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Subject Item
n2:RIV%2F67179843%3A_____%2F13%3A00426785%21RIV14-MZE-67179843
rdf:type
n6:Vysledek skos:Concept
dcterms:description
Evapotranspiration (ET) represents the main water-loss part of the water balance in agricultural landscape. The reliable quantification of the agricultural field ET is, however, still a challenge. To calculate ET, the Bowen ratio/energy balance (BREB) method was used in this study. It is based on measurements of the temperature and humidity gradients and radiation balance with the soil heat flux. Calculated ET was further used to quantify crop coefficient (Kc). Subsequently, we analysed the crop coefficient of spring barley during one growing season since 7th May 2013 to 30th July 2013. We used the data obtained above 1-ha spring barley field in Bystřice nad Pernštejnem, Czech Republic. In particular, we investigated how Kc correlates to climatic conditions as rainfall and soil humidity and how it reflects Plant Area Index (PAI) during the year during different parts of growing season. The cumulative ET of spring barley was 228.6 mm per investigated period. For reference evapotranspiration (ETo) two different approaches were used. Typically, a reference grass cover 0.12 m high standard for Europe. On the other hand, in the USA it is common to use also alfalfa (0.50 m high). ETo of grass was 296.3 mm and ETo of alfalfa was 351.4 mm. Maximum Plant Area Index occurred in June and its value was 4.1. Mean Kc in May was 1.17 for reference grass and 1.03 for alfalfa. Similarly in June, Kc was equal to 1.16 (grass) and 1.03 (alfalfa). Finally in July, for reference grass Kc was 0.55 and 0.48 for alfalfa. The decline at the end of the growing season was caused by dry weather and ripe stage of spring barley. Evapotranspiration (ET) represents the main water-loss part of the water balance in agricultural landscape. The reliable quantification of the agricultural field ET is, however, still a challenge. To calculate ET, the Bowen ratio/energy balance (BREB) method was used in this study. It is based on measurements of the temperature and humidity gradients and radiation balance with the soil heat flux. Calculated ET was further used to quantify crop coefficient (Kc). Subsequently, we analysed the crop coefficient of spring barley during one growing season since 7th May 2013 to 30th July 2013. We used the data obtained above 1-ha spring barley field in Bystřice nad Pernštejnem, Czech Republic. In particular, we investigated how Kc correlates to climatic conditions as rainfall and soil humidity and how it reflects Plant Area Index (PAI) during the year during different parts of growing season. The cumulative ET of spring barley was 228.6 mm per investigated period. For reference evapotranspiration (ETo) two different approaches were used. Typically, a reference grass cover 0.12 m high standard for Europe. On the other hand, in the USA it is common to use also alfalfa (0.50 m high). ETo of grass was 296.3 mm and ETo of alfalfa was 351.4 mm. Maximum Plant Area Index occurred in June and its value was 4.1. Mean Kc in May was 1.17 for reference grass and 1.03 for alfalfa. Similarly in June, Kc was equal to 1.16 (grass) and 1.03 (alfalfa). Finally in July, for reference grass Kc was 0.55 and 0.48 for alfalfa. The decline at the end of the growing season was caused by dry weather and ripe stage of spring barley.
dcterms:title
Analysis of Spring Barley Actual Evapotranspiration Analysis of Spring Barley Actual Evapotranspiration
skos:prefLabel
Analysis of Spring Barley Actual Evapotranspiration Analysis of Spring Barley Actual Evapotranspiration
skos:notation
RIV/67179843:_____/13:00426785!RIV14-MZE-67179843
n6:predkladatel
n20:ico%3A67179843
n3:aktivita
n12:I n12:P
n3:aktivity
I, P(EE2.3.20.0248), P(QJ1310123)
n3:dodaniDat
n5:2014
n3:domaciTvurceVysledku
n9:5972426 n9:5539498 n9:8957924 n9:8805504 n9:4394372
n3:druhVysledku
n17:D
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
60644
n3:idVysledku
RIV/67179843:_____/13:00426785
n3:jazykVysledku
n18:eng
n3:klicovaSlova
reference evapotranspiration; Bowen ratio/energy balance method; crop coefficient; spring barley; Czech Republic
n3:klicoveSlovo
n8:Czech%20Republic n8:reference%20evapotranspiration n8:Bowen%20ratio%2Fenergy%20balance%20method n8:crop%20coefficient n8:spring%20barley
n3:kontrolniKodProRIV
[DDFC80F4DC0C]
n3:mistoKonaniAkce
Mendelova univerzita v Brně
n3:mistoVydani
Brno
n3:nazevZdroje
MendelNet 2013: Proceedings of International PhD Students Conference
n3:obor
n21:EH
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:projekt
n16:QJ1310123 n16:EE2.3.20.0248
n3:rokUplatneniVysledku
n5:2013
n3:tvurceVysledku
Žalud, Zdeněk Fischer, Milan Trnka, Miroslav Pohanková, Eva Pozníková, Gabriela
n3:typAkce
n10:CST
n3:zahajeniAkce
2013-11-20+01:00
s:numberOfPages
5
n14:hasPublisher
Mendel university
n7:isbn
978-80-7375-908-7