Abstract
Quercus alba, Q. rubra, Q. falcata, and Q. falcata variety pagodifolia seedlings were grown for 105 or 110 days in containers in a greenhouse in a medium with and without vegetative or basidiospore inoculum of the ectomycorrhizal fungi Pisolithus tinctorius and Scleroderma auranteum. At 15 days after planting acorns, nitrogen in the form of sodium nitrate or ammonium chloride was added to each container at the rates of 0.0 or 100 mg nitrogen per seedling. Growth of all Quercus seedlings that were not fertilized was significantly less than seedlings fertilized with nitrate or ammonium nitrogen (100 mg N). Ectomycorrhizal development of all Quercus seedlings that were not fertilized or fertilized with sodim nitrate (100 mg N) was significantly less than seedlings fertilized with ammonium chloride (100 mg N). Ectomycorrhizal development of oak species varied with different mycorrhizal inocula.
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Claims 5
Claim · model-written summary
Unfertilized Quercus seedlings grew significantly less than nitrate-fertilized seedlings.
QuercusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of all Quercus seedlings that were not fertilized was significantly less than seedlings fertilized with nitrate or ammonium nitrogen (100 mg N)”
Claim · model-written summary
Unfertilized Quercus seedlings grew significantly less than ammonium-fertilized seedlings.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of all Quercus seedlings that were not fertilized was significantly less than seedlings fertilized with nitrate or ammonium nitrogen (100 mg N)”
Claim · model-written summary
Unfertilized Quercus seedlings had significantly less ectomycorrhizal development than ammonium chloride-fertilized seedlings.
- Treatment
- ammonium chloride (100 mg N)e0
- Outcome
- Ectomycorrhizal developmente0
- Direction
- lesse0
- Comparator
- not fertilizede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ectomycorrhizal development of all Quercus seedlings that were not fertilized or fertilized with sodim nitrate (100 mg N) was significantly less than seedlings fertilized with ammonium chloride (100 mg N)”
Claim · model-written summary
Sodium nitrate-fertilized Quercus seedlings had significantly less ectomycorrhizal development than ammonium chloride-fertilized seedlings.
- Treatment
- ammonium chloride (100 mg N)e0
- Outcome
- Ectomycorrhizal developmente0
- Direction
- lesse0
- Comparator
- sodim nitrate (100 mg N)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ectomycorrhizal development of all Quercus seedlings that were not fertilized or fertilized with sodim nitrate (100 mg N) was significantly less than seedlings fertilized with ammonium chloride (100 mg N)”
Claim · model-written summary
Ectomycorrhizal development of oak species varied across mycorrhizal inocula.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ectomycorrhizal development of oak species varied with different mycorrhizal inocula”
The same questions in other papers
nitrogen · growth · QuercusPositive and negative results
2 in the opposite direction
- no effect
- no effect
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.