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  1. Harvesting

    https://agcrops.osu.edu/node/4425

    level at which to harvest for dry grain storage is 25 percent. Corn normally dries approximately 0.75 to ... maturity. Ear drop damage may be high in some years as a result of extensive European corn borer damage to ... associated with harvest delays are magnified at high plant populations (Table 4-10) and hybrid susceptibility ...

  2. Accepting Participants for 3 Minute Thesis Competition

    https://grad.cfaes.ohio-state.edu/news/accepting-participants-3-minute-thesis-competition

    presentation) winners, to compete at the 3MT college level completion. The 3MT is an extension of the Hayes ... https://gradsch.osu.edu/three-minute-thesis-3mt This year's 3MT competition is using a new process which will include a college-level review. ... university level competition. ...

  3. 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 ...

  4. Disease Resistance and Tolerance

    https://agcrops.osu.edu/node/4416

    use of hybrid resistance and tolerance to minimize crop losses.  Hybrid response to high population ... shown positive yield response to higher populations cannot be grown at high plant densities because of ... the increased risk of lodging at harvest. Lodging reduces yields and slows the harvest operation. ...

  5. Yield Potential and Stability

    https://agcrops.osu.edu/node/4414

    Choose hybrids that have produced consistently high yields across a number of locations and/or ... years. The Ohio Corn Performance Tests (OCPT) indicate that hybrids of similar maturity vary in yield ... high yields; instead, look for stability in performance across environments.  Most of the hybrids ...

  6. Growing Degree Day (GDD) Maturity Rating System

    https://agcrops.osu.edu/node/4413

    (T min) is less than 50 degrees Fahrenheit, 50 is used to determine the daily average. The high ... calculation method most commonly used for corn in the U.S. is the 86/50 cutoff method. GDD are calculated as ... the average daily temperature minus 50.  If the maximum daily temperature (T max) is greater than 86 ...

  7. 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 ...

  8. Plan Now for Fall Fertilization of Perennial Forages

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-26/plan-now-fall-fertilization-perennial-forages

    When soil test P exceeds the agronomic level of 50 PPM, there is increased  potential of P losses into ... For example, many dairies have high levels of soil P, making the expense of fertilizer P unnecessary. ... over-application harms the environment and can harm animals fed those forages. A recent soil test should always ...

  9. Developing Phosphorus and Potassium Recommendations for Field Crops

    https://ohioline.osu.edu/factsheet/AGF-515

    + (0.05 x CEC))] + (YP x CR) + 20 CL is the critical level (100 ppm at a CEC of 10), STL is the soil test ... test results are based on soil calibration studies that correlate soil test levels to crop yield ... crop (buildup stage). Once soil test values reach the critical soil test level, a maintenance approach ...

  10. Grain Quality

    https://agcrops.osu.edu/node/4417

    indicated that protein and oil levels vary considerably from test to test (Table 4-8). Some normal dent corn ... and protein are evident in under certain testing conditions, the Ohio Corn Performance Test has ... hybrids produced primarily for grain exhibit elevated protein and oil levels. Environmental conditions ...

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