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  1. Ammonia Emission from Animal Feeding Operations and Its Impacts

    https://ohioline.osu.edu/factsheet/AEX-723.1

    50 ppm, increased levels of keratoconjunctivitis 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 ...

  2. Fertility Management of Meadows

    https://ohioline.osu.edu/factsheet/anr-5

    nutrition, forage test to check for adequate levels. When the soil pH is below 5.0, aluminum availability ... critical soil test level of 15-25 parts per million (ppm) phosphorus for Bray P1 test results or 28-40 ppm ... leaching. The critical soil test levels for potassium are 125-200 ppm. Plants have the ability to take up ...

  3. Forage Testing for Beef Cattle

    https://ohioline.osu.edu/factsheet/anr-0149

    0.12% Mg. High soil potassium levels are associated with increased incidence of grass tetany. The ratio ... (ppm). If the forage contains a high level of molybdenum (2 ppm) or sulfur at 0.25%, Cu could be ... samples are low in Zn. The recommended levels for zinc are between 30 and 1,000 parts per million (ppm ...

  4. Effects of Lime and Gypsum Application on Vegetable Yields and Nutrient Availability in Muck Soil

    https://ohioline.osu.edu/factsheet/anr-0102

    to keep organic soils at a target pH of 5.3 to minimize the risk of micronutrient deficiencies ... state that the optimal pH range of muck soils should be between 5.3 and 5.8, depending on the crop ... The application of lime had no effect on soil test phosphorus (P) or potassium (K) values, but the ...

  5. Hot Water and Chlorine Treatments to Eradicate Bacterial Plant Pathogens from Vegetable Seeds

    https://ohioline.osu.edu/factsheet/hyg-5818

    F (50 C), or the temperature indicated for the seed type being tested (see Table 1). Place container in ... may be damaged by hot water. It is highly recommended that a small sample of each seed lot be treated ... and tested for germination (see below) prior to treating the entire lot. Chlorine treatment is easier ...

  6. 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 ...

  7. Cargill, Ohio No-Till Council, and Extension Organizing Field Day – Aug. 15

    https://extops.cfaes.ohio-state.edu/newsletter/news-and-notes/july-15-2024/cargill-ohio-no-till-council-and-extension-organizing-field

    Join Extension, the Ohio No-Till Council, and Cargill RegenConnect® on Aug. 15 for a soil health ... field day at the at the Molly Caren Agricultural Center. Participants will learn about soil health and ... best management practices, experience hands-on soil health demonstrations and cover crop plots, and ...

  8. Chlorinated Water Sanitation of Leafy Green Vegetables For Fresh Produce Processors

    https://ohioline.osu.edu/factsheet/aex-262

    sources to produce 200 ppm chlorinated water. Chlorine gas, stored in high-pressure vessels, can be ... 6.5. In large operations, where high levels of organic material and debris are present on the produce, ... granulated powder 65 or 68% free active chlorine high capital, high operation hazardous due to higher percent ...

  9. Managing Transitions and Change

    https://extops.cfaes.ohio-state.edu/newsletter/news-and-notes/july-15-2024/managing-transitions-and-change

    For many of us, it can feel like transitioning between things is even more difficult than the things ...

  10. Fusarium Head Blight Forecasting System

    https://ohioline.osu.edu/factsheet/plpath-cer-03

    Red indicates high risk for scab exceeding 10% severity, yellow indicates moderate risk, while green ... indicates low risk. High scab risk is associated with high risk for grain contamination with vomitoxin, but ... reducing grain yield, test weight and grain quality. More importantly, F. graminearum produces mycotoxins, ...

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