Old 06-24-2008, 09:52 AM
lilmarvin4064's Avatar
lilmarvin4064 lilmarvin4064 is offline
LawnSite Senior Member
Join Date: May 2005
Location: transition-zone
Posts: 753
Herbicide / Fungicide tank mix

Does anyone know for sure which herbicide/fungicides/fertilizers are compatible in a tank mix?

A buddy of mine just learned of an incompatible mix the hard way (understatement). He had been spraying a mix of Eliminate (MCPA, triclopyr, dicamba) + Dimension 2EW + urea + Pot nitrate + chelated Iron with no problems. 20 Gallons left in the tank, he added another 40 gallons of water, then a bag or 2 of Thiophanate methyl (T-storm) WS PVA bags. It sprayed out for a little while, then the pump started knocking. Long story short; diaphragms in the pump ripped apart, gear reduction shredded, and there's a large mass of brown tar inside the tank. He's in the process of taking his whole spray system apart and repairing/cleaning it. DO NOT MAKE THIS SAME MISTAKE.

I'm looking to see if anyone has succesfully mixed any of the following...

Momentum fx2 (2,4-D, triclopyr, fluroxypyr) + propiconazole OR
" + Armada (triademefon + trifloxystrobin)
" + myclobutanil
" + thiophanate-methyl

and/or if you know of any tank mixes that cause problems like the one above, please inform us all. Thanks
Reply With Quote
Old 06-24-2008, 01:51 PM
LushGreenLawn's Avatar
LushGreenLawn LushGreenLawn is offline
LawnSite Silver Member
Join Date: Mar 2006
Location: Dover, DE
Posts: 2,123
Search for Jar Test. You will get some useful information on how to test materials you are considering mixing.
Reply With Quote
Old 06-24-2008, 10:12 PM
RigglePLC's Avatar
RigglePLC RigglePLC is offline
LawnSite Fanatic
Join Date: Jul 2006
Location: Grand Rapids MI
Posts: 10,985
i don't like those self-dissolving PVA bags. Sometimes they don't dissolve--and plug up the filter and pump. Sticky residue.
Reply With Quote
Old 06-24-2008, 10:58 PM
LawnSite Senior Member
Join Date: Jun 2007
Location: pennsylvania
Posts: 579
Herbicide and Fungicide mixtures usually are not very compatable, if possible try to spray them seperate, sometimes the synergy effect itself actually changes the effectiveness of these combos.
Reply With Quote
Old 06-26-2008, 03:42 AM
greendoctor greendoctor is online now
LawnSite Fanatic
Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 8,315
The application parameters are also very different for fungicides vs herbicides. Don't think I am going to spray herbicides through my fungicide set up. That is a boom with ceramic hollow cone nozzles spaced 12" and operated at over 100 PSI.
Reply With Quote
Old 06-26-2008, 09:25 PM
vegomatic40's Avatar
vegomatic40 vegomatic40 is offline
LawnSite Senior Member
Join Date: Nov 2001
Location: 6
Posts: 406
While that does sound like some compatibility issues, I'm not convinced that they are entirely to blame for something as destructive as shredding of the gear reducer. A pump with torn diagphragms would still continue to turn even if they were torn in half. The gear reducer is seperate unto itself and would only shear or shred if the pump was locked or the pump crankshaft somehow failed (very rare).
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Layout Style:

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Grand View Media
All times are GMT -4. The time now is 04:44 AM.

Page generated in 0.07658 seconds with 10 queries