commented on Water is the Connection
2017-09-06 16:14:06 -0700
Hello Fritzi, thanks for the comment! The pesticides chosen for the factsheets are ones most prominently detected in the Willamette Basin that have viable alternatives available. The longer publication discusses additional pesticides as well as concerns with combinations. Synergistic effects are often much greater than additive effects!
From the publication:
“Understanding the combined toxic effect of multiple pesticides in streams (mixtures) is an evolving area of toxicology…A review authored by Nina Cedergreen tested 136 pesticide binary mixtures (two pesticides combined) and reported that concentration addition explained toxic effects in the vast majority of combinations. Synergism (defined as a multiplicative, or enhanced, effect) explained toxic effects in 7% of combinations studied. Synergistic effects could reach 10 times the effect of additive effects.”