Dave Brandt was probably the longest running no-till farmer in the state; he'd been running his land no-till since 1971. He experimented with fertilizers, cover crops, and different irrigation techniques and he'd been doing all of that for a very long time.
The guy was an institution all on his own; look at this.
The “A” profile in his soil is now 47 inches deep compared to less than 6 inches in 1971 and acts like a giant sponge for water infiltration and retention.
From 1971 through 1989 David used an average of 150-250 pounds of nitrogen fertilizer per acre to grow his corn crops. After adding peas and radishes as a cover crop mix, he cut his nitrogen needs in half and was able to get it down to 125 pounds per acre.
When he added multiple species and became more aggressive with his cover crop mixes, he was able to achieve an additional drop in applied fertility. His starter fertilizer is now just 2 lbs of N, 4 lbs of P, and 5 lbs of K. His corn crop now only requires 20-30 lbs of N throughout the entire growing season. He requires no fertility for his soybeans, relying on fertility gained solely through his cover crops. He uses only 40 lbs of 10 N – 10 P – 10 K for his small grains.
Ten years ago (source study published 2019) David stopped using any fungicides and insecticides. This occurred at a time when fungicide and insecticide use has increased significantly with the average commodity farmer.
Four years ago he stopped using any seed treatment, including neonicotinoids.
His cash crop yields have been increasing by an average of 5% annually for the past 5-6 years, with far less fertilizer and no fungicides, insecticides or seed treatment.
What started as a basic heavy clay soils when David purchased the farm in 1971 have been officially re-classified by Ohio State University soil scientists as a highly fertile silty loam soil.
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