Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A climbing leguminous plant of Southeast Asia and the southwest Pacific Islands, whose roots are a source of rotenone.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any of various usually woody vines of the genus Derris of tropical Asia whose roots yield the insecticide rotenone; several are sources of native fish and arrow poisons

Etymologies

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Examples

  • For example, rotenone, an insecticide derived from a tropical root called derris, is as poisonous to humans as organophosphate chemical pesticides.

    Organic Gardener's Composting Steve Solomon

  • He directed his students to study fish poisons a decade or more before derris root went into mass production in the tropics as a source of rotenone, the most important biodegradable insecticide.

    One River Wade Davis 1996

  • He directed his students to study fish poisons a decade or more before derris root went into mass production in the tropics as a source of rotenone, the most important biodegradable insecticide.

    One River Wade Davis 1996

  • 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.

    Chapter 5 1992

  • 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.

    Chapter 15 1992

  • 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.

    Chapter 22 1992

  • 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.

    Chapter 4 1992

  • Cropping systemIncreasing the woody contents in leaf litterExamples of indigenous agroforestry systems: Use of derris as botanical pesticide

    Chapter 15 1992

  • 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.

    Chapter 9 1992

  • 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.

    Chapter 2 1992

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