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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. ...
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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 ...
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Corn, Soybean, and Alfalfa Yield Responses to Micronutrient Fertilization in Ohio
https://ohioline.osu.edu/factsheet/agf-519
Micronutrient Deficiencies May Occur. Micronutrient Soil Crop Boron (B) Sandy soils or highly weathered soils ... Alfalfa. Diagnosing Micronutrient Deficiencies There is a large degree of uncertainty in using soil tests ... for monitoring soil micronutrient levels, as crop micronutrient availability is determined by complex ...
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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 ...
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Soils and Soil Health
https://ohioline.osu.edu/factsheet/anr-0136
nutrients air—2%–50% of soil volume oxygen, carbon dioxide, nitrogen occupies same spaces between soil ... bad, or mid-level soil test results to compare against. The Ohio State University has conducted a vast ... nutrients—aka “potential for productivity” water—2%–50% of soil volume water-holding capacity is directly ...
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Produce Safety and Flooded Fields
https://ohioline.osu.edu/factsheet/anr-27
is considered a high risk to produce safety and quality. There are two types of water events that ... the floodwaters crest and recede. Considered high risk. Pooling: Standing water. Occurs after rain or ... considered high risk to produce safety. The bottom line: Floods adulterate produce. Under FDA guidance, ...
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Wood Destroying Insect Inspection- October 26, 2023
https://pested.osu.edu/events/wood-destroying-insect-inspection-october-26-2023
category 12 WDI exam is required for currently licensed applicators Pass the core test and category 12 test ... Complete this mandatory course The test will be offered upon completion of the course. You may take the ... test before taking the course. For more information about Wood-Destroying Insect Inspections, click ...
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Global Climate Change: Update 2020
https://ohioline.osu.edu/factsheet/cdfs-203
at between 280 and 300 parts per million (PPM). The data also show that during our present ... episode that is currently ongoing. The duration of these cold periods tends to be between 20 and 40 ... between 10,000 and 20,000 years ago. This temperature data is presented in Figure 3. This graph shows that ...
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Feeding Horses
https://ohioline.osu.edu/factsheet/anr-6
(from forage analysis) 1.07 15.4 0.94 0.41 Pelleted Grain (from feed tag) 1.50 12.0 0.75 0.85 ... we need to substitute grain for hay to raise the energy. 1.50 Mcal/lb DE of grain – 1.07 Mcal/lb DE ... source of sulfur. Excessively high levels of sulfur depress copper absorption. Sulfur is also found in ...
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Understanding Soil Microbes and Nutrient Recycling
https://ohioline.osu.edu/factsheet/SAG-16
and the microbes and soil organisms habitat are destroyed. In a no-till field, high levels of SOM are ... Bacteria 10 8 –10 9 40–500 Actinomycetes 10 7 –10 8 40–500 Fungi 10 5 –10 6 100–1500 Algae 10 4 –10 5 1–50 ... nutrients. Consider the following three scenarios. Soils typically turnover 1 to 3 percent of their nitrogen ...