Persons at MENDELU


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Ing. Jaroslav Záhora, CSc.
Identification number: 3041
 
Assistant Professor - Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition (FA)

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HOLUB, P. -- KLEM, K. -- TŮMA, I. -- VAVŘÍKOVÁ, J. -- SURÁ, K. -- VESELÁ, B. -- URBAN, O. -- ZÁHORA, J. Application of organic carbon affects mineral nitrogen uptake by winter wheat and leaching in subsoil: Proximal sensing as a tool for agronomic practice. Science of the Total Environment. 2020. v. 717, no. 15 May, ISSN 0048-9697. URL: https://doi.org/10.1016/j.scitotenv.2020.137058

Original name: Application of organic carbon affects mineral nitrogen uptake by winter wheat and leaching in subsoil: Proximal sensing as a tool for agronomic practice
Czech name:
Written by (author): Petr Holub
Karel Klem
Ing. Ivan Tůma, Ph.D.
Ing. Jana Vavříková
Kateřina Surá
Barbora Veselá
Otmar Urban
Ing. Jaroslav Záhora, CSc.
Department: Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition
Kind of publication:
article in a professional periodical
Periodical:
Science of the Total Environment
Nature of article: paper
Volume no. (year):
717
Periodical number within the volume:
15 May
Year of publication:
2020
Starting page:
Up to page:
Number of pages: 12
Sub-specification:
článek je obsažen v databázi Web of Science
UT code by Web of Science:
EID code by Scopus:
Form of publication:
printed version
Original language:
English
Description in original language:
We tested the hypothesis that application of stable forms of organic carbon (C) into the soil reduces leaching of nitrogen (N). We also examined the potential to estimate N leaching employing N-sensitive spectral reflectance indices. During three growing seasons 2013-2015, field experiment at two experimental sites combining application of distinct N doses (0 (N0), 35 (N35), 70 (N70), and 140 (N140) kg N haMINUS SIGN 1) and two stable forms of organic C (lignohumate and compost) was established to measure N uptake by winter wheat and its leaching to subsoil layers. The spectral reflectance at canopy level was measured simultaneously with N content in leaf dry matter at the beginning of the grain filling phase. At full maturity, the above-ground biomass, grain yield, and grain protein content were evaluated. That data was used to calculate N uptake in grain. The N140 dose led to increased N uptake by grain of 64% and 73% in the wetter years 2013 and 2014, respectively, and even by 118% in the drier year 2015 in comparison with the N0 treatment. N leaching to subsoil increased substantially with higher N dose, but only in wetter years 2013 (by 74%) and 2014 (by 87%). By contrast, no effect of N dose on leached N was found in the dry year 2015. The application of organic C along with the N140 dose substantially reduced N leaching by 26% and 29% in 2014 and 2015, respectively. Moreover, we demonstrated that normalized red-edge spectral reflectance index (NRERI) is able to predict N uptake by wheat and it can serve as an indicator of N leaching in heavy-rainfall years. Our results thus point towards possible agronomic practices and use of remote-sensing techniques to reduce groundwater contamination by N-based fertilizers.
Description in English:
Description in Czech:
Year of submission:
2020
Year of transmission:
RIV identification number:
URL:
https://doi.org/10.1016/j.scitotenv.2020.137058
 
Entry made by:
Last change:
02/19/2020 10:14 (Markéta Hejčová, DiS.)

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Source specification:

Science of the Total Environment. Amsterdam: ISSN 0048-9697.

Original name:
Science of the Total Environment
Czech name:
Written by (author):
Kind of publication:
magazine
ISSN:
0048-9697
Country of publisher:
Kingdom of the Netherlands
Place of publishing: Amsterdam
Publisher:
Elsevier BV Radarweg 29, PO Box 211 Amsterdam, 1000 AE Netherlands Phone: 31-20-4853757
URL:
http://www.elsevier.com/locate/scitotenv
Reviewed magazine: no
Original language:
English
Description in original language:
Description in English:
Description in Czech:
 
Entry made by:
Last change: 01/24/2013 07:43 (Lenka Baláková)

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