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Derris eliptica is a species of leguminous plant from Southeast Asia and the southwest Pacific islands, including New Guinea. The roots of D. elliptica contain rotenone, a strong insecticide and fish poison.
Also known as derris powder and tuba root (in Indonesia),[2] it was formerly used as an organic insecticide used to control pests on crops such as peas. However, due to studies[which?] revealing the extreme toxicity of rotenone to which the powder is often refined, it is unsafe: in spite of its popularity with organic growers.[3][better source needed]
Derris root, when crushed, releases rotenone. Some native residents of Fiji and New Guinea practice a form of fishing in which they crush the roots and throw them into the water.[4] The stunned or killed fish float to the surface where they can be easily reached.[5]
^Fryer, J.C.F; et al. (February 1923). "A Quantitative Study Of The Insecticidal Properties Of Derris Elliptica (Tuba Root)". Annals of Applied Biology. 10 (1): 18–34. doi:10.1111/j.1744-7348.1923.tb05651.x.
