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Ultraviolet-B radiation and nitrogen effects on growth and yield of maize under Mediterranean field conditions

  • Carlos M. Correia
  • João F. Coutinho
  • Lars Olof Björn
  • José M. G. Torres-Pereira
Publiceringsår: 2000
Språk: Engelska
Sidor: 117-125
Publikation/Tidskrift/Serie: European Journal of Agronomy
Volym: 12
Nummer: 2
Dokumenttyp: Artikel i tidskrift
Förlag: Elsevier


The effects of an increase in UV-B radiation on growth and yield of maize (Zea mays L.) were investigated at four levels of applied nitrogen (0, 100, 200 and 300 kg ha−1 of N) under Mediterranean field conditions. The experiment simulated a 20% stratospheric ozone depletion over Portugal. Enhanced UV-B and N deficiency decreased yield and total biomass production by 22–49%. High UV-B dose reduced yield, total biomass and growth of N-fertilized maize plants but did not affect N-stressed plants to the same extent. The response of grain yield to N was smaller with enhanced UV-B radiation. The underlying mechanisms for these results are discussed.

This is the final, accepted and revised manuscript of this article. Use alternative location to go to the published article. Requires subscription.


  • Biological Sciences


  • ISSN: 1161-0301

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