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  1. Role of Soil Bacteria

    https://ohioline.osu.edu/factsheet/anr-36

    at high soil pH levels (Ingham, 2009). Actinomycetes are important in forming stable humus, which ... µm). A teaspoon of productive soil generally contains between 100 million and 1 billion bacteria. That ... particles (<.2 µm) and silt soil particles (2-50 µm). They grow and live in thin water films around soil ...

  2. Short Season Corn vs. Commonly Grown Corn Hybrid Maturities for Planting in Ohio 

    https://ohioline.osu.edu/factsheet/anr-94

    contrasts are presented. Values for the comparisons denote the difference between tested variables (first ... comparisons denote the difference between tested variables (first named minus second named). An asterisk ... hybrids ($770/A) due mainly to discounts from low test weights and high harvest moisture (Table 4). ...

  3. Conducting a SWOT Analysis of Your Agricultural Business

    https://ohioline.osu.edu/factsheet/anr-42

    opportunities align with a high probability of success. Conversely, you will also identify combinations of ... Ohio State University Extension from the North Central Risk Management Education Center, 2006-2007. It ...

  4. Corn Growing Degree Days: A Method of Maturity Rating for Hybrids

    https://ohioline.osu.edu/factsheet/agf-101

    different scenarios; it provides county-level estimates based on historical GDDs accumulation, planting ... calculated in several ways, the most used method is to subtract 50 degrees Fahrenheit from the mean daily ... temperature. This method of calculating GDD is often called the “86/50 corn system.” This GDD calculation ...

  5. Soil Terminology and Definitions

    https://ohioline.osu.edu/factsheet/SAG-19

    of soil antecedent biological activity. A high BR generally indicates higher soil microbial activity, ... accumulation in the soil. This index can be used as an early and sensitive indicator of carbon or soil organic ... and macropores leading to soil compaction and decreased soil organic matter levels. Soil compaction ...

  6. Effects of Flooding and Ponding on Corn

    https://ohioline.osu.edu/factsheet/agf-118

    respectively, at a low nitrogen fertilizer level (50 lb N per acre). At a high level of nitrogen (350 lb N per ... the duration of flooding and air/soil temperatures. Prior to the 6-leaf stage (when the growing point ... is near or at the soil surface), corn can survive only 2 to 4 days of flooded conditions. Once corn ...

  7. Use of a Brown Mid-Rib Sorghum x Sudangrass Hybrid in a Small Ruminant Parasite Control Program

    https://ohioline.osu.edu/factsheet/VME-30

    Critical levels of soil phosphorus and potassium are 15 ppm and 100 to 120 ppm respectively. Similar to ... are between 60 and 65°F. At these soil temperatures, the seed will germinate  quickly and a dense ... stand will be established. Although sorghum x sudangrass will tolerate soil pH levels of 6.0 and lower, ...

  8. 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 ...

  9. Growing Onions in the Garden

    https://ohioline.osu.edu/factsheet/hyg-1616

    sandy-loam to silt-loam soils soil with plenty of organic matter. Onions are easily affected by high acid ... soils and prefer soil pH between 6.0 and 6.8. Avoid heavy clay soils as they retain water longer after ... apart. Onion transplants should be planted with 1 inch of the lower portion in the soil. Fertilizing High ...

  10. Head Protection

    https://ohioline.osu.edu/factsheet/aex-7905

    contact with electrical hazards is also possible. Consider the following scenarios and the potential risk ... user’s head. Hard Hat Types A hard hat should be selected to provide the best level of protection for the ... thick, high-density foam. Type II Hard Hat   Electrical Classes of Hard Hats If protection is required ...

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