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Home
About
Initiatives
Progress Measurements
Technology Development + Validation
Education + Outreach
Nitrogen Soil Sampling Project
Batch + Build Workshop
Resources
Iowa Nutrient Reduction Strategy Videos
2025 Survey Results
INREC Index
Contact
Guest: Mike Castellano
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Why apply Nitrogen when it’s already in the soil?
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Why does the optimum Nitrogen rate vary from field to field, year to year?
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How does soil sampling affect nitrogen application?
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What is a reasonable Nitrogen rate?
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Nutrient Reduction Loss/N Fact
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