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Converting between Mehlich-3, Bray P, and Ammonium Acetate Soil Test Values
https://ohioline.osu.edu/factsheet/anr-75
Bray P. When only soil test values in the agronomic range were considered (less than 50 ppm Bray P), ... relationships between Mehlich-3, Bray P, and Ammonium Acetate soil test extractants in the Tri-State Region. ... 3–1170 ppm, and Mehlich-3 K values ranged from 25–899 ppm. We examined relationships with all soil test ...
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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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Corn Silage Ear Rot and Foliar Disease Management
a high disease pressure with DON levels as high as 17.9 ppm in one hybrid and 30.3 ppm in the other ... leaf spot is favored by warm temperatures between 70 and 90°F and high relative humidity. Northern corn ... nutritionists encouraging levels below 1 ppm in corn utilized in the lactating ration. Fungicides may have the ...
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ANR-841-2E: Tobacco Sucker Control
https://ohioline.osu.edu/factsheet/anr-0841-2e
that have a longer duration between topping and harvesting. However, individual burley varieties may ... long. When To Use Before a systemic sucker-control chemical is used, plants should be topped when 50% or ... in the past discouraged purchases of burley tobacco by foreign buyers. Experiment station field tests ...
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Grapevine Nutrient Management: Petiole Sampling and Analysis
https://ohioline.osu.edu/factsheet/hyg-1438
availability. However, there is a poor relationship between soil and plant nutrient levels. While a soil may be ... adequate levels of another nutrient while the soil test indicates a deficiency. This poor relationship may ... Manganese (Mn) 25–1,000 ppm 3 31–150 ppm Iron (Fe) 30–100 ppm 31–50 ppm Copper (Cu) 5–15 ppm 5–15 ppm Boron ...
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Gibberella Ear Rot and Mycotoxins in Corn: Sampling, Testing, and Storage
https://ohioline.osu.edu/factsheet/AC-52
screening steps. Semi-quantitative tests estimate vomitoxin at or above certain levels (>5 ppm) or within ... (DON), also called vomitoxin. As a result, high levels of Gibberella ear rot severity and moldy grain are ... usually accompanied by high levels of vomitoxin. Mycotoxins are harmful to both humans and animals. ...
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Wreaths for Our Veterans Ceremony
https://mahoning.osu.edu/events/wreaths-our-veterans-ceremony-0
generations about the high cost of our freedoms. Please help us continue this tradition by joining ...
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Abnormal Ears in Corn—When and Why Do They Develop?
https://ohioline.osu.edu/factsheet/anr-0139
reducing productivity and spurring research about the underlying causes. Distinct differences exist between ... fields averaged 26% of abnormal ears, with abnormal ear production ranging between 12 and 49% (that is 12 ... conditions driven by unfavorable growing conditions (environment), susceptible hybrids (genetics), high or ...
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Ammonia Emission from Animal Feeding Operations and Its Impacts
https://ohioline.osu.edu/factsheet/AEX-723.1
50 ppm, increased levels of keratoconjuctivitis and tracheitis have been observed. These trachea and ... causes high ammonia levels inside animal production buildings, especially in winter months when the ... concentrations. People begin to detect odors at 5–50 ppm. Irritation to mucous surfaces occurs at 100–500 ppm ...
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Partners Gather to Kickoff Pilot Watershed Project
https://fabe.osu.edu/news/partners-gather-kickoff-pilot-watershed-project
quality changes in a productive agricultural watershed. The project will evaluate soil health, nutrient ... Bowling Green State University will lead research to examine soil health in the watershed and identify ... project. Doug Deardorff, resource conservationist with Hardin Soil and Water Conversation District serves ...