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South Central Iowa | With sprayer tank dry:
1) run in 10-20 gallons of water and dump
2) run in 150-200 gallons and run all through boom at high psi
3) run in 10-20 gallons of water and dump
4) run in your glyphosate load and spray out in entirety.
5) run in 10-20 gallons of water and dump
6) run in 150-200 gallons and check to see if crystal clear
7) if so, you're good to go
My normal clean out for almost everything is those steps, but instead of the glyphosate, just another water load (ammonia added if I want to feel more comfortable). I have never injured anything ever. Here's why:
If 5 gallons of solution was in sprayer to start, it contained maybe 1.5 quart of Lexar, a 1/2 acre rate. 20 gallons dumped dilutes it by 1/5, now a 1/10th acre. 5 gallons still remaining with 200 in now dilutes 1/40 to 1/400th an acre. 5 gallon remaining, 20 in dilutes 1/5, now chemical for 1/2000th acre. 5 gallon remaining and 800 gallon in (or whatever) equals 1/160th, now enough chemical for 1/320,000th acre. 5 gallon remaining, 20 in dilutes 1/5, now enough chemical for 1/1,600,000th acre. 5 gallon load and new soybean load with 800 gallon dilutes 1/160th, now enough chemical for 1/256,000,000th acre.
You will not damage anything. Just make sure you run through your boom several hundred gallons twice and charge up before you spray. Need to clear the water out of the boom, with my sprayer it takes 20 gallons before all is chemical coming out. I always do it in a fencerow or on my shop gravel. Some do it over the field and if you were to injure something, it would come in that first bit out of the boom, don't do it over the field.
Edited by Conan the Farmer 5/22/2017 21:14
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