Abstract
The cold–water–soluble nitrogen of alfalfa and orchardgrass was fractionated into ammonia, amide, nitrate, and amino nitrogen. Normal, potassium-deficient, sulfur-deficient, and potassium- plus sulfur-deficient forage samples were used. Determinations were also made of the water-soluble amino acids and of the insoluble nitrogen.Potassium deficiency resulted in an increase in ammonia nitrogen. Sulfur deficiency resulted in an increase in nitrate and amide nitrogen.Of the 18 amino acids determined in both species, arginine, glutamic acid, and aspartic acid were increased by sulfur deficiency but potassium deficiency had no effect on these acids. Leucine and lysine increased in potassium-deficient plants but were not affected by sulfur deficiency. Alanine was decreased by potassium deficiency. Glycine, valine, isoleucine, tyrosine, phenylalanine, tryptophan, histidine, and ornithine increased under conditions of potassium or sulfur deficiency.
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Claims 10
Claim · model-written summary
Potassium deficiency increased ammonia nitrogen in alfalfa and orchardgrass.
- Taxon
- alfalfa and orchardgrass
Medicago sativa.jpg?width=60)
Dactylis glomeratae0 - Treatment
- Potassium deficiencye1
- Outcome
- ammonia nitrogene1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“alfalfa and orchardgrass”
e1“Potassium deficiency resulted in an increase in ammonia nitrogen”
Claim · model-written summary
Sulfur deficiency increased nitrate and amide nitrogen in both forages.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- Sulfur deficiencye1
- Outcome
- nitrate and amide nitrogene1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“Sulfur deficiency resulted in an increase in nitrate and amide nitrogen”
Claim · model-written summary
Sulfur deficiency increased arginine, glutamic acid and aspartic acid in both species.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- sulfur deficiencye1
- Outcome
- arginine, glutamic acid, and aspartic acide1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“arginine, glutamic acid, and aspartic acid were increased by sulfur deficiency”
Claim · model-written summary
Potassium deficiency had no effect on arginine, glutamic acid and aspartic acid.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- potassium deficiencye1
- Outcome
- arginine, glutamic acid, and aspartic acide1
- Direction
- no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“arginine, glutamic acid, and aspartic acid were increased by sulfur deficiency but potassium deficiency had no effect on these acids”
Claim · model-written summary
Leucine and lysine increased under potassium deficiency.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- potassium-deficient plantse1
- Outcome
- Leucine and lysinee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“Leucine and lysine increased in potassium-deficient plants”
Claim · model-written summary
Sulfur deficiency did not affect leucine and lysine.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- sulfur deficiencye1
- Outcome
- Leucine and lysinee1
- Direction
- not affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“Leucine and lysine increased in potassium-deficient plants but were not affected by sulfur deficiency”
Claim · model-written summary
Potassium deficiency decreased alanine.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- potassium deficiencye1
- Outcome
- Alaninee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“Alanine was decreased by potassium deficiency”
Claim · model-written summary
Potassium or sulfur deficiency increased glycine, valine and isoleucine.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- potassium or sulfur deficiencye1
- Outcome
- Glycine, valine, isoleucinee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“Glycine, valine, isoleucine, tyrosine, phenylalanine, tryptophan, histidine, and ornithine increased under conditions of potassium or sulfur deficiency”
Claim · model-written summary
Potassium or sulfur deficiency increased tyrosine, phenylalanine and tryptophan.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- potassium or sulfur deficiencye1
- Outcome
- tyrosine, phenylalanine, tryptophane1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“Glycine, valine, isoleucine, tyrosine, phenylalanine, tryptophan, histidine, and ornithine increased under conditions of potassium or sulfur deficiency”
Claim · model-written summary
Potassium or sulfur deficiency increased histidine and ornithine.
- Taxon
- alfalfa and orchardgrassMedicago sativaDactylis glomeratae0
- Treatment
- potassium or sulfur deficiencye1
- Outcome
- histidine, and ornithinee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alfalfa and orchardgrass”
e1“histidine, and ornithine increased under conditions of potassium or sulfur deficiency”
The same questions in other papers
sulfur atom · molecular: metabolites · Medicago sativa (alfalfa)Positive and negative results
3 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
potassium · molecular: metabolites · Medicago sativa (alfalfa)Positive and negative results
6 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
3 papers more in this group
See all 7 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.