Abstract
The affect of pre-plant rotted sawdust amendment (with and without), mulch (with and without), and nitrogen level (four levels, ranging from 0 to 160 g/plant) were evaluated for their affects on highbush blueberry root and mycorrhizal infection intensity in a field study that was instigated in 1992 at the Russell E. Larson Agricultural Research Center in Rock Springs, Pa. Over the years, mycorrhizal infection intensity was affected interactively by these treatments, however in general, it was negatively correlated with nitrogen level, mulch, and pre-plant amendment. Plants were excavated in Oct. 1998, and it was found that fine feeder roots constituted a much higher percentage of total root mass in unmulched plants, as well in high nitrogen plants, however there was an interaction between nitrogen level and mulching, such that non-mulched high N plants had a higher proportion of feeder roots. Total root mass was unaffected by mulch and pre-plant amendment; however it was increased by nitrogen. Root systems were also sampled for mycorrhizal infection intensity from different locations on the root system and are currently being analyzed.
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Claims 9
Claim · model-written summary
Mycorrhizal infection intensity was negatively correlated with nitrogen level.
- Taxon
- highbush blueberry
Vaccinium corymbosumt0 - Treatment
- nitrogen levele0
- Outcome
- mycorrhizal infection intensitye0
- Direction
- negatively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal infection intensity was affected interactively by these treatments, however in general, it was negatively correlated with nitrogen level, mulch, and pre-plant amendment”
t0“highbush blueberry”
Claim · model-written summary
Mycorrhizal infection intensity was negatively correlated with mulch.
- Taxon
- highbush blueberryVaccinium corymbosumt0
- Treatment
- mulche0
- Outcome
- mycorrhizal infection intensitye0
- Direction
- negatively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal infection intensity was affected interactively by these treatments, however in general, it was negatively correlated with nitrogen level, mulch, and pre-plant amendment”
t0“highbush blueberry”
Claim · model-written summary
Mycorrhizal infection intensity was negatively correlated with pre-plant amendment.
- Taxon
- highbush blueberryVaccinium corymbosumt0
- Treatment
- pre-plant amendmente0
- Outcome
- mycorrhizal infection intensitye0
- Direction
- negatively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal infection intensity was affected interactively by these treatments, however in general, it was negatively correlated with nitrogen level, mulch, and pre-plant amendment”
t0“highbush blueberry”
Claim · model-written summary
Fine feeder roots formed a higher percentage of total root mass in unmulched plants.
- Taxon
- highbush blueberryVaccinium corymbosumt0
- Organ / stage
- fine feeder rootse0
- Treatment
- unmulchede0
- Outcome
- percentage of total root masse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fine feeder roots constituted a much higher percentage of total root mass in unmulched plants”
t0“highbush blueberry”
Claim · model-written summary
Fine feeder roots formed a higher percentage of total root mass in high nitrogen plants.
- Taxon
- highbush blueberryVaccinium corymbosumt0
- Organ / stage
- fine feeder rootse0
- Treatment
- high nitrogene0
- Outcome
- percentage of total root masse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fine feeder roots constituted a much higher percentage of total root mass in unmulched plants, as well in high nitrogen plants”
t0“highbush blueberry”
Claim · model-written summary
Non-mulched high-N plants had a higher feeder-root proportion.
- Taxon
- highbush blueberryVaccinium corymbosumt0
- Treatment
- non-mulched high Ne0
- Outcome
- proportion of feeder rootse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“non-mulched high N plants had a higher proportion of feeder roots”
t0“highbush blueberry”
Claim · model-written summary
Mulch did not affect total root mass.
- Taxon
- highbush blueberryVaccinium corymbosumt0
- Treatment
- mulche0
- Outcome
- Total root masse0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total root mass was unaffected by mulch and pre-plant amendment”
t0“highbush blueberry”
Claim · model-written summary
Pre-plant amendment did not affect total root mass.
- Taxon
- highbush blueberryVaccinium corymbosumt0
- Treatment
- pre-plant amendmente0
- Outcome
- Total root masse0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total root mass was unaffected by mulch and pre-plant amendment”
t0“highbush blueberry”
Claim · model-written summary
Nitrogen increased total root mass.
- Taxon
- highbush blueberryVaccinium corymbosumt0
- Treatment
- nitrogene0
- Outcome
- root masse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total root mass was unaffected by mulch and pre-plant amendment; however it was increased by nitrogen”
t0“highbush blueberry”
The same questions in other papers
other · growth · Vaccinium corymbosum (highbush blueberry)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →mulching · growth · Vaccinium corymbosum (highbush blueberry)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
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5 papers more in this group
See all 9 papers →nitrogen · growth · Vaccinium corymbosum (highbush blueberry)Positive and negative results
3 papers in the same direction as this paper · 6 in the opposite direction
- negative
- no effect
- negative
6 papers more in this group
See all 10 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.