Barley Yield Response to Nitrogen Application under Different Weather Conditions

Barley, one of the most important crops worldwide, will be exposed to high air temperatures as a result of global warming. Since global warming is projected to progress with annual fluctuations, weather-adaptive cultivation techniques are needed in the area of barley production. This study aimed to...

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Bibliographic Details
Published in:Scientific Reports Vol. 9; no. 1; p. 8477
Main Authors: Tanaka, Ryo, Nakano, Hiroshi
Format: Journal Article
Language:English
Published: London Springer Science and Business Media LLC 11.06.2019
Nature Publishing Group UK
Nature Publishing Group
Subjects:
631/449/1736
631/449/2661/2663
Air temperature
Barley
Climate change
Crop yield
Crops, Agricultural
Crops, Agricultural - drug effects
Crops, Agricultural - growth & development
Cultivation techniques
Field tests
Global warming
Grain
High temperature
Hordeum
Hordeum - drug effects
Hordeum - growth & development
Humanities and Social Sciences
multidisciplinary
Nitrogen
Nitrogen - pharmacology
Rain
Science
Science (multidisciplinary)
Seasons
Sunlight
Temperature
Tillers
Weather
ISSN:2045-2322, 2045-2322
Online Access:Get full text
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Summary:Barley, one of the most important crops worldwide, will be exposed to high air temperatures as a result of global warming. Since global warming is projected to progress with annual fluctuations, weather-adaptive cultivation techniques are needed in the area of barley production. This study aimed to determine the effect of nitrogen (N) application rate at heading on the grain yield of barley grown under different weather conditions based on two years of field experiments. Grain yield increased markedly with increasing N application rate in the 2017–2018 cropping season but not in the 2016–2017 cropping season. In contrast, late-emerging tillers clearly increased with increasing N application rate in the 2016–2017 cropping season but not in the 2017–2018 cropping season. Plants grown in the 2016–2017 cropping season produced relatively few grains due to the short period of tillering as a results of high air temperatures compared with those grown in the 2017–2018 crop season. Thus, in the 2016–2017 cropping season, N application could be used for the production of late-emerging tillers as a consequence of the limited sink capacity, whereas, in the 2017–2018 cropping season, it could be used effectively to increase grain yield.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-44876-y