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

    https://ohioline.osu.edu/factsheet/HYG-3087

    area irrigated, is the problem worse in the sun or shade, chemicals applied (rate and formulation), ...

  2. Boom Sprayer Calibration

    https://ohioline.osu.edu/factsheet/fabe-520

    application rate in gallons per acre, or GPA. For example: If you catch an average of 15 ounces from a set of ... nozzles, the actual application rate of the sprayer is equal to 15 GPA. With this method, make sure that ... output rate, check for clogs and clean the tip, or replace the nozzle. Repeat steps 5 and 6 until the ...

  3. Precision Agriculture Tools for On-Farm Research

    https://ohioline.osu.edu/factsheet/fabe-558

    technologies continues to grow on U.S. farms. Auto-guidance, variable-rate technology (VRT), and yield monitors ... evaluating input rates (i.e., fertilizer and seed) and management practices such as tillage. In these studies ... considered. For instance, if testing different fertilizer rates within a pass or area, the time it takes to ...

  4. Calibrating Boom Sprayers for Forestry Herbicide Application

    https://ohioline.osu.edu/factsheet/fabe-529

    proper rate is essential to achieving satisfactory weed control. The directions on the container label ... tell a user which application rates give the best results. However, proper application rates will be ... application at prescribed rates requires calibration of the sprayer. If the sprayer is not accurately ...

  5. Estimated Return-to-Seed of Variable vs. Uniform Corn Seeding Rates

    https://ohioline.osu.edu/factsheet/agf-520

    seeding rate is important for efficient production. The “optimum” corn seeding rate—the one that maximizes ... agronomic production and breeding, it is important to know how practices such as variable rate seeding with ... modern hybrids may affect profitability. While adoption of variable rate technology is increasing, there ...

  6. Nutrients Removed with Harvested Corn, Soybean, and Wheat Grain in Ohio

    https://ohioline.osu.edu/factsheet/anr-74

    rates in corn, soybean, and wheat in Ohio. Summary of Findings Grain nutrient concentrations were ... nutrient concentrations of P and K have decreased, indicating lower P and K removal rates per bushel of ... grain. Decreased nutrient removal rates per bushel of grain indicate crops are becoming more efficient. ...

  7. Best Management Practices for Boom Spraying

    https://ohioline.osu.edu/factsheet/fabe-527

    the label. 1.b. Spray application rates (gpa) This information helps determine nozzle flow rates to ... solution evaporation rate, to reduce drift, and to improve deposit and retention on the target. 1.f. ... variations in the travel speed, which will directly affect the application rate. If the sprayer is equipped ...

  8. Selecting the Best Nozzle for the Job

    https://ohioline.osu.edu/factsheet/fabe-528

    application rate, as well as variability of spray over the width of the sprayer boom. Nozzles also influence ... allow compliance with label requirements such as application rate (gallons per acre) and spray droplet ... • Sprayer operation parameters —Application rate, spray pressure, travel speed •  Type of chemical sprayed ...

  9. Proper Spinner-Disc Spreader Operation, Terms and Definitions

    https://ohioline.osu.edu/factsheet/fabe-563

    deceleration since it can take a few seconds for the rate controller to adjust and maintain the target ... application rate. Operators should review the operator’s manual to become familiar with the applicator and ... a different material is spread or the rate of application is changed, assess the new spread pattern and make ...

  10. Spinner-Disc Spreader Set Up and Calibration

    https://ohioline.osu.edu/factsheet/fabe-561

    application rate such as with variable-rate application (VRA). Figure 1 shows that set-up, maintenance, and ... feed gate height by product categories (e.g. fertilizer or lime) based on the desired application rate ... (lb/ac). Rate controllers required calibration of the metering mechanism to insure accurate application. ...

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