Ultraviolet-B radiation and nitrogen effects on growth and yield of maize under Mediterranean field conditions
Author
Summary, in English
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.
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This is the final, accepted and revised manuscript of this article. Use alternative location to go to the published article. Requires subscription.
Department/s
Publishing year
2000
Language
English
Pages
117-125
Publication/Series
European Journal of Agronomy
Volume
12
Issue
2
Full text
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Document type
Journal article
Publisher
Elsevier
Topic
- Biological Sciences
Status
Published
ISBN/ISSN/Other
- ISSN: 1161-0301