Paper · 1969 · Journal of the Science of Food and Agriculture

Effect of applying increasing levels of nitrogen to ryegrass: I.—Composition of various nitrogenous fractions and free amino acids

A. K. Goswami; J. S. Willcox

9
claims
19
verbatim quotes
33
citations
2
research areas
—
Not open access

Abstract

Abstract Heavy application of fertiliser N caused a rise in the non‐protein N content of the plant which was accompanied by a sharp rise in the free amino acid N, other organic nitrogenous constituents and nitrate N. The peptide N fraction of the plant was high when no nitrogen was applied, decreased with moderate supply of N and rose again slightly when heavy doses of N were applied. There was a steady increase in true‐protein content with increase of N application; without N, accumulation of asparagine was noted. With a limited supply of N the dicarboxylic amino acids increased and also there was a considerable reduction of asparagine. Heavy fertilisation with N increased considerably the contents of asparagine and glutamine, the increase of glutamine being greater than that of asparagine, and was also accompanied by an increased content of all the amino acids.

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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 9

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Heavy nitrogen fertilizer increased ryegrass non-protein nitrogen and free amino acid nitrogen.

Taxon
ryegrassLoliumt0
Treatment
Heavy application of fertiliser Ne0
Outcome
non‐protein N content of the plante0
Direction
risee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Heavy application of fertiliser N caused a rise in the non‐protein N content of the plant which was accompanied by a sharp rise in the free amino acid N, other organic nitrogenous constituents and nitrate N.”

✓ located verbatim in the source · abstract, characters 9–216 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Heavy nitrogen fertilizer increased ryegrass other organic nitrogenous constituents and nitrate nitrogen.

Taxon
ryegrassLoliumt0
Treatment
Heavy application of fertiliser Ne0
Outcome
other organic nitrogenous constituents and nitrate Ne0
Direction
risee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Heavy application of fertiliser N caused a rise in the non‐protein N content of the plant which was accompanied by a sharp rise in the free amino acid N, other organic nitrogenous constituents and nitrate N.”

✓ located verbatim in the source · abstract, characters 9–216 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑
Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

Ryegrass peptide nitrogen was high without nitrogen, declined at moderate nitrogen and rose slightly at heavy nitrogen doses.

Taxon
ryegrassLoliumt0
Outcome
peptide N fractione0
Direction
decreasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The peptide N fraction of the plant was high when no nitrogen was applied, decreased with moderate supply of N and rose again slightly when heavy doses of N were applied.”

✓ located verbatim in the source · abstract, characters 217–387 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ryegrass true-protein content steadily increased with nitrogen application.

Taxon
ryegrassLoliumt0
Treatment
increase of N applicatione0
Outcome
true‐protein contente0
Direction
steady increasee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“There was a steady increase in true‐protein content with increase of N application”

✓ located verbatim in the source · abstract, characters 388–470 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Ryegrass accumulated asparagine without nitrogen fertilizer.

Taxon
ryegrassLoliumt0
Outcome
accumulation of asparaginee0
Qualifier
without Ne0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“without N, accumulation of asparagine was noted.”

✓ located verbatim in the source · abstract, characters 472–520 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Limited nitrogen increased ryegrass dicarboxylic amino acids.

Taxon
ryegrassLoliumt0
Treatment
limited supply of Ne0
Outcome
dicarboxylic amino acidse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“With a limited supply of N the dicarboxylic amino acids increased”

✓ located verbatim in the source · abstract, characters 521–586 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Limited nitrogen considerably reduced ryegrass asparagine.

Taxon
ryegrassLoliumt0
Treatment
limited supply of Ne0
Outcome
asparaginee0
Direction
considerable reductione0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“With a limited supply of N the dicarboxylic amino acids increased and also there was a considerable reduction of asparagine.”

✓ located verbatim in the source · abstract, characters 521–645 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Heavy nitrogen fertilizer increased ryegrass asparagine and glutamine, with a greater glutamine increase.

Taxon
ryegrassLoliumt0
Treatment
Heavy fertilisation with Ne0
Outcome
contents of asparagine and glutaminee0
Direction
increased considerablye0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Heavy fertilisation with N increased considerably the contents of asparagine and glutamine, the increase of glutamine being greater than that of asparagine”

✓ located verbatim in the source · abstract, characters 646–801 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Heavy nitrogen fertilizer increased ryegrass content of all amino acids.

Taxon
ryegrassLoliumt0
Treatment
Heavy fertilisation with Ne1
Outcome
content of all the amino acidse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lolium
Lolium · Taxon · picture of the genus (one of its species)Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“was also accompanied by an increased content of all the amino acids.”

✓ located verbatim in the source · abstract, characters 807–875 · show in text ↑
e1

“Heavy fertilisation with N increased considerably the contents of asparagine and glutamine”

✓ located verbatim in the source · abstract, characters 646–736 · show in text ↑
t0

“ryegrass”

✓ located verbatim in the source · title, characters 52–60 · show in text ↑

nitrogen · molecular: metabolites · LoliumPositive and negative results

7 papers: 5 positive, 2 negative or no effect

4 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. no effect
  3. positive

3 papers more in this group

See all 7 papers →

fertilization · nutrient: content · LoliumPositive and negative results

35 papers: 25 positive, 10 negative or no effect

24 papers in the same direction as this paper · 8 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

31 papers more in this group

See all 35 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.