Abstract
Vyvyan's observation that the growth of the grafted apple-tree is controlled more by the rootstock than by the scion implies that apple-tree growth is more limited by a function of the root-system than of the foliage; pruning away half the roots would be expected to reduce growth to a greater extent than pruning half the leaves. Following leaf and/or root pruning of young trees with twin root-systems, growth over two successive three-week periods in late summer was reduced only by leaf pruning; the compensatory adjustments in distribution of growth were insufficient to account for the discrepancy between observation and expectation. The compensatory processes were (1) increase in the growth-rates of the pruned parts relative to the total growth (this was most marked for the roots), (2) increase in the rate of function of the pruned part, as estimated indirectly as plant increment per g functioning part (this rate increased most for pruned leaves). It was concluded that neither leaf nor root was continuously limiting growth, and that both usually operated below their maximum efficiency.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Leaf pruning reduced growth over two late-summer periods.
- Taxon
- apple-tree
Malus domesticae1 - Treatment
- leaf pruninge0
- Outcome
- growthe0
- Direction
- reducede0
- Qualifier
- two successive three-week periods in late summere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Following leaf and/or root pruning of young trees with twin root-systems, growth over two successive three-week periods in late summer was reduced only by leaf pruning”
e1“grafted apple-tree”
Claim · model-written summary
Root pruning did not reduce growth over the two late-summer periods.
- Taxon
- apple-treeMalus domesticae1
- Treatment
- root pruninge0
- Outcome
- growthe0
- Direction
- only by leaf pruninge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Following leaf and/or root pruning of young trees with twin root-systems, growth over two successive three-week periods in late summer was reduced only by leaf pruning”
e1“grafted apple-tree”
Claim · model-written summary
Compensatory growth redistribution did not account for the discrepancy between expected and observed pruning effects.
- Taxon
- apple-treeMalus domesticae1
- Outcome
- compensatory adjustments in distribution of growthe0
- Direction
- insufficiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“grafted apple-tree”
e0“the compensatory adjustments in distribution of growth were insufficient to account for the discrepancy between observation and expectation”
Claim · model-written summary
Pruned parts increased their growth rates relative to total growth, most markedly in roots.
- Taxon
- apple-treeMalus domesticae1
- Organ / stage
- rootse0
- Outcome
- growth-rates of the pruned parts relative to the total growthe0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“grafted apple-tree”
e0“increase in the growth-rates of the pruned parts relative to the total growth (this was most marked for the roots)”
Claim · model-written summary
The estimated function rate of pruned parts increased most for pruned leaves.
- Taxon
- apple-treeMalus domesticae1
- Organ / stage
- pruned leavese0
- Outcome
- rate of function of the pruned parte0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“grafted apple-tree”
e0“increase in the rate of function of the pruned part, as estimated indirectly as plant increment per g functioning part (this rate increased most for pruned leaves)”
Claim · model-written summary
The authors conclude that neither leaves nor roots continuously limit growth and both usually operate below maximum efficiency.
- Taxon
- apple-treeMalus domesticae1
- Organ / stage
- leaf nor roote0
- Outcome
- growthe0
- Qualifier
- below their maximum efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“grafted apple-tree”
e0“neither leaf nor root was continuously limiting growth, and that both usually operated below their maximum efficiency”
The same questions in other papers
pruning · growth · Malus domestica (apple)Positive and negative results
47 papers in the same direction as this paper · 58 in the opposite direction
- positive
- negative
- negative
102 papers more in this group
See all 106 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.