Paper · 1987 · HortScience

Effect of Root Pruning at Different Growth Stages on Growth and Fruiting of Apple Trees

James R. Schupp; David C. Ferree

12
claims
24
verbatim quotes
34
citations
3
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Three- and 4-year-old ‘MeIrose’/M.7A apple trees were root-pruned on two sides, 50 cm from the trunk, at a depth of 35–40 cm at one of the following growth stages: dormant, full bloom, June drop, and preharvest. Root pruning at dormant or full bloom growth stages reduced trunk cross-sectional area increase and shoot length, reduced average leaf size and fruit size, and increased yield efficiency. Dormant root pruning increased the level of Ca in the fruit flesh. Root pruning at June drop and preharvest had no influence on shoot growth, but increased preharvest fruit drop. Root pruning at full bloom or later increased fruit soluble solids. Considerable root regeneration in close proximity to the cut was evident in November on trees root pruned at the dormant and full-bloom stages. Root regeneration was less on roots pruned at June drop and minimal in preharvest-treated trees. Leaf mineral nutrient levels were not influenced by root pruning treatment. Vegetative growth and fruit size were reduced less by root pruning in the 3-year-old trees than in the 4-year-old trees.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 12

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Root pruning at dormant or full bloom reduced trunk cross-sectional area increase and shoot length in apple trees.

Taxon
Apple TreesMalus domesticat0
Treatment
Root pruning at dormant or full bloom growth stagese1
Outcome
trunk cross-sectional area increase and shoot lengthe1
Direction
reducede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Root pruning at dormant or full bloom growth stages reduced trunk cross-sectional area increase and shoot length, reduced average leaf size and fruit size, and increased yield efficiency”

✓ located verbatim in the source · abstract, characters 221–407 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Root pruning at dormant or full bloom reduced average leaf size and fruit size in apple trees.

Taxon
Apple TreesMalus domesticat0
Treatment
Root pruning at dormant or full bloom growth stagese1
Outcome
average leaf size and fruit sizee1
Direction
reducede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Root pruning at dormant or full bloom growth stages reduced trunk cross-sectional area increase and shoot length, reduced average leaf size and fruit size, and increased yield efficiency”

✓ located verbatim in the source · abstract, characters 221–407 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Root pruning at dormant or full bloom increased yield efficiency in apple trees.

Taxon
Apple TreesMalus domesticat0
Treatment
Root pruning at dormant or full bloom growth stagese1
Outcome
yield efficiencye1
Direction
increasede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Root pruning at dormant or full bloom growth stages reduced trunk cross-sectional area increase and shoot length, reduced average leaf size and fruit size, and increased yield efficiency”

✓ located verbatim in the source · abstract, characters 221–407 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Dormant root pruning increased the level of calcium in apple fruit flesh.

Taxon
Apple TreesMalus domesticat0
Organ / stage
fruit fleshe1
Treatment
Dormant root pruninge1
Outcome
the level of Cae1
Direction
increasede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Dormant root pruning increased the level of Ca in the fruit flesh”

✓ located verbatim in the source · abstract, characters 409–474 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Root pruning at June drop and preharvest had no influence on shoot growth of apple trees.

Taxon
Apple TreesMalus domesticat0
Treatment
Root pruning at June drop and preharveste1
Outcome
shoot growthe1
Direction
had no influencee1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Root pruning at June drop and preharvest had no influence on shoot growth, but increased preharvest fruit drop”

✓ located verbatim in the source · abstract, characters 476–586 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Root pruning at June drop and preharvest increased preharvest fruit drop in apple trees.

Taxon
Apple TreesMalus domesticat0
Treatment
Root pruning at June drop and preharveste1
Outcome
preharvest fruit drope1
Direction
increasede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Root pruning at June drop and preharvest had no influence on shoot growth, but increased preharvest fruit drop”

✓ located verbatim in the source · abstract, characters 476–586 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Root pruning at full bloom or later increased fruit soluble solids in apple trees.

Taxon
Apple TreesMalus domesticat0
Treatment
Root pruning at full bloom or latere1
Outcome
fruit soluble solidse1
Direction
increasede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Root pruning at full bloom or later increased fruit soluble solids”

✓ located verbatim in the source · abstract, characters 588–654 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Considerable root regeneration near the cut was evident in November on apple trees root pruned at the dormant and full-bloom stages.

Taxon
Apple TreesMalus domesticat0
Treatment
root pruned at the dormant and full-bloom stagese1
Outcome
root regeneration in close proximity to the cute1

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Considerable root regeneration in close proximity to the cut was evident in November on trees root pruned at the dormant and full-bloom stages”

✓ located verbatim in the source · abstract, characters 656–798 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Root regeneration was less on apple roots pruned at June drop.

Taxon
Apple TreesMalus domesticat0
Treatment
roots pruned at June drope1
Outcome
Root regeneratione1
Direction
lesse1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Root regeneration was less on roots pruned at June drop and minimal in preharvest-treated trees”

✓ located verbatim in the source · abstract, characters 800–895 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Root regeneration was minimal in apple trees treated with preharvest root pruning.

Taxon
Apple TreesMalus domesticat0
Treatment
preharvest-treated treese1
Outcome
Root regeneratione1
Direction
minimale1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Root regeneration was less on roots pruned at June drop and minimal in preharvest-treated trees”

✓ located verbatim in the source · abstract, characters 800–895 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Root pruning treatment did not influence leaf mineral nutrient levels of apple trees.

Taxon
Apple TreesMalus domesticat0
Treatment
root pruning treatmente1
Outcome
Leaf mineral nutrient levelse1
Direction
not influencede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Leaf mineral nutrient levels were not influenced by root pruning treatment”

✓ located verbatim in the source · abstract, characters 897–971 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Root pruning reduced vegetative growth and fruit size less in 3-year-old apple trees than in 4-year-old trees.

Taxon
Apple TreesMalus domesticat0
Treatment
root pruninge1
Outcome
Vegetative growth and fruit sizee1
Direction
reduced lesse1
Qualifier
3-year-old treese1
Comparator
4-year-old treese1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

t0

“Apple Trees”

✓ located verbatim in the source · title, characters 76–87 · show in text ↑
e1

“Vegetative growth and fruit size were reduced less by root pruning in the 3-year-old trees than in the 4-year-old trees”

✓ located verbatim in the source · abstract, characters 973–1092 · show in text ↑

stage · yield · Malus domestica (apple)Positive and negative results

7 papers: 5 positive, 2 negative or no effect

4 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. no effect
  3. positive

3 papers more in this group

See all 7 papers →

pruning · nutrient: content · Malus domestica (apple)Positive and negative results

13 papers: 7 positive, 6 negative or no effect

5 papers in the same direction as this paper · 7 in the opposite direction

  1. positive
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

pruning · growth · Malus domestica (apple)Positive and negative results

106 papers: 58 positive, 48 negative or no effect

47 papers in the same direction as this paper · 58 in the opposite direction

  1. positive
  2. negative
  3. negative

102 papers more in this group

See all 106 papers →

pruning · yield · Malus domestica (apple)Positive and negative results

147 papers: 100 positive, 47 negative or no effect

99 papers in the same direction as this paper · 47 in the opposite direction

  1. negative
  2. negative
  3. no effect

143 papers more in this group

See all 147 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.