Paper · 1976 · New Zealand Journal of Agricultural Research

Irrigation of apple trees in Nelson

E.W. Hewett

7
claims
11
verbatim quotes
5
citations
2
research areas
✓
Open access

Abstract

ABstract Irrigation of ‘Golden Delicious’ apple trees on the Moutere Hills Nelson, has resulted in a 5‐year cumulative yield increase of 16% and 9% for treatments applied at 80% or 20% available soil moisture respectively. Significant yield increases were obtained in only 2 of the 5 years, and fruit size was increased in 3 of the 5 years. Trees tended towards a biennial bearing production pattern which was accentuated by irrigation. Trunk and shoot growth were also increased by irrigation. These preliminary results suggest that on these soil types, the critical soil moisture deficit for mature Golden Delicious apple trees is tcached when the soil dries to approximately 30% available moisture.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation at 80% available soil moisture increased five-year cumulative yield by 16%.

Taxon
apple treesMalus domesticae0
Material
‘Golden Delicious’e0
Treatment
80%e0
Outcome
5‐year cumulative yielde0
Direction
increasee0
Value
16%e0
Setting
Moutere Hills Nelsone0

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

“Irrigation of ‘Golden Delicious’ apple trees on the Moutere Hills Nelson, has resulted in a 5‐year cumulative yield increase of 16% and 9% for treatments applied at 80% or 20% available soil moisture respectively”

✓ located verbatim in the source · abstract, characters 9–221 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation at 20% available soil moisture increased five-year cumulative yield by 9%.

Taxon
apple treesMalus domesticae0
Material
‘Golden Delicious’e0
Treatment
20% available soil moisturee0
Outcome
5‐year cumulative yielde0
Direction
increasee0
Value
9%e0
Setting
Moutere Hills Nelsone0

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

“Irrigation of ‘Golden Delicious’ apple trees on the Moutere Hills Nelson, has resulted in a 5‐year cumulative yield increase of 16% and 9% for treatments applied at 80% or 20% available soil moisture respectively”

✓ located verbatim in the source · abstract, characters 9–221 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Yield increases were significant in two of five years.

Taxon
apple treesMalus domesticat0
Outcome
yield increasese0
Direction
increasese0
Value
2 of the 5 yearse0

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

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

Verbatim

e0

“Significant yield increases were obtained in only 2 of the 5 years”

✓ located verbatim in the source · abstract, characters 223–289 · show in text ↑
t0

“apple trees”

✓ located verbatim in the source · title, characters 14–25 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation increased apple fruit size in three of five years.

Taxon
apple treesMalus domesticat0
Treatment
Irrigationt0
Outcome
fruit sizee0
Direction
increasede0
Value
3 of the 5 yearse0

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 size was increased in 3 of the 5 years”

✓ located verbatim in the source · abstract, characters 295–339 · show in text ↑
t0

“Irrigation of apple trees”

✓ located verbatim in the source · title, characters 0–25 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Irrigation accentuated a tendency toward biennial bearing.

Taxon
apple treesMalus domesticat0
Treatment
irrigatione0
Outcome
biennial bearing production patterne0
Direction
accentuatede0

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

“Trees tended towards a biennial bearing production pattern which was accentuated by irrigation”

✓ located verbatim in the source · abstract, characters 341–435 · show in text ↑
t0

“apple trees”

✓ located verbatim in the source · title, characters 14–25 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation increased trunk and shoot growth.

Taxon
apple treesMalus domesticat0
Treatment
irrigatione0
Outcome
Trunk and shoot growthe0
Direction
increasede0

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

“Trunk and shoot growth were also increased by irrigation”

✓ located verbatim in the source · abstract, characters 437–493 · show in text ↑
t0

“apple trees”

✓ located verbatim in the source · title, characters 14–25 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors suggest a critical moisture deficit near 30% available moisture for mature Golden Delicious trees on these soils.

Taxon
apple treesMalus domesticae0
Material
Golden Deliciouse0
Outcome
critical soil moisture deficite0
Value
approximately 30% available moisturee0
Qualifier
on these soil typese0

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 preliminary results suggest that on these soil types, the critical soil moisture deficit for mature Golden Delicious apple trees is tcached when the soil dries to approximately 30% available moisture”

✓ located verbatim in the source · abstract, characters 495–700 · show in text ↑

irrigation · growth · Malus domestica (apple)Results differ

67 papers: 52 positive, 15 negative or no effect

51 papers in the same direction as this paper · 14 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

63 papers more in this group

See all 67 papers →

soil water · yield · Malus domestica (apple)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

3 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

1 paper more in this group

See all 5 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. negative
  2. no effect
  3. negative

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.