Abstract
Abstract The importance of percent protein in oats ( Avena sativa L.) as a food and feed grain has resulted in the recent development of cultivars with an inherently high percent of groat protein. The need to determine the effects of N fertilization as an additional means of increasing the percent protein prompted experiments to determine responses to fertilizer N of 21 oat cultivars differing widely in percent groat protein and several agronomic traits. Two N treatments: one, no added N (40 to 50 kg available N/ha in the soil); and two, 110 kg N/ha in a split application were assigned at random to main plots. The 21 cultivars (19 of A. sativa and 2 of A. sativa × Avena sterilis L.) were assigned at random to subplots. Application of N resulted in significant increases in plant height, lodging score, percent protein, and yield; it did not affect heading date or seed weight; and it reduced test weight. Short‐strawed types increased in plant height more with N application than several taller cultivars although plant height increases were greatest for other tall types. Lodging scores of weaker strawed cultivars did not always increase more with N application than those of stronger strawed cultivars. Percent protein in certain low protein cultivars increased more than that of some high protein cultivars with fertilizer N. A given cultivar may not respond similarly to N for percent protein and/or yield. More extensive testing of potential new cultivars to determine specific fertility × cultivar interactions is recommended.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
Nitrogen significantly increased oat plant height.
- Taxon
- Avena sativa L.
Avena sativae1 - Treatment
- Ne0
- Outcome
- plant heighte0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of N resulted in significant increases in plant height, lodging score, percent protein, and yield”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Nitrogen significantly increased oat lodging score.
- Taxon
- Avena sativa L.Avena sativae1
- Treatment
- Ne0
- Outcome
- lodging scoree0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of N resulted in significant increases in plant height, lodging score, percent protein, and yield”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Nitrogen significantly increased oat percent protein.
- Taxon
- Avena sativa L.Avena sativae1
- Treatment
- Ne0
- Outcome
- percent proteine0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of N resulted in significant increases in plant height, lodging score, percent protein, and yield”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Nitrogen significantly increased oat yield.
- Taxon
- Avena sativa L.Avena sativae1
- Treatment
- Ne0
- Outcome
- yielde0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of N resulted in significant increases in plant height, lodging score, percent protein, and yield”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Nitrogen did not affect oat heading date.
- Taxon
- Avena sativa L.Avena sativae1
- Treatment
- Ne2
- Outcome
- heading datee0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it did not affect heading date or seed weight”
e1“oats ( Avena sativa L.)”
e2“Application of N”
Claim · model-written summary
Nitrogen did not affect oat seed weight.
- Taxon
- Avena sativa L.Avena sativae1
- Treatment
- Ne2
- Outcome
- seed weighte0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it did not affect heading date or seed weight”
e1“oats ( Avena sativa L.)”
e2“Application of N”
Claim · model-written summary
Nitrogen reduced oat test weight.
- Taxon
- Avena sativa L.Avena sativae1
- Treatment
- Ne2
- Outcome
- test weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it reduced test weight”
e1“oats ( Avena sativa L.)”
e2“Application of N”
Claim · model-written summary
Some short-strawed oat types increased more in height under nitrogen than several taller cultivars.
- Taxon
- Avena sativa L.Avena sativae1
- Material
- Short‐strawed typese0
- Treatment
- N applicatione0
- Outcome
- plant heighte0
- Direction
- increasede0
- Comparator
- several taller cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Short‐strawed types increased in plant height more with N application than several taller cultivars”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Other tall oat types had the greatest height increases under nitrogen.
- Taxon
- Avena sativa L.Avena sativae1
- Material
- other tall typese0
- Treatment
- N applicatione2
- Outcome
- plant height increasese0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height increases were greatest for other tall types”
e1“oats ( Avena sativa L.)”
e2“more with N application than several taller cultivars”
Claim · model-written summary
Weaker-strawed cultivars did not consistently have larger lodging score increases with nitrogen than stronger-strawed cultivars.
- Taxon
- Avena sativa L.Avena sativae1
- Material
- weaker strawed cultivarse0
- Treatment
- N applicatione0
- Outcome
- Lodging scorese0
- Direction
- did not always increase moree0
- Comparator
- stronger strawed cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lodging scores of weaker strawed cultivars did not always increase more with N application than those of stronger strawed cultivars”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Certain low protein oat cultivars gained more protein with nitrogen than some high protein cultivars.
- Taxon
- Avena sativa L.Avena sativae1
- Material
- certain low protein cultivarse0
- Treatment
- fertilizer Ne0
- Outcome
- Percent proteine0
- Direction
- increased moree0
- Comparator
- some high protein cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent protein in certain low protein cultivars increased more than that of some high protein cultivars with fertilizer N”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
A cultivar may respond differently to nitrogen for protein content and yield.
- Taxon
- Avena sativa L.Avena sativae1
- Outcome
- may not respond similarly to N for percent protein and/or yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A given cultivar may not respond similarly to N for percent protein and/or yield”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
The authors recommend broader testing for cultivar by fertility interactions.
- Taxon
- Avena sativa L.Avena sativae1
- Outcome
- More extensive testing of potential new cultivars to determine specific fertility × cultivar interactionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More extensive testing of potential new cultivars to determine specific fertility × cultivar interactions is recommended”
e1“oats ( Avena sativa L.)”
The same questions in other papers
nitrogen · quality: grain · Avena sativa (oats)Results differ
8 papers in the same direction as this paper · 12 in the opposite direction
- no effect
- positive
- positive
17 papers more in this group
See all 21 papers →nitrogen · quality: protein · Avena sativa (oats)Results differ
23 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
22 papers more in this group
See all 26 papers →nitrogen · growth · Avena sativa (oats)Positive and negative results
37 papers in the same direction as this paper · 10 in the opposite direction
- negative
- no effect
- negative
44 papers more in this group
See all 48 papers →nitrogen · yield · Avena sativa (oats)Positive and negative results
104 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
112 papers more in this group
See all 116 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.