Evaluate onion marketable yield response to MAP, MicroEssentials® SZ® + MOP, and a combination of MicroEssentials SZ + Aspire®.
Evaluate onion marketable yield response to MAP (11-52-0), MAP + MOP (0-0-60) and MAP + MOP + K-Mag® Premium (0-0-21.5-10.5Mg-21S).