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28. Consider Direct Injection

Direct injection unit

With direct injection systems, chemicals are injected into the main sprayer line where they are mixed with carrier and then applied through conventional nozzles. This way, pure chemicals are kept separate from the water carrier tank.

Direct injection units can be equipped with multiple containers to hold different pesticides. With a flip of the switch, you can move from one pesticide to another on the go, and some systems allow you to apply multiple chemicals at a time.

pesticide application With such features, you can apply pesticides to only the areas that need them, not to the entire field, thus reducing your total chemical use.
remove the container When you are done spraying the field, simply remove the container, make sure it is properly marked, and store it until the next use. By using the same container for the same pesticide, you don't have to worry about leftover chemical, reducing your chances of spilling and exposure. There is no leftover rinsate to deal with and no need to flush or clean the entire rig.
Direct injection Direct injection has sometimes been described as a closed handling system, but that is not entirely accurate. With a true closed handling system, the operator has virtually no contact with the chemical as it is loaded into the applicator. For example, with some systems, you can attach insecticide containers directly to the planter so they drain directly into the planter box.
using ultraviolet light to track pesticide exposure A University of Illinois demonstration, using ultraviolet light to track pesticide exposure, found a dramatic increase in a farmer's exposure to pesticides when producers did not use a closed system. In this image, the white areas on the farmer's hands indicate pesticide residue after using a non-closed system. The ultra-violet light showed much less residue with a closed system.
hoses that have "drylock" connectors Another type of closed handling system consists of hoses that have "drylock" connectors. These hoses virtually eliminate leaks and spills as chemical is pumped from a bulk or mini-bulk container into the spray tank.
chemicals now come in water-soluble bags In addition, many chemicals now come in water-soluble bags, which dissolve in the spray tank within minutes. They eliminate pesticide container disposal problems, provide pre-measured quantities of chemicals, and reduce your exposure to chemicals.

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