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Safe Use of Pesticides in Food Production; a Report [by] W.J. Darby, Chairman ... [Et Al.] (1956) / Chapter Skim
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Why develop new pesticides?
Pages 1-2

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... Plants in North America are attacked by about 3000 species of insects and as many plant disease agents. The destruction caused by these pests has increased as crop culture has been intensified and land repeatedly sown to similar crops, and as varieties have been bred to genetically pure lines to increase productivity.
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From page 2...
... A comparable situation developed in the Midwest when millions of acres of sweet corn were jeopardized by the European corn borer during the period 1940-1945, and sweet corn production was abandoned in many areas. Only the development of suitable spray programs for tomatoes and corn restored the crops to an economically sound basis in these two areas.
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Key Terms

  • million pounds
  • sweet corn
  • biologically active
  • active materials
  • crop culture

  • control specialists
  • control measures
  • european corn
  • control pests
  • control practices

  • organic insecticide
  • lessen pest
  • synthetic organic
  • million dollars
  • quality sufficiently

  • ten states
  • corn restored
  • practical means
  • spray programs
  • tomato crop

  • blight fungus
  • fed adequately
  • widespread application
  • lar crops
  • inorganic compounds

  • insecticide produced
  • eastern united
  • using chemicals
  • economy suffers
  • continued improvement


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