Ultraviolet-B Radiation and Nitrogen Affect Nutrient Concentrations and the Amount of Nutrients Acquired by Above-Ground Organs of Maize
Joint Authors
Correia, Carlos M.
Gonçalves, Berta M.
Moutinho Pereira, José
Bacelar, Eunice A.
Coutinho, João F.
Björn, Lars Olof
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-01
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
UV-B radiation effects on nutrient concentrations in above-ground organs of maize were investigated at silking and maturity at different levels of applied nitrogen under field conditions.
The experiment simulated a 20% stratospheric ozone depletion over Portugal.
At silking, UV-B increased N, K, Ca, and Zn concentrations, whereas at maturity Ca, Mg, Zn, and Cu increased and N, P and Mn decreased in some plant organs.
Generally, at maturity, N, Ca, Cu, and Mn were lower, while P, K, and Zn concentrations in stems and nitrogen-use efficiency (NUE) were higher in N-starved plants.
UV-B and N effects on shoot dry biomass were more pronounced than on nutrient concentrations.
Nutrient uptake decreased under high UV-B and increased with increasing N application, mainly at maturity harvest.
Significant interactions UV-B x N were observed for NUE and for concentration and mass of some elements.
For instance, under enhanced UV-B, N, Cu, Zn, and Mn concentrations decreased in leaves, except on N-stressed plants, whereas they were less affected by N nutrition.
In order to minimize nutritional, economical, and environmental negative consequences, fertiliser recommendations based on element concentration or yield goals may need to be adjusted.
American Psychological Association (APA)
Correia, Carlos M.& Coutinho, João F.& Bacelar, Eunice A.& Gonçalves, Berta M.& Björn, Lars Olof& Moutinho Pereira, José. 2012. Ultraviolet-B Radiation and Nitrogen Affect Nutrient Concentrations and the Amount of Nutrients Acquired by Above-Ground Organs of Maize. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-484798
Modern Language Association (MLA)
Correia, Carlos M.…[et al.]. Ultraviolet-B Radiation and Nitrogen Affect Nutrient Concentrations and the Amount of Nutrients Acquired by Above-Ground Organs of Maize. The Scientific World Journal No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-484798
American Medical Association (AMA)
Correia, Carlos M.& Coutinho, João F.& Bacelar, Eunice A.& Gonçalves, Berta M.& Björn, Lars Olof& Moutinho Pereira, José. Ultraviolet-B Radiation and Nitrogen Affect Nutrient Concentrations and the Amount of Nutrients Acquired by Above-Ground Organs of Maize. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-484798
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-484798