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Estimating the water use efficiency of spring barley using crop models
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SYSNO ASEP 0495404 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Estimating the water use efficiency of spring barley using crop models Tvůrce(i) Pohanková, Eva (UEK-B) RID, SAI, ORCID
Hlavinka, Petr (UEK-B) RID, ORCID, SAI
Orság, Matěj (UEK-B) RID, SAI, ORCID
Takáč, J. (SK)
Kersebaum, K. C. (DE)
Gobin, A. (BE)
Trnka, Miroslav (UEK-B) RID, ORCID, SAIZdroj.dok. Journal of Agricultural Science. - : Cambridge University Press - ISSN 0021-8596
Roč. 156, jul (2018), s. 628-644Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova spring barley ; crop models ; climate change impacts ; Czech Republic Vědní obor RIV GC - Pěstování rostlin, osevní postupy Obor OECD Agronomy, plant breeding and plant protection CEP QJ1610072 GA MZe - Ministerstvo zemědělství GA16-16549S GA ČR - Grantová agentura ČR LO1415 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UEK-B - RVO:86652079 UT WOS 000458503500005 EID SCOPUS 85060186237 DOI 10.1017/S0021859618000060 Anotace In the current study, simulations by five crop models (WOFOST, CERES-Barley, HERMES, DAISY and AQUACROP) were compared for 7–12 growing seasons of spring barley (Hordeum vulgare) at three sites in the Czech Republic. The aims were to compare how various process-based crop models with different calculation approaches simulate different values of transpiration (Ta) and evapotranspiration (ET) based on the same input data and compare the outputs of these simulations with reference data. From the outputs of each model, the water use efficiency (WUE) from Ta (WUETa) and from actual ET (WUEETa) was calculated for grain yields and above-ground biomass yield. The results of the first part of the study show that the model with the Penman approach for calculating ET simulates lower actual ET (ETa) sums, at an average of 250 mm during the growing season, than other models, which use the Penman–Monteith approach and simulate 330 mm on average during the growing season. In the second part of the current study, WUE reference values in the range 1.9–2.4 kg/m3 were calculated for spring barley and grain yield. Values of WUETa/WUEETa calculated from the outputs of individual models for grain yields and above-ground biomass yields ranged from 2.0/1.0 to 5.9/3.8 kg/m3 with an average value of 3.2/2.0 kg/m3 and from 3.9/2.1 to 10.5/6.8 kg/m3 with an average value of 6.5/4.0 kg/m3, respectively. The results confirm that the average values of all models are nearest to actual values. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2019
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