MOP, demonstrating the benefits of uniform nutrient distribution and two forms of boron for season-long boron availability.
