Economic Thresholds and Injury Levels for Insect Pests of Rice

  • Michael O. Way
  • Albert A. Grigarick
  • James A. Litsinger
  • Florencia Palis
  • Prabhu Pingali
Part of the Springer Series in Experimental Entomology book series (SSEXP)


Over 90% of the world’s rice is grown in Asia where more than 100 insect species attack the crop (Norton and Way 1990). Other rice-growing areas each with a unique complex of insect pests include Latin America, Africa, Australia, Europe, and the United States. Insects are a major constraint to world rice production which must increase from current levels of 460 to 760 million tons simply to keep pace with human population growth as projected for 2020 (Woodburn 1990). On a global scale, insects decrease rice yields an estimated 26% (Cramer 1967). The economic importance of insect pests of rice is illustrated by the fact that $910 million was spent throughout the world on insecticides applied to rice in 1988 (Woodburn 1990).


Stem Borer Brown Planthopper Injury Level Economic Threshold Pest Density 
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© Springer-Verlag New York Inc. 1991

Authors and Affiliations

  • Michael O. Way
  • Albert A. Grigarick
  • James A. Litsinger
  • Florencia Palis
  • Prabhu Pingali

There are no affiliations available

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