The point remains that RoundUp is a problem for frogs far from aquatic areas (we have them 600 yards from and 200 feet in elevation above the nearest stream). Your post left the impression that if people used RoundUp far from aquatic areas and reserved Rodeo for aquatic use there would be no problem. That is not true when aquatic animals are found far from aquatic areas.
Rodeo doesn't have a surfactant system. You need to add it youself. Several studies have shown LI 700, Induce, and X-77 pose little risk to aquatic organisms. When that is added, Rodeo works just as well as Roundup, if not better.
Thanks for the information. I have never used Rodeo as I am far from an aquatic area and thus had no need. One problem however: I have called ALL of the ag chemical suppliers in this area (which includes Wilbur Ellis in the Salinas Valley, one of the largest distributors of ag chemicals in the world) and NONE of them sell any of those surfactants. I would bet that they would be pricey, perhaps doubling the cost of use.
I agree completely. I think sometimes I don't explain my points well- just saying it does not surprise me in the least that Roundup is bad for amphibians. The key is avoiding the overspray. If properly applied (stem treatment)I imagine most critters would be unaffected.
One problem however: I have called ALL of the ag chemical suppliers in this area (which includes Wilbur Ellis in the Salinas Valley, one of the largest distributors of ag chemicals in the world) and NONE of them sell any of those surfactants. I would bet that they would be pricey, perhaps doubling the cost of use.
I don't remember them being pricey. We mostly used LI 700 and I believe it was ~ $20 a gallon. A gallon goes a long way. I will see if i can find our supplier post the details.
We went with TrueNorth. Here is a link to their price list. $8.90 a Liter or $178.00 a case. Pretty comparable to other surfactants.
http://www.truenorthspecialty.com/english/2005pricebook1.pdf