cleaning a sprayer

Charlie M

Well-known Member
I have a small sprayer, 125 gallon plastic tank that I had round up in and now I want to spray weeds in a non round up corn field. If I rinse the tank really well and run clean water through the pump and tubing will that be enough to remove the round up and not kill my corn?
 
I always do at least 3 thorough rinse procedures. Hose the tank walls sown real good and run plenty clean water through pump and boom, nozzles in. Takes some time but worth it!!
 
Used to be that all pesticides were made so that ammonia neutralized the pesticide. We used to wash out the sprayed with ammonia and water and flush really well with water after using herbicides, so we could spray insecticide on the plants. We used to buy ammonia by the case to wash out the sprayers.
I assume that is still the case, but I have not done any spraying for many years. I would think that the instruction sheet would tell you also.
Good luck.
 
Straight water is not really good enough to clean out your sprayer tank. You can buy tank cleaner for $8/lbs. and that treats 100 gallon of water. Also ammonia will neutralize 95% of all the common chemicals out there. You need at least a gallon in 50 gallons to flush out a 500 gallon tank and booms well. I flush out with plain water first. Then use cleaner/ammonia with at least 100 gallon of water. The finish with straight water. I have never had any damage after doing this.
 
Triple rinse with water is all I have ever done to clean my sprayer when switching herbicides. I've always found it plenty good enough. I also remove and rinse every nozzle and screen. Its an 800 gallon tank so there is a lot more water for dilution which helps.
 
Rinse 3 times with water has worked for us . Have not had any problems. Usually 60 to 90 gallon of water at a time in 400 gallon tank.
 
I've done all of the things listed with no problems with cross contamination. Rinsed,tank cleaner,ammonia. I guess a lot would depend on what you would be switching from and to. Corn to beans I would probably use a cleaner. Also for going from a herbicide to a fungicide or insecticide. Just switching from one crop to another I would just rinse well. Then go spray the water on a compatible crop and repeat then drain out completely and rinse again.
 

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