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  1. Heating, Ventilation, and Air Conditioning (HVAC)

    https://greenhome.osu.edu/energy-efficiency/heating-ventilation-and-air-conditioning

    efficiency ratings, types of heating fuels, and types of cooling systems HVAC System Components A typical ... ratings, the heating sources and cooling sources available in your area, and the advantages and ... disadvantages of each type of system. Energy Efficiency Ratings Systems There are several efficiency ratings ...

  2. Windows & Skylights

    https://greenhome.osu.edu/windows-skylights-and-roofs

    U-factor Rate at which a window or skylight conducts heat. It is generally expressed in units of Btu/hr-ft ... per minute per square foot of frame area (cfm/ft 2). A product with a low air leakage rating will be ... Solar gains. SHGC ranges between 0 and 1, with a higher rating admitting more radiative energy. ...

  3. Evaluate rate to account for organic and inorganic nitrogen sources applied

    https://agbmps.osu.edu/scenario/evaluate-rate-account-organic-and-inorganic-nitrogen-sources-applied

    might limit the total rate of the organic source applied, additional nitrogen might be needed. ... commercial fertilizer rates and to match the total nitrogen needs of the crop. The highest measured nitrogen ... losses in water are seen where full rates of commercial fertilizer nitrogen are applied in combination ...

  4. Critical Area Planting (NRCS 342)

    https://agbmps.osu.edu/bmp/critical-area-planting-nrcs-342

    Establishing permanent vegetation on sites that have, or are expected to have, high erosion rates ... expected high rates of soil erosion by wind or water. Stabilize stream and channel banks, pond and other ...

  5. Nitrogen Recommendations When Organic N is Used

    https://agbmps.osu.edu/bmp/nitrogen-recommendations-when-organic-n-used

    a yield goal to set nitrogen rates (Table 3). Manure application rates should be carefully considered to ... avoid excessive nitrogen rates. Over-application of nitrogen often results in increased wheat lodging, ... timing, placement and rate are considered. The N cost of a corn enterprise budget makes up 15-20% of the ...

  6. Soil test P levels greater than 150 PPM or P Risk Index of High to Very High.

    https://agbmps.osu.edu/scenario/soil-test-p-levels-greater-150-ppm-or-p-risk-index-high-very-high

    the Ohio P Risk Index to see if further use of BMPs would benefit water quality. Fertilizer rate ... nutrients. Use variable rate application where spatial variation results in a range of suggested nutrient ... application rates to avoid applications if only areas of the field are at these elevated soil test levels. ...

  7. Tiled fields lead to Nitrogen losses

    https://agbmps.osu.edu/scenario/tiled-fields-lead-nitrogen-losses

    to crop need. Use a maximum return to nitrogen rate of nitrogen as a starting point to determine the ... nitrogen need for corn. If wheat, use the yield goal rate from the Tri-State Fertilizer Recommendations for ... application of commercial fertilizer or previous manure applications. Do not exceed the total recommended rate ...

  8. Soil test P levels between 50 PPM and 150 PPM (or P Risk Index of Medium to High)

    https://agbmps.osu.edu/scenario/soil-test-p-levels-between-50-ppm-and-150-ppm-or-p-risk-index-medium-high

    further use of BMPs would benefit water quality. Fertilizer rate determination and application practices ... levels, yield goals, and the 4R’s of nutrient stewardship (the right rate, right placement, right timing, ... field for application of organic nutrients if at all possible Apply no more than a 2 year rate of ...

  9. In-Crop Application of Manure Sourced Nutrient to Maximize Crop Uptake

    https://agbmps.osu.edu/bmp/crop-application-manure-sourced-nutrient-maximize-crop-uptake

    which focus on the “right” rate, placement, timing and source of nutrients to maximize crop yield and ... relates to in-crop application of manure. The rate, timing and placement strategies of 4R Nutrient ... fraction will become available through mineralization. “Rate” based manure nutrient strategies have ...

  10. Subsurface Placement of Nutrient

    https://agbmps.osu.edu/bmp/subsurface-placement-nutrient

    2001). Banded fertilizer rates can be reduced by 25–50 percent. The goal in fertilizer addition is to ... fertilizers are used, limits to nitrogen and potassium total rates exist. Due to the potential of injury from ... 17 percent of the application rate might be possible. Figure 34. Effect of phosphorus placement on ...

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