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Fertilization
https://agcrops.osu.edu/node/4389
before planting when the soil-test level is below 50 ppm. Recommendations are determined by yield goal ... removal). Yield Potential (bu/ac) Soil CEC Soil-Test K (ppm) 25 50 75 100 125 150 175 60 lb ... ―Both Grain and Straw Removed. Yield Potential (bu/ac) Soil CEC Soil-Test K (ppm) 25 50 75 100 125 150 ...
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Soils and Soil Health
https://ohioline.osu.edu/factsheet/anr-0136
nutrients air—2%–50% of soil volume oxygen, carbon dioxide, nitrogen occupies same spaces between soil ... bad, or mid-level soil test results to compare against. The Ohio State University has conducted a vast ... nutrients—aka “potential for productivity” water—2%–50% of soil volume water-holding capacity is directly ...
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Fertilization Recommendations
https://agcrops.osu.edu/node/4348
Magnesium (Mg) Soybeans require a minimum exchangeable soil test level of 200 and 50 ppm (400 and 100 ... Recommendations for Soybeans. Yield Potential (bu/ac) Soil test (Bray P) 30 40 50 60 70 ppm (lb/ac) ... Cation Exchange Capacities (CECs) and Soil-Test Levels. Yield Potential bu/ ac 30 40 50 60 ...
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Fertility Recommendations
https://agcrops.osu.edu/node/4423
surface residues are high. Soils that have moderate to high levels of soil test phosphorus and potassium ... current soil test levels. Considering it takes between 8 to 20 pounds of P2O5 and 5 to 10 pounds of K2O ... benefit of starter fertilizers increases when soil test levels and soil temperatures are low and when soil ...
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Developing Phosphorus and Potassium Recommendations for Field Crops
https://ohioline.osu.edu/factsheet/agf-0515
determined using field studies to correlate soil test levels to crop yield response. Ohio data was used to ... This framework strives to build soil test levels up to and beyond a critical level, and then maintain ... these levels over time. The critical level is a key component to this framework. Soil test levels above ...
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Interested in Soil Health? Learn together with OSU Extension
values. In general, soil test levels were in optimal ranges for grain crops in Ohio (Culman et al., 2020). ... and ultimately crop yields. OSU Extension has worked to identify a few soil tests that can provide ... helpful indicators of improved soil health. Though several health tests exist, we focused on tests that ...
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Production of Other Small Grain Species
https://agcrops.osu.edu/node/4396
160 Rye 30 45 60 Soil Test Value Annual Recommendation (lb P2O5/ac) lb P/ac ppm 30 15 ... -------------CEC--------------------------CEC--------------------------CEC------------- Soil Test Value 10 20 30 10 20 30 10 20 30 lb K/ac ppm-----------------------------Annual ... Recommendation (lb K2O/ac)---------------------------- 50 25 150 190 230 160 195 240 165 255 300 150 75 75 ...
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Spring Weather & Soil Conditions: Update 7 (Final)
50s. Soil Temperature; Weather Conditions ... Soil Temperatures and Moisture Air temperatures in Ohio ran 2-5°F below average over the last ... 18 th, with unofficial reports as low as 26°F in Sandusky County. Daily average soil temperatures ...
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Spring Weather & Soil Conditions: Update 6
https://agcrops.osu.edu/newsletter/corn-newsletter/2023-14/spring-weather-soil-conditions-update-6
the upper 50s for daily average 2” and 4” soil temperatures. The rest of the state shows temperatures ... Soil Temperatures and Moisture Figure 1: Daily average air temperature (dashed red), two-inch ... (green) and four-inch (blue) soil temperatures for spring 2023. Soil type and location of measurements ...
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Understanding How Soil Test Phosphorus Impacts Water Quality
https://ohioline.osu.edu/factsheet/anr-0111
Soil test P is one indicator of environmental P loss potential from a field. STP values above 100 ppm ... Tests as Risk Indicators for Leaching of Dissolved Phosphorus from Agricultural Soils in Ontario. Soil ... called eutrophication, results in depleted dissolved oxygen in water bodies. A soil test for P (STP) ...