Sprayer contamination could result in::
Sprayer contamination could result in: Symptoms that appear drift-like
Crop loss
Environmental pollution
Reduced effectiveness of the tank mix
Fines
Lawsuits
Loss of certification
Loss of income
Sources of Contamination of Spray Equipment::
Sources of Contamination of Spray Equipment: Improper or inadequate cleanout
Redissolved residues
Contamination from using remix water
Poly fiber tanks, old hoses
Low-rate actives with highly active molecules
Presence of tank mix partners
Mini-bulk contamination - repackaging
Ways to reduce or avoid contamination::
Ways to reduce or avoid contamination: Use pesticide resistant materials
stainless steel tanks
Removing enough liquid during the cleanout process
‘Follow’ proper cleanout procedures
label information if provided
Extension publications
Adopting engineering controls
tank rinsing nozzles
Use special cleaners
Use a dedicated sprayer
Steps for cleanout::
Steps for cleanout: Work in a safe area (environment and people).
Hose down inside of tank
Fill tank have full and flush out through the nozzles.
Repeat and include a proper cleaning agent.
Flush final time with clean water.
Steps for cleanout::
Steps for cleanout: Spray and mix/load equipment should be thoroughly rinsed with clean water and the rinsate applied to field (according to label) prior to the cleaning process.
Three primary mechanisms:
Dilution, deactivation, and extraction
Select cleaning agents
Commonly use ammonia (not chlorine bleach)
Commercial tank cleaning agents or common household detergents (liquid or dry)
General cleaning solutions::
General cleaning solutions:
Web sites with clean-out information::
Web sites with clean-out information: http://entweb.clemson.edu/pesticid/saftyed/dptclean.htm
http://www.weeds.iastate.edu/reference/pat30.pdf
http://muextension.missouri.edu/xplor/agguides/crops/g04852.htm
http://www.oznet.ksu.edu/library/ageng2/mf1089.pdf