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Cut Crop Injury by Cleaning Sprayer
Instructions for cleaning sprayers vary by herbicide, but details are on labels. In general, older sprayers used to apply 2,4-D type products should be rinsed with water and the rinse sprayed onto the crop.
**** CLEAN A SPRAYER CONTAINING OIL BASED HERBICIDES **** (ester forms of 2,4-D and similar materials), by following these steps:
1. Rinse sprayer with kerosene, diesel fuel or a comparable light oil.
2. Fill tank one-fourth to one-half full of a water-ammonia solution (1 qt of household
ammonia to 25 gals of water) or a trisodium phosphate solution.
3. Circulate solution through system for a few minutes, then let a small amount go
through nozzles.
4. Allow rest of solution to stand six hours and pump through nozzles.
5. Remove nozzles and strainers, then flush system twice with clean water.
**** TO CLEAN A SPRAYER CONTAINING WET-TABLE POWDERS, AMINE FORMS OF 2,4-D AND WATER-SOLUBLE LIQUIDS **** do the following:
1. Thoroughly rinse tank with a water-detergent solution (2 lbs. detergent in 30-40
gallons water).
2. Allow water-detergent to circulate through system for several minutes, then spray it
on crop.
3. Remove nozzles and strainers, then flush system twice with clean water.
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