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Effects of Intercropping Systems on Environment

Poster-Presentation in “Biodiversity and Ecosystems Goods and Services”, Dürr N. and Weber V.

Intercropping

  • cultivating two or more crops in the same space at the same time
  • form of polyculture using companion planting principles

effects_of_intercropping_systems_on_environment-intercropping.jpg

Services provided by intercropping

effects_of_intercropping_systems_on_environment-serviceprovidedbyintercropping.jpg

Genetic diversity

  • physical barrier to fungal spread
  • ↑complexity & competition of pathogens
  • Induced resistance
  • > rice blast 94% less severe → no fungicides used
  • > 89% greater yield
  • LER: 1.18 ha monoculture for 1 ha mixture

Agroforestry
land use systems in which woody perennials
are integrated with crops (Gliessman 2007)

  • Increase in biodiversity
  • Soil fertility improvement
  • Socioeconomic effects

effects_of_intercropping_systems_on_environment-agroforestry.jpg

Literature:

  • Aufhammer, W. (1999). Mischanbau von Getreide- und anderen Körnerfruchtarten. Stuttgart, Verlag Eugen Ulmer.
  • Gliessman, S. R. (2007). Agroecology. The Ecology of Sustainable Food Systems. Boca Raton, London, New York, CRC Press.
  • Palmer M.W. and Maurer T.A. (1997). “Does diversity beget diversity? A case study of crops and weeds.” Journal of Vegetation Science 8: 235-240.
  • Valent, B. (2004). “Plantdisease: Underground life for rice foe.” Nature 431: 516-517.
  • Wenninger, E. J. and R. S. Inouye (2008). “Insect community response to plant diversity and productivity in a sagebrush-steppe ecosystem.” Journal of Arid Environments 72: 24-33.
  • Wolfe, M. S. (2000). “Crop strength through diversity.” Nature 406: 681-683.
  • Zhu, Y., H. Chen, et al. (2000). “Genetic diversity and disease control in rice.” Nature 406: 718-722.
December 3rd, 2008
Topic: Crop Science, Plant biodiversity Tags: None

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