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  1. Calculating Cation Exchange Capacity, Base Saturation, and Calcium Saturation

    https://ohioline.osu.edu/factsheet/anr-81

    example of typical soil test levels in Ohio (in ppm). We can calculate the collective charge each cation ... by the soil test levels. For calcium, a soil test level of 2000 ppm, divided by 200 equals 10.0 ... (ppm) to meq/100 g soil for base and acid cations to determine CEC. Base Cation Soil test level (ppm ...

  2. Measuring Standing Trees

    https://ohioline.osu.edu/factsheet/F-35-02

    an estimate of the board-foot content of a tree based on tree-trunk diameter breast high and ... Number of 16-Foot Logs 1/2 1 1-1/2 2 2-1/2 3 3-1/2 4 Board Feet 12 20 30 40 50 60       14 30 50 70 80 90 ... 60 80 100 120       14 40 80 110 140 160 180     16 60 100 150 180 210 250 280 310 18 70 140 190 240 ...

  3. Herbicide Resistance in Waterhemp

    https://ohioline.osu.edu/factsheet/anr-78

    population tested for presence of resistance   University of Illinois, $50 per field Use a combination of PRE ... genetic variability results in a relatively high frequency of mechanisms that can impart resistance to ... a population to an herbicide, increasing the risk of failure the next time that herbicide is used. Figure 1. ...

  4. Forest Management

    https://ohioline.osu.edu/factsheet/F-34-02

    1. Examples of Forest Landowner Objectives Source of Income Tax Shelter Product Yield Soil ... species, condition, numbers, age, volume, value, growth, and basal area will be measured. Soil/site quality ... biological/ecological characteristics of the forest (e.g., tree species, soil type, topography, etc.) determine what is ...

  5. Controlled-Release Fertilizers in the Production of Container-Grown Floriculture Crops

    https://ohioline.osu.edu/factsheet/HYG-1260

    a 20–10–20 water-soluble fertilizer at an application rate of 150 ppm N (left), or a 16–9–12 ... rates, release by shorter longevity CRFs (e.g., 3–4 month) may result in excessively high salt levels ... acidic fertilizers to compensate for high alkalinity levels in the irrigation water need to adjust the ...

  6. Inoculants and Soil Amendments for Organic Growers

    https://ohioline.osu.edu/factsheet/SAG-17

    Green manures added to soil from cultivating cover crops between cash crops can be effective in adding ... maintain appropriate and balanced soil fertility, a soil test should be conducted before applying ... Manures Green manures can be added to soil by cultivating cover crops between cash crop growing seasons. ...

  7. Columbus and Wooster Campus students compete in ASAS Midwest Academic Quadrathlon

    https://ansci.osu.edu/news/columbus-and-wooster-campus-students-compete-asas-midwest-academic-quadrathlon

    Madison, WI. This competition tests the team in all areas of animal science and incorporates hands-on ...

  8. Gibberella Ear Rot and Mycotoxins in Corn: Sampling, Testing, and Storage

    https://ohioline.osu.edu/factsheet/plpath-cer-04

    steps. Semi-quantitative tests estimate vomitoxin at or above certain levels (>5ppm) or within a given ... (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. ...

  9. Dr. Sandra (Sandy) Velleman retires following three decades of industry leadership

    https://ansci.osu.edu/news/dr-sandra-sandy-velleman-retires-following-three-decades-industry-leadership

    Connecticut and worked closely with Dr. Carl Nester. Conversations between the east coast natives often ranged ...

  10. PAS Information- State Fair Selection- Horses

    https://darke.osu.edu/program-areas/4-h-youth-development/darke-county-junior-fair-0/pas-information-state-fair-selection

    must have proof of a negative Coggins test (dated after 1/1/2024). Youth may opt to attend a PAS Show ...

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