Interactive effects of water deficit and nitrogen nutrition on winter wheat. Remote sensing methods for their detection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F18%3A43913978" target="_blank" >RIV/62156489:43210/18:43913978 - isvavai.cz</a>
Alternative codes found
RIV/86652079:_____/18:00496363
Result on the web
<a href="https://doi.org/10.1016/j.agwat.2018.08.004" target="_blank" >https://doi.org/10.1016/j.agwat.2018.08.004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.agwat.2018.08.004" target="_blank" >10.1016/j.agwat.2018.08.004</a>
Alternative languages
Result language
angličtina
Original language name
Interactive effects of water deficit and nitrogen nutrition on winter wheat. Remote sensing methods for their detection
Original language description
Water and nitrogen (N) deficit are globally the most frequently limiting factors for agricultural crops, while both often occur together. To evaluate the interactive effects of water deficit and N nutrition on remote sensing data, rainout shelter field experiments were conducted in winter wheat during 2013-2014. Canopy spectral reflectance and infrared thermal imaging parameters were correlated to biochemical, physiological, morphological and production characteristics. Correlation analysis revealed that stomatal response to water deficit is best estimated using the NPCI (Normalized Pigment Chlorophyll Index) vegetation index and also by the CWSI (Crop Water Stress Index) thermal index. A variety of vegetation indices can be used to estimate grain yield, among which the best-performing is the Normalized Red Edge-Red Index (NRERI). That index shows the highest correlation irrespective of water deficit and N nutrition. Although none of the indices provided good detection of N content in plants, the total N uptake in wheat grain was reliably estimated by the TCARI/OSAVI (Transformed Chlorophyll Absorption Reflectance Index/Optimized Soil-Adjusted Vegetation Index). The results demonstrated that utilization of N for yield or grain protein formation was largely determined by water availability, and the relationships between vegetation indices and grain protein content thus have a distinct slope under water deficit. In summary, the spectral and thermal indices can provide satisfactory estimation, irrespective of interactions between water and N deficit, for grain yield, N uptake, and stomatal responses. However, when estimating the grain protein content, the water availability should be considered.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40101 - Agriculture
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Agricultural Water Management
ISSN
0378-3774
e-ISSN
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Volume of the periodical
210
Issue of the periodical within the volume
30 November
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
14
Pages from-to
171-184
UT code for WoS article
000445715200019
EID of the result in the Scopus database
2-s2.0-85051626045