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derris

NOUN
  1. 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

How To Use derris In A Sentence

  • The insecticidal properties of Derris roots were first discovered in 1848 and the plant was first used against the nutmeg caterpillar.
  • Besides muderrises and kadis, one other group within the learned profession deserves brief mention, namely the muftis.
  • Second, spray the tree with derris, which is widely available, when roughly half the flower petals have fallen.
  • Besides muderrises and kadis, one other group within the learned profession deserves brief mention, namely the muftis.
  • 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
  • For rotenone is no post-war insect killer cooked up in a corporate lab, but a natural product, extracted from the derris plant, and a mainstay of organic farms and gardens.
  • Cropping systemIncreasing the woody contents in leaf litterExamples of indigenous agroforestry systems: Use of derris as botanical pesticide Chapter 15
  • By the mid 1800s, the heads of chrysanthemum flowers were used to obtain pyrethrum, and rotenone was extracted from the derris plant.
  • 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
  • Jam laced with derris, camphor, citronella or pepper also makes an effective bait.
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