Search results
Search results
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Nitrogen
https://agcrops.osu.edu/node/3482
The profitability of crop production is highly dependent on proper nitrogen (N) management, as N fertilizer represents a large fraction of the total cost of production. Unfortunately, N is the one of the most challenging nutrients to manage in field crops ...
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Soil Sampling, Handling, and Testing
https://agcrops.osu.edu/node/3484
The accuracy of a fertilizer recommendation depends on the quality of the soil sample collected and analyzed to produce a soil test value. Taking the time to collect a quality soil sample is the first and perhaps most important step in developing a sound ...
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Executive Summary
https://agcrops.osu.edu/node/3486
The Tri-State Field Crop Fertilizer Recommendations for Indiana, Michigan, and Ohio have been revised and updated. Extensive research station and on-farm trials have been conducted over the past decade to validate and refine the guidelines. In general, th ...
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Quick Reference Guide to Tri-State Fertilizer Recommendation Changes
https://agcrops.osu.edu/node/3488
What has changed? Why the change? Soil Sampling Sample every 3 to 4 years in a consistent way as the foundation for an adaptive nutrient management program. No changes. Details Soil pH and Lime Recommendations Michigan and Indiana liming recommendations a ...
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Soil PH and Lime Recommendations
https://agcrops.osu.edu/node/3483
Soil pH is one of the most important properties in determining the cycling and availability of soil nutrients. Soil testing regularly and applying lime to maintain recommended pH levels should be the first step growers take to assure crops have sufficient ...
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Calcium, Magnesium, and Sulfur
https://agcrops.osu.edu/node/3477
Calcium (Ca), magnesium (Mg), and sulfur (S) are the three secondary nutrients required by plants, but less likely to be added as fertilizer as N, P or K. Most soils in Indiana, Michigan, and Ohio adequately supply these nutrients for plant growth. A stan ...
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Micronutrients
https://agcrops.osu.edu/node/3476
Micronutrients are essential plant nutrients that are found in trace amounts in tissue but play a vital role in plant growth and development. Of the 17 elements essential for plant growth, eight are micronutrients: boron (B), chlorine (CI), copper (Cu), i ...
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Phosphorus and Potassium
https://agcrops.osu.edu/node/3478
Build-up and Maintenance Framework The tri-state fertilizer recommendations for P and K are based on a build-up and maintenance approach. This framework strives to build soil test levels up to and beyond a critical level, then maintain these levels over t ...
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Potassium Fertilizer Recommendations
https://agcrops.osu.edu/node/3480
Quick reference tables, rounded to the nearest 5 pounds, are provided for corn, soybean, wheat, corn silage, and alfalfa for potassium below. Potassium recommendations differ for sandy soil (CEC <5 meq/100g) and loam and clay soils (CEC >6 meq/ 100g ...
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Phosphorus Fertilizer Recommendations
https://agcrops.osu.edu/node/3479
Quick reference tables, rounded to the nearest 5 pounds, are provided for corn, soybean, wheat, corn silage, and alfalfa for phosphorus. Note the equations and quick tables provide recommendations for pounds of P 2 O 5 per acre, not pounds of fertilizer p ...