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In response to my RFI, Michael Atzeni forwarded
data about glyphosate, the active ingredient in Roundup. I have
selected some to present here.
Brahman-cross heifers were
killed when given 790 and 1000 mg/kg for seven consecutive days.
Various trials on fishes at dosages about 6-10 mg/L were
moderately toxic, whereas some others at higher doses were only slightly
toxic.
An Oral LD50 trial for goats was considered slightly toxic at
4860 mg/kg.
Tissue residue analyses indicated a lack of
bioaccumulation.
Glenn
Glenn Holmes & Associates
Birding & botanical
specialists
PO Box 1246 Atherton
Qld 4883
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