Transpiration and water use efficiency of maize in different soil moisture conditions.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020699%3A_____%2F21%3AN0000103" target="_blank" >RIV/00020699:_____/21:N0000103 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62156489:43210/21:43920617

Výsledek na webu

<a href="https://www.jahr.sk/uploads/10.2478_ahr-2021-0031.pdf" target="_blank" >https://www.jahr.sk/uploads/10.2478_ahr-2021-0031.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/ahr-2021-0031" target="_blank" >10.2478/ahr-2021-0031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Transpiration and water use efficiency of maize in different soil moisture conditions.

Popis výsledku v původním jazyce

Globally, agriculture accounts for 80–90% of the fresh water used by humans, and in many crop production systems; this water use is unsustainable. Irrigation of large areas of field and horticultural crops is impossible. Studies of the impact of drought on important field and horticultural crops are necessary to estimate dimensions of adaptation and mitigation measures to climate change. For this purpose, maize was monitored as a model crop in this study. In a three-year experiment (i) using the sap flow measurement method, the transpiration of maize was evaluated during flowering and grain filling, (ii) water use efficiency (WUE) was evaluated in four soil moisture conditions. The intensity of transpiration was closely correlated with the values of global radiation and vapor pressure deficit. However, soil water content was a major factor influencing transpiration under drought stress. The transpiration decreased when water content in the soil reached 28% of available water holding capacity (AWHC), but the yield of corn cobs decreased only under stress of 25% AWHC. Thus, the yield reacted less sensitively to lower water availability than transpiration. WUE increased with decreasing transpiration. Statistically significantly higher WUE was already observed at a water content of 42% AWHC, however, a higher WUE did not lead to a higher yield of corn cobs.

Název v anglickém jazyce

Transpiration and water use efficiency of maize in different soil moisture conditions.

Popis výsledku anglicky

Globally, agriculture accounts for 80–90% of the fresh water used by humans, and in many crop production systems; this water use is unsustainable. Irrigation of large areas of field and horticultural crops is impossible. Studies of the impact of drought on important field and horticultural crops are necessary to estimate dimensions of adaptation and mitigation measures to climate change. For this purpose, maize was monitored as a model crop in this study. In a three-year experiment (i) using the sap flow measurement method, the transpiration of maize was evaluated during flowering and grain filling, (ii) water use efficiency (WUE) was evaluated in four soil moisture conditions. The intensity of transpiration was closely correlated with the values of global radiation and vapor pressure deficit. However, soil water content was a major factor influencing transpiration under drought stress. The transpiration decreased when water content in the soil reached 28% of available water holding capacity (AWHC), but the yield of corn cobs decreased only under stress of 25% AWHC. Thus, the yield reacted less sensitively to lower water availability than transpiration. WUE increased with decreasing transpiration. Statistically significantly higher WUE was already observed at a water content of 42% AWHC, however, a higher WUE did not lead to a higher yield of corn cobs.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10611 - Plant sciences, botany

Projekt

<a href="/cs/project/QK1920280" target="_blank" >QK1920280: Inovace bonitačního systému zemědělských půd (BPEJ) pro potřeby státní správy.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Acta horticulturae et regiotecturae: vedecký časopis pre záhradnictvo, krajinné inženierstvo, architektúru a ekológiu = the scientific journal for horticulture, landscape and ecology

ISSN

1335-2563

e-ISSN

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Svazek periodika

24

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

5

Strana od-do

105-109

Kód UT WoS článku

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EID výsledku v databázi Scopus

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