Paper · 1975 · Journal of Horticultural Science

Effect of Irrigation Regimes on Trunk and Fruit Growth Rates, Quality and Yield of Apple Trees

R. Assaf; I. Levin; B. Bravdo

6
claims
14
verbatim quotes
23
citations
3
research areas
—
Not open access

Abstract

SummarySix irrigation treatments were applied to an apple orchard. The treatments consisted of replenishing the soil water deficit at the 0-60 and 0-120 cm layers according to predetermined available water content. The seasonal patterns of trunk and fruit growth and of fruit drop were studied. It was found that the final volume of fruit was linearly related to the number of days to which the trees were subjected to above and below 30% available water in the 0-60 cm layer. Fruit firmness and soluble solids content were reduced by frequent irrigation. These reductions were found to be due both to a direct effect and to an indirect effect through the increase in fruit size due to frequent irrigation.

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

Associationobservedoriginal resultmeasured

Claim · model-written summary

Final apple fruit volume was linearly related to days above and below 30% available soil water.

Outcome
final volume of fruite0
Qualifier
above and below 30% available watere0
Setting
0-60 cm layere0

Not reportedDirection

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

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

Verbatim

e0

“the final volume of fruit was linearly related to the number of days to which the trees were subjected to above and below 30% available water in the 0-60 cm layer”

✓ located verbatim in the source · abstract, characters 313–475 · show in text ↑
t0

“Apple Trees”

✓ located verbatim in the source · title, characters 83–94 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Frequent irrigation reduced apple fruit firmness.

Treatment
frequent irrigatione0
Outcome
Fruit firmnesse0
Direction
reducede0

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

e0

“Fruit firmness and soluble solids content were reduced by frequent irrigation.”

✓ located verbatim in the source · abstract, characters 477–555 · show in text ↑
t0

“Apple Trees”

✓ located verbatim in the source · title, characters 83–94 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Frequent irrigation reduced apple fruit soluble solids content.

Treatment
frequent irrigatione0
Outcome
soluble solids contente0
Direction
reducede0

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

e0

“Fruit firmness and soluble solids content were reduced by frequent irrigation.”

✓ located verbatim in the source · abstract, characters 477–555 · show in text ↑
t0

“Apple Trees”

✓ located verbatim in the source · title, characters 83–94 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Frequent irrigation increased apple fruit size.

Treatment
frequent irrigatione0
Outcome
fruit sizee0
Direction
increasee0

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

e0

“increase in fruit size due to frequent irrigation”

✓ located verbatim in the source · abstract, characters 656–705 · show in text ↑
t0

“Apple Trees”

✓ located verbatim in the source · title, characters 83–94 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The reductions in apple firmness and soluble solids were attributed partly to a direct irrigation effect.

Treatment
frequent irrigatione0
Outcome
Fruit firmness and soluble solids contente1
Qualifier
a direct effecte0

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

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

Verbatim

e0

“These reductions were found to be due both to a direct effect and to an indirect effect through the increase in fruit size due to frequent irrigation.”

✓ located verbatim in the source · abstract, characters 556–706 · show in text ↑
e1

“Fruit firmness and soluble solids content were reduced by frequent irrigation.”

✓ located verbatim in the source · abstract, characters 477–555 · show in text ↑
t0

“Apple Trees”

✓ located verbatim in the source · title, characters 83–94 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The reductions in apple firmness and soluble solids were attributed partly to increased fruit size under frequent irrigation.

Treatment
frequent irrigatione0
Outcome
Fruit firmness and soluble solids contente1
Qualifier
an indirect effect through the increase in fruit sizee0

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

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

Verbatim

e0

“These reductions were found to be due both to a direct effect and to an indirect effect through the increase in fruit size due to frequent irrigation.”

✓ located verbatim in the source · abstract, characters 556–706 · show in text ↑
e1

“Fruit firmness and soluble solids content were reduced by frequent irrigation.”

✓ located verbatim in the source · abstract, characters 477–555 · show in text ↑
t0

“Apple Trees”

✓ located verbatim in the source · title, characters 83–94 · show in text ↑

irrigation · quality: sugar starch · Malus domestica (apple)Results differ

18 papers: 10 positive, 8 negative or no effect

7 papers in the same direction as this paper · 10 in the opposite direction

  1. positive
  2. positive
  3. positive

14 papers more in this group

See all 18 papers →

irrigation · quality: postharvest · Malus domestica (apple)Positive and negative results

26 papers: 17 positive, 9 negative or no effect

8 papers in the same direction as this paper · 17 in the opposite direction

  1. positive
  2. positive
  3. positive

22 papers more in this group

See all 26 papers →

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

84 papers: 63 positive, 21 negative or no effect

62 papers in the same direction as this paper · 17 in the opposite direction · 4 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

80 papers more in this group

See all 84 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.