Abstract
Summary Four varieties of barley, selected for characteristics which could have value in a barley variety intended primarily for animal food, were compared with the variety Proctor under two levels of irrigation and two levels of nitrogen fertilizer. The exotic varieties yielded less grain and total dry matter than the adapted varieties, but differed in their response to irrigation. This difference was due chiefly to the ability to form extra ears when irrigated and the other yield components were less affected. Nitrogen fertilizer did not affect yield, although more ears were formed in the highlevel than the low-level treatment. The yield of nitrogen in the whole plant and in the yield of grain nitrogen were increased by high-nitrogen fertilizer and one of the exotic varieties was found to be capable of high yields of both grain nitrogen and total nitrogen, but there were no varietal differences in the response to nitrogen fertilizer. The varietal differences in response to irrigation are briefly discussed and related to development and possible drought resistance. The nitrogen yield of the grain is analysed in terms of total nitrogen uptake and distribution within the plant and the possibility of using the variation in these characteristics in a breeding programme is raised.
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Claims 12
Claim · model-written summary
Exotic barley varieties yielded less grain than adapted varieties.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Material
- exotic varietiese0
- Outcome
- graine0
- Direction
- lesse0
- Comparator
- adapted varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The exotic varieties yielded less grain and total dry matter than the adapted varieties”
t0“barley”
Claim · model-written summary
Exotic barley varieties yielded less total dry matter than adapted varieties.
- Taxon
- barleyHordeum vulgaret0
- Material
- exotic varietiese0
- Outcome
- total dry mattere0
- Direction
- lesse0
- Comparator
- adapted varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exotic varieties yielded less grain and total dry matter than the adapted varieties”
t0“barley”
Claim · model-written summary
Varieties differed in their response to irrigation.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- irrigatione0
- Outcome
- response to irrigatione0
- Direction
- differede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but differed in their response to irrigation”
t0“barley”
Claim · model-written summary
Ability to form extra ears when irrigated chiefly explained the varietal irrigation response difference.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- This differencee0
- Qualifier
- ability to form extra ears when irrigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This difference was due chiefly to the ability to form extra ears when irrigated”
t0“barley”
Claim · model-written summary
Other yield components were less affected by irrigation.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- irrigatione1
- Outcome
- other yield componentse0
- Direction
- less affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the other yield components were less affected”
t0“barley”
e1“but differed in their response to irrigation”
Claim · model-written summary
Nitrogen fertilizer did not affect barley yield.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Nitrogen fertilizere0
- Outcome
- yielde0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilizer did not affect yield”
t0“barley”
Claim · model-written summary
High nitrogen formed more ears than low nitrogen.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- highlevele0
- Outcome
- earse0
- Direction
- moree0
- Comparator
- low-level treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more ears were formed in the highlevel than the low-level treatment”
t0“barley”
Claim · model-written summary
High nitrogen fertilizer increased nitrogen yield in the whole plant.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- high-nitrogen fertilizere0
- Outcome
- yield of nitrogen in the whole plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of nitrogen in the whole plant and in the yield of grain nitrogen were increased by high-nitrogen fertilizer”
t0“barley”
Claim · model-written summary
High nitrogen fertilizer increased grain nitrogen yield.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- high-nitrogen fertilizere0
- Outcome
- yield of grain nitrogene0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of nitrogen in the whole plant and in the yield of grain nitrogen were increased by high-nitrogen fertilizer”
t0“barley”
Claim · model-written summary
One exotic variety was capable of high grain nitrogen yield.
- Taxon
- barleyHordeum vulgaret0
- Material
- one of the exotic varietiese0
- Outcome
- grain nitrogene0
- Direction
- high yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one of the exotic varieties was found to be capable of high yields of both grain nitrogen and total nitrogen”
t0“barley”
Claim · model-written summary
One exotic variety was capable of high total nitrogen yield.
- Taxon
- barleyHordeum vulgaret0
- Material
- one of the exotic varietiese0
- Outcome
- total nitrogene0
- Direction
- high yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one of the exotic varieties was found to be capable of high yields of both grain nitrogen and total nitrogen”
t0“barley”
Claim · model-written summary
Varieties did not differ in response to nitrogen fertilizer.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- nitrogen fertilizere0
- Outcome
- response to nitrogen fertilizere0
- Direction
- no varietal differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no varietal differences in the response to nitrogen fertilizer”
t0“barley”
The same questions in other papers
fertilization · yield · Hordeum vulgare (barley)Positive and negative results
472 papers in the same direction as this paper · 66 in the opposite direction · 11 reporting no difference from an alternative
- positive
- no effect
- negative
546 papers more in this group
See all 550 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.