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  1. Ammonia Emission from Animal Feeding Operations and Its Impacts

    https://ohioline.osu.edu/factsheet/AEX-723.1

    50 ppm, increased levels of keratoconjuctivitis and tracheitis have been observed. These trachea and ... causes high ammonia levels inside animal production buildings, especially in winter months when the ... concentrations. People begin to detect odors at 5–50 ppm. Irritation to mucous surfaces occurs at 100–500 ppm ...

  2. Take the Test to Beat the Pest

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-37/take-test-beat-pest

    200 eggs/100 cc soil. Some fields (8%) had levels above 5,000 eggs/100 cc soil, which we know can ... to TWO soil samples, per grower, to be tested for SCN, free of charge. For more information on how to ... pathogen of soybean is that it can cause yield loss between 15 and 30% with absolutely no visible symptoms. ...

  3. Fall Soil Fertility Sampling

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-37/fall-soil-fertility-sampling

    inputs. If soil test P and soil test K levels are within the maintenance range it is extremely unlikely ... limitations and strengths (Figure 1). Zone and grid soil sampling will provide the highest level of ... information from soil test results as fields can have a great deal of variability of soil test P, K, and pH ...

  4. Weather Update: Seasonal Rollercoaster

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-38/weather-update-seasonal-rollercoaster

    gusty winds. High temperatures will reach the 60s across Ohio for Tuesday through Thursday, 50s on ... the Midwestern Regional Climate Center (https://mrcc.purdue.edu/).     Forecast High pressure will ... across the north this weekend as well. The Weather Prediction Center is currently predicting 0.25-0.50 ...

  5. Jack Frost Will Bite Soon- Precautions for Feeding Frosted Forages

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-36/jack-frost-will-bite-soon-precautions-feeding-frosted-forages

    affect poisoning risk. Plants growing under high nitrogen levels or in soils deficient in phosphorus or ... risk of toxicity: Grain sorghum = high to very high toxic potential Indiangrass = high toxic potential ... dangerously high in prussic acid. Drought stress can affect prussic acid poisoning risk. Drought-stunted ...

  6. Collect Fall Soil Samples for SCN

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-37/collect-fall-soil-samples-scn

    sample for SCN? Fall is the best time to sample for SCN. After soybean plants are harvested, a soil test ... testing. Please see Dr. Lindsey’s article on fall soil fertility sampling.   How should you collect soil ... samples for SCN? Different sampling strategies can be used to collect soil sample for SCN testing, including ...

  7. 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 ...

  8. Collecting and Submitting a Turfgrass Sample to the Plant and Pest Diagnostic Clinic

    https://ohioline.osu.edu/factsheet/hyg-3087-10

    shipping information are correct. Step 1: Collecting the Sample For "high-cut turf " such as ... healthy (unaffected) and sick (infected) turf. This allows a comparison to be made between the healthy ... both high-cut turf and golf-course samples, be sure the sample includes roots. Many people might not ...

  9. Transportation Issues are Affecting Harvest Completion

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-39/transportation-issues-are-affecting-harvest-completion

    are shown below. Key Findings: Yield losses between mid-October to December averaged 13%, with 90% of ... the losses occurring after mid-November. Grain moisture decreased nearly 6% between harvest dates in ... The greatest increase in stalk rot incidence came between harvest dates in October and November. In ...

  10. Building hope in a space and movement where change feels unlikely

    https://epn.osu.edu/blog/building-hope-space-and-movement-where-change-feels-unlikely

    United Nations Climate Change Conference of the Parties – “COP 26” – in Glasgow, U.K. between October 31, ... A History of World Soil Day and Overview of Climate Smart Agriculture with Dr. Rattan Lal and the EPN. ...

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