Abstract
The ability of mycorrhizal and nonmycorrhizal `Elliott' highbush blueberry ( Vaccinium corymbosum L.) plants to acquire soil N under different preplant organic soil amendment regimes (forest litter, rotted sawdust, or no amendment) was investigated in a field experiment using 15 N labeled (NH 4 ) 2 SO 4 . Plants inoculated with an ericoid mycorrhizal isolate, Oidiodendron maius Dalpé (UAMH 9263), had lower leaf 15 N enrichment and higher leaf N contents than noninoculated plants but similar leaf N concentrations, indicating mycorrhizal plants absorbed more nonlabeled soil N than nonmycorrhizal plants. Mycorrhizal plants produced more plant dry weight (DW) and larger canopy volumes. The effect of preplant organic amendments on the growth of highbush blueberry plants was clearly demonstrated. Plants grown in soil amended with forest litter produced higher DW than those in either the rotted sawdust amendment or no amendment. Plants grown in soils amended preplant with sawdust, the current commercial recommendation, were the smallest. Differences in the carbon to nitrogen ratio were likely responsible for growth differences among plants treated with different soil amendments.
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Claims 8
Claim · model-written summary
Mycorrhizal blueberry had lower leaf 15 N enrichment than noninoculated plants.
- Taxon
- highbush blueberry
Vaccinium corymbosume1 - Treatment
- inoculated with an ericoid mycorrhizal isolatee0
- Interactor
- Oidiodendron maius Dalpé (UAMH 9263)Oidiodendron maiuse0symbiont
- Outcome
- leaf 15 N enrichmente0
- Direction
- lowere0
- Comparator
- noninoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants inoculated with an ericoid mycorrhizal isolate, Oidiodendron maius Dalpé (UAMH 9263), had lower leaf 15 N enrichment and higher leaf N contents than noninoculated plants”
e1“highbush blueberry ( Vaccinium corymbosum L.)”
Claim · model-written summary
Mycorrhizal blueberry had higher leaf nitrogen contents than noninoculated plants.
- Taxon
- highbush blueberryVaccinium corymbosume1
- Treatment
- inoculated with an ericoid mycorrhizal isolatee0
- Interactor
- Oidiodendron maius Dalpé (UAMH 9263)Oidiodendron maiuse0symbiont
- Outcome
- leaf N contentse0
- Direction
- highere0
- Comparator
- noninoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants inoculated with an ericoid mycorrhizal isolate, Oidiodendron maius Dalpé (UAMH 9263), had lower leaf 15 N enrichment and higher leaf N contents than noninoculated plants”
e1“highbush blueberry ( Vaccinium corymbosum L.)”
Claim · model-written summary
Mycorrhizal and noninoculated blueberry had similar leaf nitrogen concentrations.
- Taxon
- highbush blueberryVaccinium corymbosume2
- Treatment
- inoculated with an ericoid mycorrhizal isolatee1
- Interactor
- Oidiodendron maius Dalpé (UAMH 9263)Oidiodendron maiuse1symbiont
- Outcome
- leaf N concentrationse0
- Direction
- similare0
- Comparator
- noninoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had lower leaf 15 N enrichment and higher leaf N contents than noninoculated plants but similar leaf N concentrations”
e1“Plants inoculated with an ericoid mycorrhizal isolate, Oidiodendron maius Dalpé (UAMH 9263)”
e2“highbush blueberry ( Vaccinium corymbosum L.)”
Claim · model-written summary
Authors infer mycorrhizal blueberry absorbed more unlabeled soil nitrogen.
- Taxon
- highbush blueberryVaccinium corymbosume1
- Interactor
- Oidiodendron maius Dalpé (UAMH 9263)Oidiodendron maiuse2symbiont
- Outcome
- absorbed more nonlabeled soil Ne0
- Qualifier
- mycorrhizal plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indicating mycorrhizal plants absorbed more nonlabeled soil N than nonmycorrhizal plants”
e1“highbush blueberry ( Vaccinium corymbosum L.)”
e2“Oidiodendron maius Dalpé (UAMH 9263)”
Claim · model-written summary
Mycorrhizal blueberry produced more dry weight and larger canopies.
- Taxon
- highbush blueberryVaccinium corymbosume1
- Treatment
- Mycorrhizale0
- Interactor
- Oidiodendron maius Dalpé (UAMH 9263)Oidiodendron maiuse2symbiont
- Outcome
- plant dry weight (DW) and larger canopy volumese0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycorrhizal plants produced more plant dry weight (DW) and larger canopy volumes”
e1“highbush blueberry ( Vaccinium corymbosum L.)”
e2“Oidiodendron maius Dalpé (UAMH 9263)”
Claim · model-written summary
Forest-litter amendment produced higher blueberry dry weight than sawdust or no amendment.
- Taxon
- highbush blueberryVaccinium corymbosume1
- Treatment
- forest littere0
- Outcome
- DWe0
- Direction
- highere0
- Comparator
- rotted sawdust amendment or no amendmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown in soil amended with forest litter produced higher DW than those in either the rotted sawdust amendment or no amendment”
e1“highbush blueberry plants”
Claim · model-written summary
Blueberry plants in sawdust-amended soil were smallest.
- Taxon
- highbush blueberryVaccinium corymbosume1
- Treatment
- sawduste0
- Outcome
- smalleste0
- Direction
- smalleste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown in soils amended preplant with sawdust, the current commercial recommendation, were the smallest”
e1“highbush blueberry plants”
Claim · model-written summary
Authors attribute amendment-related blueberry growth differences to carbon-to-nitrogen ratios.
- Taxon
- highbush blueberryVaccinium corymbosume1
- Treatment
- different soil amendmentse0
- Outcome
- growth differencese0
- Qualifier
- Differences in the carbon to nitrogen ratioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in the carbon to nitrogen ratio were likely responsible for growth differences among plants treated with different soil amendments”
e1“highbush blueberry plants”
The same questions in other papers
inoculation · Oidiodendron maius · Vaccinium corymbosum (highbush blueberry)Positive and negative results
1 in the opposite direction
- no effect
mycorrhiza · Oidiodendron maius · Vaccinium corymbosum (highbush blueberry)Positive and negative results
1 in the opposite direction
- 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.