For example, rotenone, an insecticide derived from a tropical root called derris, is as poisonous to humans as organophosphate chemical pesticides.    From Wordnik.com.  [Organic Gardener's Composting] Reference

Cropping systemIncreasing the woody contents in leaf litterExamples of indigenous agroforestry systems: Use of derris as botanical pesticide.    From Wordnik.com.  [Chapter 15] Reference

In the tropics, people traditionally harvest great quantities of fish by tossing a handful of powdered derris (a root containing rotenone) into the water, waiting a few minutes, and then scooping up stunned, dead, and dying fish by the ton.    From Wordnik.com.  [Organic Gardener's Composting] Reference

MessageWorkshop to reviseList of participantsCurrent program thrusts in Upland developmentDegradation of the uplandsNutrient cycles in upland farmsEstablishing an swcsystemFarm management practices that reinforce SWCTraditional soil and water conservation (SWC) technologiesOptions for contour farming: Land management practices for improved water conservationIn-row tillageMaking an A-frameControlling Cogon and TalahibUse of derris as botanical pesticideFire control in the uplandsCultural management of pest infestationOrganic fertilizer sources: BiofertilizersSelection of cover cropsBatao in the upland.    From Wordnik.com.  [Chapter 16] Reference