Is crop growth model able to reproduce drought stress caused by rain-out shelters above winter wheat?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F18%3A43913157" target="_blank" >RIV/62156489:43210/18:43913157 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/86652079:_____/18:00489763

Výsledek na webu

<a href="https://doi.org/10.11118/actaun201866010225" target="_blank" >https://doi.org/10.11118/actaun201866010225</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.11118/actaun201866010225" target="_blank" >10.11118/actaun201866010225</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Is crop growth model able to reproduce drought stress caused by rain-out shelters above winter wheat?

Popis výsledku v původním jazyce

This study evaluates drought stress effect on winter wheat. Simultaneously, the ability of the HERMES crop growth model to reproduce the process correctly was tested. The field experiment was conducted at Domanínek station in 2014 and 2015, where mobile rain-out shelters were installed on plots of winter wheat (May 2015). Precipitation was reduced in three replications and the findings were compared with results from control plots with ambient precipitation. A precipitation reduction of 93 mm led to reduced growth and decrease in grain yields. The results of this study showed that the model was able to reproduce soil moisture content well and reproduce the drought stress for crop yields of winter wheat to a certain extent. When rain-out shelters were used, real winter wheat yields were reduced by 1.7 t/ha. The model underestimated the yields for the sheltered variant by 0.67 t/ha on average against observed yields and overestimated development of leaf area for both unsheltered and sheltered variants. This overestimation was partly explained by the effect of excluded UV radiation. The outcome of this paper May help to reduce uncertainty within simulated yields of winter wheat under extreme weather conditions through a better understanding of model behavior.

Název v anglickém jazyce

Is crop growth model able to reproduce drought stress caused by rain-out shelters above winter wheat?

Popis výsledku anglicky

This study evaluates drought stress effect on winter wheat. Simultaneously, the ability of the HERMES crop growth model to reproduce the process correctly was tested. The field experiment was conducted at Domanínek station in 2014 and 2015, where mobile rain-out shelters were installed on plots of winter wheat (May 2015). Precipitation was reduced in three replications and the findings were compared with results from control plots with ambient precipitation. A precipitation reduction of 93 mm led to reduced growth and decrease in grain yields. The results of this study showed that the model was able to reproduce soil moisture content well and reproduce the drought stress for crop yields of winter wheat to a certain extent. When rain-out shelters were used, real winter wheat yields were reduced by 1.7 t/ha. The model underestimated the yields for the sheltered variant by 0.67 t/ha on average against observed yields and overestimated development of leaf area for both unsheltered and sheltered variants. This overestimation was partly explained by the effect of excluded UV radiation. The outcome of this paper May help to reduce uncertainty within simulated yields of winter wheat under extreme weather conditions through a better understanding of model behavior.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10510 - Climatic research

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

ISSN

1211-8516

e-ISSN

—

Svazek periodika

66

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

225-233

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85043703574