Changes in vertical distribution of spectral reflectance within Spring barley canopy as an indicator of nitrogen nutrition, canopy structure and yield parametrs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F14%3A00430099" target="_blank" >RIV/67179843:_____/14:00430099 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.2478/agri-2014-0006" target="_blank" >http://dx.doi.org/10.2478/agri-2014-0006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/agri-2014-0006" target="_blank" >10.2478/agri-2014-0006</a>

Result language

angličtina

Original language name

Changes in vertical distribution of spectral reflectance within Spring barley canopy as an indicator of nitrogen nutrition, canopy structure and yield parametrs

Original language description

The main objective of this study was to evaluate the spectral reflectance in the vertical profile of spring barley canopy at the booting growth stage and to determine how the reflectance gradient changes in relation to crop density and nitrogen (N) nutrition. Vertical gradients of spectral reflectance were studied in field trials with three sowing densities (2, 4 and 6 million of germinating seeds/ha) and two levels of N nutrition (0 and 90 kg/ha). It was found that differences in vegetation indices caused by N nutrition are most pronounced in the second and third leaf from the top, and these increase with increasing sowing density. The vertical gradient of reflectance, specifically the ratio between the leaves F-3/F-1 for vegetation indices based on red-edge reflectance, represents a reliable indicator of number of ears per area unit (R = ?0.87 for Normalised Red Edge-Red Index (NRERI) and ?0.93 for Zarco-Tejada and Miller Simple Ratio Index (ZM)). A close relationship to ear producti

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GC - Plant growing, crop rotation

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Agriculture (Poľnohospodárstvo)

ISSN

0551-3677

e-ISSN

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Volume of the periodical

60

Issue of the periodical within the volume

2

Country of publishing house

SK - SLOVAKIA

Number of pages

10

Pages from-to

50-59

UT code for WoS article

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EID of the result in the Scopus database

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