brojack wrote:

Well, there's no question that RoundUp cuts a pretty wide swath
through the invertebrates that encounter it. It has a very short
stability profile, however; so, it doesn't hang around to keep
killing. And, as herbicides go, it's pretty safe for humans if
handled correctly. So, basically, it comes down to the old
question of cost-benefit ratios: Is the advantage of one-pass
defoliation worth the loss of all your invertebrates in this
particular instance?

Chris Owens

What I really need to know is its effect on ground water.

Jack

Jack, that depends entirely on the type of soil through which the
RoundUp needs to go to get to the groundwater. All soils bind it
to some extent; clay does quite heavily. Howsomever, any that
does reach the ground water will have the same devastating,
albeit brief, effect on the invertebrates there as it does in
your garden. I assuredly would not think it safe for people to
drink from a well supplied by such water until the glyophosphate
had broken down.

Chris Owens


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