Site

Search results

  1. Understanding How Soil Test Phosphorus Impacts Water Quality

    https://ohioline.osu.edu/factsheet/anr-0111

    Soil test P is one indicator of environmental P loss potential from a field. STP values above 100 ppm ... Tests as Risk Indicators for Leaching of Dissolved Phosphorus from Agricultural Soils in Ontario. Soil ... called eutrophication, results in depleted dissolved oxygen in water bodies. A soil test for P (STP) ...

  2. Soil Phosphorus and Crop Response to Phosphorus Fertilizer in Ohio

    https://ohioline.osu.edu/factsheet/anr-0146

    responding to applied P can best be predicted by soil-test P levels. Recently, Culman et al. (2023) published ... 29.9% of trials, soybean in 14.2% of trials, and wheat in 36.8% trials. Critical soil test levels ranged ... Furthermore, the risk of yield loss with no P application decreased as the soil P level increased. As per the ...

  3. Ohio Data that Shaped the Tri-State Fertilizer Recommendations

    https://ohioline.osu.edu/factsheet/agf-518

    that very low soil test levels require high fertilizer rates, but as soil test levels increase, our ... able to answer the question, “At what soil test level should I apply fertilizer to see a yield ... response?” To answer this question, we need to establish a critical soil test level.  For each trial, we ...

  4. Developing Phosphorus and Potassium Recommendations for Field Crops

    https://ohioline.osu.edu/factsheet/agf-0515

    determined using field studies to correlate soil test levels to crop yield response. Ohio data was used to ... This framework strives to build soil test levels up to and beyond a critical level, and then maintain ... these levels over time. The critical level is a key component to this framework. Soil test levels above ...

  5. Battle for the Belt: Season 2 Episode 11- Freeze-Damaged Corn Update

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-18/battle-belt-season-2-episode-11-freeze-damaged-corn-update

    k&list=PLYlh_BdeqniJ4J-htcJ9Z5MjULk3E8Eqk&index=23&t=1s In Episode 11, we join Taylor Dill, PhD student for ... Battle for the Belt, for a field update on freeze-damaged corn. Freeze damage is a risk when corn and ... Research Station. Corn planted on March 25 th sustained freeze damage between April 21 st and 22 nd with ...

  6. Nutrient Management of Forage Crops Intended for Hay

    https://ohioline.osu.edu/factsheet/anr-0109

    is to maintain soil test P and K between the “critical level” (minimum) and “maintenance limit” ... level before planting. The estimated amount of P 2 O 5 required to raise a soil test 1 PPM is 20 pounds ... For example, if a soil test is 100 PPM and the goal is to increase the soil test to a critical level ...

  7. 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 ...

  8. Crop Response to Potassium Fertilizer in Ohio

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-04/crop-response-potassium-fertilizer-ohio

    of yield penalty with no K application decreases as soil K levels go above 100 ppm. If the soil test ... (2023) classified Mehlich-3 soil K levels into <70, 70-100, 100-130, 130-160, and >160 ppm to ... yield, the higher the yield increase from K fertilizer.   Generally, as the soil test K levels decreased, ...

  9. 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. ...

  10. Crop Response to Phosphorus Fertilizer in Ohio

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-03/crop-response-phosphorus-fertilizer-ohio

    soil P levels go above 20 ppm. If the soil test P level is less than 20 ppm, there is an increased risk ... less than 10 ppm, the median relative yield was 87%. As the soil test P level increased above the ... the Mehlich-3 soil test P level. The Mehlich-3 soil P measures the readily available soil P for crop ...

Pages