Advanced

Ultraviolet-B radiation and nitrogen affect nutrient concentrations and the amount of nutrients acquired by above-ground organs of maize

Correia, Carlos M.; Coutinho, João F; Bacelar, Eunice A.; Goncalves, Berta M.; Björn, Lars Olof LU and Pereira, José Moutinho (2012) In Scientific World Journal 2012.
Abstract
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... (More)
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 Nstressed 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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ultraviolet-B radiation, nutrition, maoze
in
Scientific World Journal
volume
2012
publisher
Hindawi Publishing Corporation
external identifiers
  • wos:000305737900001
  • scopus:84862331177
ISSN
2356-6140
DOI
10.1100/2012/608954
project
Photobiology
language
English
LU publication?
yes
id
5c6b5438-6ec5-442a-aa74-a2585971ac6f (old id 2860460)
date added to LUP
2012-09-03 13:59:22
date last changed
2017-08-13 04:04:29
@article{5c6b5438-6ec5-442a-aa74-a2585971ac6f,
  abstract     = {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 Nstressed 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.},
  articleno    = {608954},
  author       = {Correia, Carlos M. and Coutinho, João F and Bacelar, Eunice A. and Goncalves, Berta M. and Björn, Lars Olof and Pereira, José Moutinho},
  issn         = {2356-6140},
  keyword      = {ultraviolet-B radiation,nutrition,maoze},
  language     = {eng},
  publisher    = {Hindawi Publishing Corporation},
  series       = {Scientific World Journal},
  title        = {Ultraviolet-B radiation and nitrogen affect nutrient concentrations and the amount of nutrients acquired by above-ground organs of maize},
  url          = {http://dx.doi.org/10.1100/2012/608954},
  volume       = {2012},
  year         = {2012},
}