Davey Tree Flipbooks

7 APPLICATOR GUIDANCE This section offers important information and reference materials related to planning and making herbicide applications. It contains these subsections: General RIVM Guidelines and Level of Concern: Provides tips to follow when integrating herbicides into a prohibited noxious weed RIVM program. A table rates each of the 21 Ohio prohibited noxious weeds using factors that concern ODOT: Ohio distribution, roadside distribution, growth, seeds, ability to dominate, and difficulty of control. Plant Life Cycles and Chemical Control Timing: The 21 Ohio prohibited noxious weeds and 5 invasive plants in this Guide are sorted in the Plant Life Cycle table. For each plant, an herbicide type is recommended for treatment. In the Chemical Control Timing table, each life cycle is shown on a seasonal timeline from seed germination to dieback, with icons indicating primary (most important window) and secondary (backup window if the primary window was missed) timing for herbicide applications. Common RIVM Herbicides: Contains a table of commonly used roadside vegetation management herbicides by herbicide type, chemical name, and trade name. Calibration Guidance for Directed Herbicide Applications: Provides guidance for directed herbicide applications when using a spray gun or backpack sprayer. Included on this page are a table that lists typical flow rates and spray times that can be used to help calibrate equipment and a completed worksheet illustrating how to estimate the time needed to spray 1 acre. Calibration Guidance for Broadcast Herbicide Applications: Provides information for spray truck applications emphasizing calibration, application and flow rates, nozzle adjustment and aim, and ground speed. Two tables and completed worksheets are provided. One table converts acres into lane miles based on spray nozzle width. The second table estimates the time needed to spray 1 acre based on ground speed and spray nozzle width. Completed worksheets demonstrate how to mix the proper amount of herbicide solution based on tank size and how to estimate the quantity of herbicide solution to mix based on available work hours. Guidance for Preparing an Herbicide Mixture: Lists some basic reminders for the licensed applicator that affect planning an application such as the size of the area, the type of herbicide, determination of proper application rates, and the total mix volume based on size of area to be treated. Completed worksheets show how to calculate the gallons of water to be added to the solution based on the herbicide per acre rate and herbicide percent solution. Daily Pesticide Report (M&R-629): ODOT's required form to be completed daily when making herbicide applications. Example of a completed worksheet is provided. Area Conversions: Tables to assist in converting acres into miles or linear feet depending on nozzle spray width, and to convert lane miles into linear feet, and acres into square feet. Volume Conversions and Mix Rates: Tables convert common liquid volumes to ounces, pints, quarts, or gallons, and help determine mix rates for different percent solutions based on various total desired gallons of herbicide solution. APPLICATOR WORKSHEETS The following worksheets can be used to plan directed and broadcast herbicide treatments: · Calibration for Spray Gun or Backpack Sprayer (time to spray 1 acre or 1,000 square feet based on flow rates) · Production Based on Tank Size (number of acres to be treated with a full tank of herbicide solution) · Production Based on Work Hours (number of acres to be treated with the available daily work hours) · Herbicide Per Acre Rate (gallons of water needed to mix an herbicide solution based on labeled herbicide as a per acre rate) · Herbicide Percent Solution (gallons of water needed to mix an herbicide solution based on labeled herbicide as a percent) ODOT's required Daily Pesticide Report form is included in this Guide for reference: ODOT's Daily Pesticide Report (M&R-629) GLOSSARY OF TERMS Terms from this Guide and terms related to RIVM are defined. NOTES Extra pages are provided to take notes and make calculations.

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