Standard Article

Biological Control

  1. Leslie C. Lewis

Published Online: 15 APR 2003

DOI: 10.1002/047126363X.agr340

Encyclopedia of Agrochemicals

Encyclopedia of Agrochemicals

How to Cite

Lewis, L. C. 2003. Biological Control. Encyclopedia of Agrochemicals. .

Author Information

  1. Agricultural Research Service, USDA, Ankeny, Iowa 50021, and Iowa State University, Ames, Iowa 50011, United States

Publication History

  1. Published Online: 15 APR 2003


Biological control is the action of natural enemies in maintaining another organism's population density at a lower level than would otherwise occur. In this article, however, the traditional definition has been expanded to include chemicals that duplicate or mimic natural ones. The major effort in biological control has been focused on the suppression of populations of pest insects. However, biological control of weeds and plant pathogens is a very active area of research.


  • biological control;
  • parasitoids;
  • insect predators;
  • entomopathogens;
  • bacteria;
  • fungi;
  • nematodes;
  • phytophagus insects