Original title: 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
Authors: Opoku, Emmanuel ; Holub, Petr ; Findurová, Hana ; Veselá, Barbora ; Klem, Karel
Document type: Papers
Conference/Event: MendelNet 2021, Brno (CZ), 20211110
Year: 2021
Language: eng
Abstract: 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.
Keywords: climate change adaptation; cover crops; drought; nitrogen nutrition; photosynthetic rate
Project no.: EF16_019/0000797
Funding provider: GA MŠk
Host item entry: MendelNet 2021: Proceedings of 28th International PhD Students Conference, ISBN 978-80-7509-821-4

Institution: Global Change Research Institute AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://mnet.mendelu.cz/mendelnet2021/mnet_2021_full.pdf
Original record: https://hdl.handle.net/11104/0341464

Permalink: http://www.nusl.cz/ntk/nusl-521741


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