Each year the Nutrient Management Initiative (NMI) reports the results of the past season's on-farm field trials. Org
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Knotweed Brochure1.42 MB
Knotweed Brochure1.42 MB
Summary
Despite drier than normal conditions in portions of the southeast and south west, USDA NASS showed the 2022 crop year was met with corn yields ahead of the previous season here in Minnesota. This same trend was largely reflected in the NMI data, with higher than previous season average yields across treatments in three of the four regions where trials were performed.
Across the state, the average low nitrogen rate treatment was 151 lbs N/ac, which resulted in an average yield of 209 bu/ac. The average high nitrogen rate treatment (typical for the farmer doing the trial) was 188 lbs N/ac, which resulted in an average yield of 214 bu/ac. Of the 48 individual trial locations, 32 (67%) showed a no significant difference between resulting treatment yields – meaning reducing the N application rate did not negatively impact yield.
The most popular fertilizer product across the state was urea or urea with other products (e.g., ammonium sulfate) applied in the same time window. That said, anhydrous ammonia was the primary N source on the largest number of trials in the Southwestern region (33% of trials), and urea ammonium nitrate (UAN – 28%) was the primary nitrogen source on the largest number of trials in the South Central region (43% of trials).
Full Report
The full report is included in the Minnesota Digital Water Resource Library.
2022 NMI Report
Summary
Despite drier than normal conditions in portions of the southeast and south west, USDA NASS showed the 2022 crop year was met with corn yields ahead of the previous season here in Minnesota. This same trend was largely reflected in the NMI data, with higher than previous season average yields across treatments in three of the four regions where trials were performed.
Across the state, the average low nitrogen rate treatment was 151 lbs N/ac, which resulted in an average yield of 209 bu/ac. The average high nitrogen rate treatment (typical for the farmer doing the trial) was 188 lbs N/ac, which resulted in an average yield of 214 bu/ac. Of the 48 individual trial locations, 32 (67%) showed a no significant difference between resulting treatment yields – meaning reducing the N application rate did not negatively impact yield.
The most popular fertilizer product across the state was urea or urea with other products (e.g., ammonium sulfate) applied in the same time window. That said, anhydrous ammonia was the primary N source on the largest number of trials in the Southwestern region (33% of trials), and urea ammonium nitrate (UAN – 28%) was the primary nitrogen source on the largest number of trials in the South Central region (43% of trials).
Full Report
The full report is included in the Minnesota Digital Water Resource Library.
