Paper · 2000 · Journal of Plant Nutrition

Effect of calcium spray materials, rate, time of spray application, and rootstocks on fruit quality of ‘red’ and ‘golden delicious’ apples

J. Thomas Raese; Stephen R. Drake

7
claims
10
verbatim quotes
40
citations
3
research areas
—
Not open access

Abstract

Abstract Calcium (Ca) spray materials improved fruit quality as measured by control of bitter pit, fruit finish (appearance), increased red skin color, reduced incidence of scald, increased juiciness, texture, and fruit firmness of ‘Red’ and ‘Golden Delicious’ apples (Malus domestica, Borkh.). Concentrations of Ca in leaf and fruit tissues were increased by Ca sprays, especially calcium chloride (CaCl2)‐containing spray materials. Improved fruit firmness and control of bitter pit occurred for either standard recommended or high rates of Ca spray materials. At high rates of application, the only significant difference that occurred between early and late applications of Ca spray materials was that less leaf injury occurred with the early applications. Unsprayed ‘Red Delicious’ fruit from M.7 rootstocks had greater fruit peel Ca concentrations and a lower incidence of bitter pit but smaller fruit than fruit from trees on M.26 rootstocks. The above information is strong evidence that Ca sprays are important for the improvement of apple quality.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium sprays improved apple fruit quality across bitter pit, finish, color, scald, juiciness, texture and firmness.

Material
‘Red’ and ‘Golden Delicious’e0
Treatment
Calcium (Ca) spray materialse0
Outcome
fruit qualitye0
Direction
improvede0

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

“Calcium (Ca) spray materials improved fruit quality as measured by control of bitter pit, fruit finish (appearance), increased red skin color, reduced incidence of scald, increased juiciness, texture, and fruit firmness of ‘Red’ and ‘Golden Delicious’ apples (Malus domestica, Borkh.)”

✓ located verbatim in the source · abstract, characters 9–293 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium sprays increased calcium concentration in apple leaf and fruit tissues, especially calcium chloride sprays.

Treatment
Ca sprayse0
Outcome
Concentrations of Ca in leaf and fruit tissuese0
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

“Concentrations of Ca in leaf and fruit tissues were increased by Ca sprays, especially calcium chloride (CaCl2)‐containing spray materials”

✓ located verbatim in the source · abstract, characters 295–433 · show in text ↑
e1

“apples (Malus domestica, Borkh.)”

✓ located verbatim in the source · abstract, characters 261–293 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Standard and high calcium spray rates both improved firmness and controlled bitter pit.

Treatment
standard recommended or high rates of Ca spray materialse0
Outcome
fruit firmness and control of bitter pite0
Direction
Improvede0

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

“Improved fruit firmness and control of bitter pit occurred for either standard recommended or high rates of Ca spray materials”

✓ located verbatim in the source · abstract, characters 435–561 · show in text ↑
e1

“apples (Malus domestica, Borkh.)”

✓ located verbatim in the source · abstract, characters 261–293 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At high calcium rates, early applications caused less leaf injury than late applications.

Treatment
earlye0
Outcome
leaf injurye0
Direction
lesse0
Comparator
late applications of Ca spray materialse0

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

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

Verbatim

e0

“At high rates of application, the only significant difference that occurred between early and late applications of Ca spray materials was that less leaf injury occurred with the early applications”

✓ located verbatim in the source · abstract, characters 563–759 · show in text ↑
e1

“apples (Malus domestica, Borkh.)”

✓ located verbatim in the source · abstract, characters 261–293 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Unsprayed Red Delicious on M.7 had greater peel calcium concentration than on M.26.

Taxon
‘Red Delicious’e0
Material
M.7 rootstockse0
Outcome
fruit peel Ca concentrationse0
Direction
greatere0
Comparator
M.26 rootstockse0

Verbatim

e0

“Unsprayed ‘Red Delicious’ fruit from M.7 rootstocks had greater fruit peel Ca concentrations and a lower incidence of bitter pit but smaller fruit than fruit from trees on M.26 rootstocks”

✓ located verbatim in the source · abstract, characters 761–948 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Unsprayed Red Delicious on M.7 had lower bitter pit incidence than on M.26.

Taxon
‘Red Delicious’e0
Material
M.7 rootstockse0
Outcome
incidence of bitter pite0
Direction
lowere0
Comparator
M.26 rootstockse0

Verbatim

e0

“Unsprayed ‘Red Delicious’ fruit from M.7 rootstocks had greater fruit peel Ca concentrations and a lower incidence of bitter pit but smaller fruit than fruit from trees on M.26 rootstocks”

✓ located verbatim in the source · abstract, characters 761–948 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Unsprayed Red Delicious on M.7 had smaller fruit than on M.26.

Taxon
‘Red Delicious’e0
Material
M.7 rootstockse0
Outcome
fruite0
Direction
smallere0
Comparator
M.26 rootstockse0

Verbatim

e0

“Unsprayed ‘Red Delicious’ fruit from M.7 rootstocks had greater fruit peel Ca concentrations and a lower incidence of bitter pit but smaller fruit than fruit from trees on M.26 rootstocks”

✓ located verbatim in the source · abstract, characters 761–948 · show in text ↑

calcium atom · nutrient: content · Malus domestica (apple)Results differ

51 papers: 37 positive, 14 negative or no effect

36 papers in the same direction as this paper · 14 in the opposite direction

  1. positive
  2. no effect
  3. no effect

47 papers more in this group

See all 51 papers →

calcium atom · control · Malus domestica (apple)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 reporting no difference from an alternative

  1. no effect
See all 2 papers →

calcium atom · quality: grain · Malus domestica (apple)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

application · quality: grain · Malus domestica (apple)Positive and negative results

12 papers: 8 positive, 4 negative or no effect

7 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

8 papers more in this group

See all 12 papers →

application · control · Malus domestica (apple)Positive and negative results

29 papers: 25 positive, 4 negative or no effect

24 papers in the same direction as this paper · 2 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

25 papers more in this group

See all 29 papers →

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

116 papers: 100 positive, 16 negative or no effect

99 papers in the same direction as this paper · 16 in the opposite direction

  1. no effect
  2. positive
  3. no effect

112 papers more in this group

See all 116 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.