Název: Interactive effects of adaptation technology, based on no-till sowing into the mulch of cover crop residues, and nitrogen nutrition on photosynthetic performance of maize under drought stress
Autoři: Opoku, Emmanuel ; Holub, Petr ; Findurová, Hana ; Veselá, Barbora ; Klem, Karel
Typ dokumentu: Příspěvky z konference
Konference/Akce: MendelNet 2021, Brno (CZ), 20211110
Rok: 2021
Jazyk: eng
Abstrakt: The aim of this study was to evaluate the interactive effect of adaptation technology based on no-till sowing into cover crop mulch and nitrogen nutrition on photosynthetic performance of maize under short term drought stress induced by rain-out shelters. The experiment was established in two locations in the same climatic condition but differing in soil fertility. The negative effect of drought on CO2 assimilation rate was modulated by nitrogen nutrition. However, while nitrogen nutrition led to alleviating effect at the location with higher fertility, the opposite effect was found at the site with lower fertility. Adaptation technology had only a minor impact on photosynthetic response to drought, but it generally increased CO2 assimilation rate at the site with higher soil fertility and decreased at the site with lower soil fertility. We can conclude that adaptation technology, despite of assumptions, did not significantly change the resilience of maize to drought, and probably longer use of such technology is required to improve soil water retention and thus also balanced supply of water to plants. \nAt the same time, we did not find a negative impact of adaptation technology on photosynthesis which can be related to cooler soil during maize emergence and slower mineralization, although the use of adaptation technology seems to be more effective in soils with higher fertility.
Klíčová slova: climate change adaptation; cover crops; drought; nitrogen nutrition; photosynthetic rate
Číslo projektu: EF16_019/0000797
Poskytovatel projektu: GA MŠk
Zdrojový dokument: MendelNet 2021: Proceedings of 28th International PhD Students Conference, ISBN 978-80-7509-821-4

Instituce: Ústav výzkumu globální změny AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: https://mnet.mendelu.cz/mendelnet2021/mnet_2021_full.pdf
Původní záznam: https://hdl.handle.net/11104/0341464

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-521741


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav výzkumu globální změny
Konferenční materiály > Příspěvky z konference