Abstract
One- or 2-year-old Golden Delicious apple trees on M.IX were grown either in a clay loam (in 60-1 containers) or in nutrient solution and the effects were studied of several aeration regimes. With the soil-grown trees these comprised flooding to various soil depths and for different times. With the trees grown in nutrient solution the aeration regimes compared were nutrient solution without aeration, tap water with or without aeration, and aerated nutrient solution (control). Shoot growth was depressed by high water tables, and that of trees receiving non-aerated nutrient solution or tap water (whether aerated or not) ceased after about 2 weeks. The root growth of trees receiving non-aerated nutrient solution or tap water was similarly depressed, but, by contrast, aerated tap water enhanced root growth. Details are given of treatment effects on the Ca, K, N and soluble sugar contents of the young and old leaves and of the young roots. The uptake of all mineral elements was similarly affected by lack of aeration, suggesting that the relationship between low Ca content and increased bitter pit incidence is not associated with differential absorption but rather with differential Ca distribution. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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Claims 6
Claim · model-written summary
High water tables depressed shoot growth of apple trees.
- Taxon
- apple trees
Malus domesticae0 - Material
- Golden Deliciouse0
- Treatment
- high water tablese1
- Outcome
- Shoot growthe1
- Direction
- depressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One- or 2-year-old Golden Delicious apple trees on M.IX were grown either in a clay loam (in 60-1 containers) or in nutrient solution”
e1“Shoot growth was depressed by high water tables”
Claim · model-written summary
Shoot growth of apple trees receiving non-aerated nutrient solution or tap water ceased after about 2 weeks.
- Taxon
- apple treesMalus domesticae0
- Treatment
- non-aerated nutrient solution or tap watere2
- Outcome
- Shoot growthe1
- Direction
- ceasede2
- Value
- about 2 weekse2
- Comparator
- aerated nutrient solution (control)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One- or 2-year-old Golden Delicious apple trees on M.IX were grown either in a clay loam (in 60-1 containers) or in nutrient solution”
e1“Shoot growth was depressed by high water tables”
e2“that of trees receiving non-aerated nutrient solution or tap water (whether aerated or not) ceased after about 2 weeks”
e7“aerated nutrient solution (control)”
Claim · model-written summary
Root growth of apple trees receiving non-aerated nutrient solution or tap water was depressed.
- Taxon
- apple treesMalus domesticae0
- Treatment
- non-aerated nutrient solution or tap watere3
- Outcome
- root growthe3
- Direction
- depressede3
- Comparator
- aerated nutrient solution (control)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One- or 2-year-old Golden Delicious apple trees on M.IX were grown either in a clay loam (in 60-1 containers) or in nutrient solution”
e3“The root growth of trees receiving non-aerated nutrient solution or tap water was similarly depressed”
e7“aerated nutrient solution (control)”
Claim · model-written summary
Aerated tap water enhanced root growth of apple trees.
- Taxon
- apple treesMalus domesticae0
- Treatment
- aerated tap watere4
- Outcome
- root growthe4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One- or 2-year-old Golden Delicious apple trees on M.IX were grown either in a clay loam (in 60-1 containers) or in nutrient solution”
e4“by contrast, aerated tap water enhanced root growth”
Claim · model-written summary
Lack of aeration similarly affected the uptake of all mineral elements by apple trees.
- Taxon
- apple treesMalus domesticae0
- Treatment
- lack of aeratione5
- Outcome
- uptake of all mineral elementse5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One- or 2-year-old Golden Delicious apple trees on M.IX were grown either in a clay loam (in 60-1 containers) or in nutrient solution”
e5“The uptake of all mineral elements was similarly affected by lack of aeration”
Claim · model-written summary
The link between low Ca content and bitter pit incidence reflects differential Ca distribution in apple trees, not differential absorption.
- Taxon
- apple treesMalus domesticae0
- Compound
- Cae6
- Outcome
- bitter pit incidencee6
- Direction
- increasede6
- Qualifier
- differential Ca distributione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One- or 2-year-old Golden Delicious apple trees on M.IX were grown either in a clay loam (in 60-1 containers) or in nutrient solution”
e6“the relationship between low Ca content and increased bitter pit incidence is not associated with differential absorption but rather with differential Ca distribution”
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