Abstract
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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Claims 7
Claim · model-written summary
Grain yield rose with nitrogen rate in 2017-2018.
- Taxon
- Barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- increasing N application ratee0
- Outcome
- Grain yielde0
- Direction
- increasede0
- Setting
- 2017-2018 cropping seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Grain yield increased markedly with increasing N application rate in the 2017-2018 cropping season but not in the 2016-2017 cropping season.”
t0“Barley”
Claim · model-written summary
Grain yield did not rise with nitrogen rate in 2016-2017.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- increasing N application ratee0
- Outcome
- Grain yielde0
- Direction
- note0
- Setting
- 2016-2017 cropping seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield increased markedly with increasing N application rate in the 2017-2018 cropping season but not in the 2016-2017 cropping season.”
t0“Barley”
Claim · model-written summary
Late tillers increased with nitrogen rate in 2016-2017.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- increasing N application ratee0
- Outcome
- late-emerging tillerse0
- Direction
- increasede0
- Setting
- 2016-2017 cropping seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“late-emerging tillers clearly increased with increasing N application rate in the 2016-2017 cropping season but not in the 2017-2018 cropping season”
t0“Barley”
Claim · model-written summary
Late tillers did not increase with nitrogen rate in 2017-2018.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- increasing N application ratee0
- Outcome
- late-emerging tillerse0
- Direction
- note0
- Setting
- 2017-2018 cropping seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“late-emerging tillers clearly increased with increasing N application rate in the 2016-2017 cropping season but not in the 2017-2018 cropping season”
t0“Barley”
Claim · model-written summary
The hot 2016-2017 season produced relatively few grains compared with 2017-2018.
- Taxon
- BarleyHordeum vulgaret0
- Outcome
- grainse0
- Direction
- relatively fewe0
- Qualifier
- high air temperaturese0
- Comparator
- 2017-2018 crop seasone0
- Setting
- 2016-2017 cropping seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
t0“Barley”
Claim · model-written summary
Nitrogen may support late tillers in a season with limited sink capacity.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- N applicatione0
- Outcome
- production of late-emerging tillerse0
- Setting
- 2016-2017 cropping seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
t0“Barley”
Claim · model-written summary
Nitrogen may increase grain yield in 2017-2018-like conditions.
- Taxon
- BarleyHordeum vulgaret0
- Outcome
- increase grain yielde0
- Setting
- 2017-2018 cropping seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the 2017-2018 cropping season, it could be used effectively to increase grain yield”
t0“Barley”
The same questions in other papers
nitrogen · yield · Hordeum vulgare (barley)Positive and negative results
251 papers in the same direction as this paper · 44 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- positive
- positive
295 papers more in this group
See all 299 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.