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Phosphorus Nutrient Management for Yield and Reduced P Loss at Edge of Field
https://ohioline.osu.edu/factsheet/agf-509
site and rate criteria from Assessing Nutrient Loss Risk in Ohio (NRCS) between 50 to 200 PPM. Time ... step 7. STP value of 50 PPM Mehlich III or less: CROP YIELD —Reduce risk of crop yield losses with ... available. The maintenance STP range is "critical level" to 40 PPM in corn soybean rotation and 50 ...
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Potassium Uptake and Ohio Crop Response
https://ohioline.osu.edu/factsheet/anr-0147
a measure of the risk of yield loss at a given soil-test K level without fertilizer applied during the ... total K content of Ohio soils is between 12,500 ppm and 30,500 ppm (Ames & Gaither, 1913). Even ... yield. For loams and clays, this would be 170 ppm; for sandy soils, it is 130 ppm. The range of soil test ...
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Fertilizer and Manure Regulations in the Lake Erie Western Basin Watershed
https://ohioline.osu.edu/factsheet/anr-0156
fertilizers containing nitrogen (N) and phosphorus (P) in the Western Lake Erie Basin under certain soil and ... snow-covered or frozen soil when the top 2 inches of soil are saturated from precipitation in granular form, ... and when the local weather forecast has a greater than 50% chance of precipitation exceeding 1 inch in ...
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Footbath Practices for Lameness Prevention
5% due to risk of chemical burn. Formalin is not as effective at temperatures below 50° F, and open ... angle. These high walls ensure cattle are getting their feet in the treatment. One side should be ... Footbaths are effective for approximately 150 to 350 cow passes. Barns with automated manure removal and ...
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Fall Forage Management
https://dairy.osu.edu/newsletter/buckeye-dairy-news/volume-26-issue-4/fall-forage-management
K 2 O. The recommended soil test ranges for phosphorus and potassium are 30 to 50 ppm and 120 to 170 ppm ... a high level of precision between sampling years so that you can accurately track your progress. Whether ... growth in the spring. We have to begin any soil discussion with a reminder to soil test. As you implement ...
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New Pesticide Applicator Training
https://mahoning.osu.edu/events/new-pesticide-applicator-training-1
will discuss study tips, common questions and test day preparation strategies. Cost: $25 per ...
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Nutrient Removal for Field Crops in Ohio
https://ohioline.osu.edu/factsheet/anr-96
manure equivalent at crop removal rates. Additionally, if soil test levels of P and K are below the ... critical level, then a "Buildup" recommendation would be considered to increase soil test levels ... soil test levels are at or above their respective maintenance limit, then no further P 2 O5 or ...
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Interpreting a Soil Test Report
https://ohioline.osu.edu/factsheet/agf-0514
suitability to grow a chosen crop. Phosphorous and potassium soil test levels help us know if fertilizer is ... values is needed if they are not reported as ppm using a Mehlich 3 soil test. Soil test values reported ... in pounds per acre are converted to ppm by dividing pounds per acre by 2. If phosphorus soil test ...
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Soil Phosphorus and Crop Response to Phosphorus Fertilizer in Ohio
https://ohioline.osu.edu/factsheet/anr-0146
responding to applied P can best be predicted by soil-test P levels. Recently, Culman et al. (2023) published ... 29.9% of trials, soybean in 14.2% of trials, and wheat in 36.8% trials. Critical soil test levels ranged ... Furthermore, the risk of yield loss with no P application decreased as the soil P level increased. As per the ...
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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 ...