Comparison of non-direct methods for estimation of nitrogen status and canopy structure in spring barley

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F12%3A43907787" target="_blank" >RIV/62156489:43210/12:43907787 - isvavai.cz</a>
Result on the web
<a href="https://mnet.mendelu.cz/mendelnet2012/mnet_2012_full.pdf" target="_blank" >https://mnet.mendelu.cz/mendelnet2012/mnet_2012_full.pdf</a>
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Comparison of non-direct methods for estimation of nitrogen status and canopy structure in spring barley
Original language description
The main objective of this study was to compare numerous vegetation indices derived from reflectance measurements in range 350 - 2500 nm (using the instrument FieldSpec 3 equipped with fiber optics) with in-vivo measured flavonols and chlorophyll content and derived Nitrogen Balance Index (NBI) (using the instrument Dualex). The sensitivity of individual parameters to genotypic variability and canopy structure was tested in two spring barley varieties ('Barke' and 'Bonus') and three sowing densities (1, 3 and 5 million germinable seeds). Furthermore, the effect of UV and PAR radiation on flavonols content was studied within independent experiment to ensure robustness of the selected parameters for the diagnosis of nutritional status and structure of vegetation. The results show that content of flavonols provides more uniform outcome with less influence of sowing density, but with a certain effect of leaf age. In addition, within the variety 'Bonus' significant effect of lowest sowing density was found. It is also evident that at higher doses of nitrogen the effect on flavonol content is saturating.
Czech name
—
Czech description
—

Project
<a href="/en/project/QI111A133" target="_blank" >QI111A133: Improvement of cereal variety potential realisation using temporal and spatial analysis of stand spectral characteristic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
MendelNet 2012: Proceedings of International Ph.D. Students Conference
ISBN
978-80-7375-836-3
ISSN
—
e-ISSN
—
Number of pages
7
Pages from-to
142-148
Publisher name
Mendelova univerzita v Brně
Place of publication
Brno
Event location
Brno
Event date
Nov 21, 2012
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000366461200016

Similar results(10)