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Wastewater Treatment Principles and Regulations
https://ohioline.osu.edu/factsheet/aex-768
Sewage also contains ammonia and phosphorus. Ammonia levels can range from 15 to 50 mg/l, and phosphorus ... levels can range from 6 to 20 mg/l in untreated sewage. Sewage treatment is the multistage process that ... degradation. Therefore, each sewage treatment plant must hold a permit listing the allowable levels of BOD 5, ...
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Growing Apples in the Home Orchard
https://ohioline.osu.edu/factsheet/hyg-1401
hole at the level they were originally grown in the nursery. Most Ohio soils, however, are not ... and fruit quality, conduct a soil test every two to three years to determine the appropriate ... growing fruit than planting the trees and harvesting the crop. Growing high-quality apples requires ...
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Sooty Blotch and Fly Speck of Apple
https://ohioline.osu.edu/factsheet/plpath-fru-41
vigorously to remove it. Fly Speck Groups of six to 50 or more black and shiny round dots that resemble fly ... circulation, and good soil (water) drainage. Prune trees annually to an open center for maximum air ...
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Guidelines for Choosing a Soil Analytical Laboratory
https://ohioline.osu.edu/factsheet/HYG-1133
the test results will be of high quality, credible, and meaningful. In addition, any recommendations ... here to aid the grower in evaluating a soil analytical laboratory. Factors to Consider Test Methods ... region. This summary, entitled Recommended Chemical Soil Test Procedures for the North Central Region, ...
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Using a Waterslide to Introduce STEM to Younger Youth
https://ohioline.osu.edu/factsheet/4h-38
following page. After adult testing, your slide is ready to go! Water slides can be cheaply and safely ... tests out a simple slide. Slide Safety Operations With all the materials on hand, setting up and ... testing the slide will take approximately 15 minutes. Here are a few safety and operational ...
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Using °Brix as an Indicator of Vegetable Quality: A Summary of the Measurement Method
https://ohioline.osu.edu/factsheet/HYG-1652
fresh fruits and vegetables. The level of soluble solids in a fruit or vegetable is often used as an ... indicator of the sugars present. Soluble solids levels are usually reported in values of °Brix. °Brix values ... bent as it passes through a sample (i.e., the refractive index). Refractometers vary in design. ...
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Soil Acidity and Liming for Agronomic Production
https://ohioline.osu.edu/factsheet/AGF-505-07
is considered adequate if soil test levels are greater than 50 ppm (100 lb). Hi-cal (calcitic) lime ... ($50 hauling charge/60 acres). Summary In summary, make sure you obtain a soil test, determine if lime ... neutralization to raise the soil pH. High concentrations of hydrogen in soil solution (low soil pH) may cause the ...
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Is It Pine, Spruce, or Fir?
https://ohioline.osu.edu/factsheet/anr-80
spp.) are all types, or genera, of medium to tall (60-200 feet), evergreen, needle-bearing, ... yardwork, pruning or removal, or decorating. Spruce needles easily roll between one’s fingers and have ... soft, flat (two-sided) and cannot be rolled between one’s fingers. Fir needles give off a citrusy scent ...
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Fusarium Head Blight or Head Scab of Wheat, Barley and other Small Grain Crops
https://ohioline.osu.edu/factsheet/plpath-cer-06
50% or more of the spikelets may become damages. Scab also causes floret sterility, poor test weights ... accumulate at high levels in the harvested grain and may cause vomiting and feed refusal if scabby grain is ... Levels of vomitoxin exceeding 1 ppm and 5 ppm (parts per million) are unfit for human and livestock ...
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Lockout and Tagout
https://ohioline.osu.edu/factsheet/aex-59181
and reciprocating and conveying equipment. Test the circuit with a voltage-detecting instrument to ... Leaving keys in the locks. Locking the control circuit and not the main disconnect or switch. Not testing ... of equipment. Make sure to remove keys from the locks. Lock the main switch. Test the controls to ...