MAP is commonly used as a phosphorus (P) source in corn-growing regions of North America.
Fall applications of MAP may be preferred in certain cropping systems to evenly distribute seasonal workload, but spring applications are also a common practice in the Midwest.
Recent environmental concerns have highlighted the need to better understand the yield performance of dry granular fertilizer applications in banded situations.
Banded fertilizer applications have been shown to increase fertilizer efficiency and yields while reducing environmental P losses.
MicroEssentials® SZ® contains four nutrients fused into one nutritionally balanced granule to promote uniform nutrient distribution, improved nutrient uptake and increased yield.
Locations and Crop Management:
Crop: Corn (Zea mays)
Locations: LOCATIONS: 9 trials across the United States – IL, IN, MN, NE
Data Source: Field studies conducted by third-party, independent researchers.
Experimental Design: Small-plot RCBD with 4 replications.
N Rate: Fall treatments received partial nitrogen (N) in the fall to balance for phosphate applications, with the remaining N applied in the spring. (Total N rates were based on local recommendation.)
P Sources: MAP, MicroEssentials® SZ®
P Rate: 80 lbs P₂O₅/ac
K Rate: As required by soil test
Application Timing: Fall or spring preplant
Application Method: Banded 4"-6"
MicroEssentials® SZ® had the highest yield in both fall and spring applications.
MicroEssentials® SZ® yields were 5.8 bu/ac (2.6%) higher than MAP with the fall application.
MicroEssentials® SZ® yields were 6.7 bu/ac (2.9%) higher than MAP with the spring application.
Regardless of fall or spring application, a banded application of MicroEssentials® SZ® is a superior technology for improving nutrient use efficiency.