Paper · 1997 · Journal of Tree Fruit Production

Effects of Aminoethoxyvinylglycine (AVG) on Preharvest Fruit Drop and Maturity of ‘Delicious’ Apples

Ross E. Byers

15
claims
30
verbatim quotes
43
citations
3
research areas
✓
Open access

Abstract

Aminoethoxyvinylglycine (AVG) applied 2 to 6 weeks before the optimum harvest date dramatically reduced preharvest drop of 'Delicious' apples (Malus domestica Borkh).The loss of fruit firmness, starch, and water core was reduced by AVG sprays particularly when harvest was delayed beyond the optimum harvest date.Color development and soluble solids concentration (SSC) generally was unaffected.Equivalent dilute airblast concentration (EDAC) of 44 mg L 1 AVG was no more effective than a standard rate of napthalene acetic acid (NAA), but a rate of 44 mg L 1 AVG EDAC + a silicone surfactant ABG 7011 or 88 mg L 1 AVG EDAC was more effective than NAA.When fruit were left on the tree for periods of 3 to 5 weeks after the optimum harvest date, NAA enhanced softening and loss of starch and increased water core of 'Delicious'.Soluble solids and red color generally were unchanged by NAA.Ethephon sprays hastened the rate of fruit drop.When NAA was tank mixed with ethephon, it delayed fruit drop caused by ethephon, but AVG did not.The use of superior oil or Regulaid surfactant did not affect NAA or AVG responses; however, the silicone surfactant ABG 7011 promoted the effectiveness of AVG.Tank mixing with pesticides (Guthion + Lannate + Captan) did not affect the responses of AVG or NAA on fruit drop.Chemicals used: Aminoethoxyvinylglycine hydrochloride (N-(phenylmethyl)-1H-purin-6-amine, (AVG));

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Claims 15

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AVG applied 2 to 6 weeks before optimal harvest greatly reduced preharvest drop of Delicious apples.

Taxon
Malus domestica BorkhMalus domesticae0
Material
'Delicious'e0
Treatment
Aminoethoxyvinylglycine (AVG)e0
Outcome
preharvest drope0
Direction
reducede0
Qualifier
2 to 6 weeks before the optimum harvest datee0

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

“Aminoethoxyvinylglycine (AVG) applied 2 to 6 weeks before the optimum harvest date dramatically reduced preharvest drop of 'Delicious' apples (Malus domestica Borkh).”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AVG sprays reduced loss of fruit firmness, starch and water core, especially with delayed harvest.

Material
‘Delicious’t0
Treatment
AVG sprayse0
Outcome
loss of fruit firmness, starch, and water coree0
Direction
reducede0
Qualifier
particularly when harvest was delayed beyond the optimum harvest datee0

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

“The loss of fruit firmness, starch, and water core was reduced by AVG sprays particularly when harvest was delayed beyond the optimum harvest date.”

✓ located verbatim in the source · abstract, characters 166–313 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

AVG generally did not affect color development or soluble solids concentration.

Treatment
AVGe1
Outcome
Color development and soluble solids concentration (SSC)e0
Direction
unaffectede0

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

“Color development and soluble solids concentration (SSC) generally was unaffected.”

✓ located verbatim in the source · abstract, characters 313–395 · show in text ↑
e1

“The loss of fruit firmness, starch, and water core was reduced by AVG sprays”

✓ located verbatim in the source · abstract, characters 166–242 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

AVG at 44 mg L 1 EDAC was no more effective than standard NAA.

Treatment
44 mg L 1 AVGe0
Outcome
no more effectivee0
Direction
no more effectivee0
Comparator
a standard rate of napthalene acetic acid (NAA)e0

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

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

Verbatim

e0

“Equivalent dilute airblast concentration (EDAC) of 44 mg L 1 AVG was no more effective than a standard rate of napthalene acetic acid (NAA)”

✓ located verbatim in the source · abstract, characters 395–534 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AVG at 44 mg L 1 EDAC with ABG 7011 was more effective than NAA.

Treatment
44 mg L 1 AVG EDAC + a silicone surfactant ABG 7011e0
Outcome
more effectivee0
Direction
more effectivee0
Comparator
NAAe0

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

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

Verbatim

e0

“44 mg L 1 AVG EDAC + a silicone surfactant ABG 7011 or 88 mg L 1 AVG EDAC was more effective than NAA”

✓ located verbatim in the source · abstract, characters 550–651 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AVG at 88 mg L 1 EDAC was more effective than NAA.

Treatment
88 mg L 1 AVG EDACe0
Outcome
more effectivee0
Direction
more effectivee0
Comparator
NAAe0

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

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

Verbatim

e0

“88 mg L 1 AVG EDAC was more effective than NAA”

✓ located verbatim in the source · abstract, characters 605–651 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

NAA enhanced softening and starch loss in fruit held on the tree 3 to 5 weeks beyond optimal harvest.

Material
'Delicious'e0
Treatment
NAAe0
Outcome
softening and loss of starche0
Direction
enhancede0
Qualifier
3 to 5 weeks after the optimum harvest datee0

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

“When fruit were left on the tree for periods of 3 to 5 weeks after the optimum harvest date, NAA enhanced softening and loss of starch and increased water core of 'Delicious'.”

✓ located verbatim in the source · abstract, characters 652–827 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

NAA increased water core in delayed-harvest Delicious fruit.

Material
'Delicious'e0
Treatment
NAAe0
Outcome
water coree0
Direction
increasede0
Qualifier
3 to 5 weeks after the optimum harvest datee0

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

“When fruit were left on the tree for periods of 3 to 5 weeks after the optimum harvest date, NAA enhanced softening and loss of starch and increased water core of 'Delicious'.”

✓ located verbatim in the source · abstract, characters 652–827 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

NAA generally left soluble solids and red color unchanged.

Treatment
NAAe0
Outcome
Soluble solids and red colore0
Direction
unchangede0

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

“Soluble solids and red color generally were unchanged by NAA.”

✓ located verbatim in the source · abstract, characters 827–888 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ethephon sprays hastened fruit drop.

Treatment
Ethephon sprayse0
Outcome
rate of fruit drope0
Direction
hastenede0

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

“Ethephon sprays hastened the rate of fruit drop.”

✓ located verbatim in the source · abstract, characters 888–936 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NAA mixed with ethephon delayed ethephon-induced fruit drop.

Treatment
NAA was tank mixed with ethephone0
Outcome
fruit drop caused by ethephone0
Direction
delayede0
Comparator
ethephone0

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

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

Verbatim

e0

“When NAA was tank mixed with ethephon, it delayed fruit drop caused by ethephon, but AVG did not.”

✓ located verbatim in the source · abstract, characters 936–1033 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

AVG mixed with ethephon did not delay ethephon-induced fruit drop.

Treatment
AVGe0
Outcome
fruit drop caused by ethephone0
Direction
did note0
Comparator
ethephone0

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

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

Verbatim

e0

“When NAA was tank mixed with ethephon, it delayed fruit drop caused by ethephon, but AVG did not.”

✓ located verbatim in the source · abstract, characters 936–1033 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Superior oil or Regulaid surfactant did not affect NAA or AVG responses.

Treatment
superior oil or Regulaid surfactante0
Outcome
NAA or AVG responsese0
Direction
did not affecte0

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

“The use of superior oil or Regulaid surfactant did not affect NAA or AVG responses”

✓ located verbatim in the source · abstract, characters 1033–1115 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Silicone surfactant ABG 7011 promoted AVG effectiveness.

Treatment
silicone surfactant ABG 7011e0
Outcome
effectiveness of AVGe0
Direction
promotede0

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

“the silicone surfactant ABG 7011 promoted the effectiveness of AVG.”

✓ located verbatim in the source · abstract, characters 1126–1193 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Tank mixing pesticides did not affect the fruit-drop responses to AVG or NAA.

Treatment
Tank mixing with pesticides (Guthion + Lannate + Captan)e0
Outcome
responses of AVG or NAA on fruit drope0
Direction
did not affecte0

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

“Tank mixing with pesticides (Guthion + Lannate + Captan) did not affect the responses of AVG or NAA on fruit drop.”

✓ located verbatim in the source · abstract, characters 1193–1307 · show in text ↑
t0

“‘Delicious’ Apples”

✓ located verbatim in the source · title, characters 82–100 · show in text ↑

1-naphthaleneacetic acid · yield · Malus domestica (apple)Results differ

65 papers: 50 positive, 15 negative or no effect

49 papers in the same direction as this paper · 15 in the opposite direction

  1. positive
  2. positive
  3. positive

61 papers more in this group

See all 65 papers →

(2-chloroethyl)phosphonic acid · yield · Malus domestica (apple)Results differ

73 papers: 44 positive, 29 negative or no effect

43 papers in the same direction as this paper · 29 in the opposite direction

  1. negative
  2. positive
  3. positive

69 papers more in this group

See all 73 papers →

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

5 papers: 1 positive, 4 negative or no effect

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

  1. positive
  2. negative
  3. negative

1 paper more in this group

See all 5 papers →

1-naphthaleneacetic acid · quality: sugar starch · Malus domestica (apple)Positive and negative results

8 papers: 4 positive, 4 negative or no effect

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

  1. negative
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

azinphos-methyl · yield · Malus domestica (apple)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. no effect
See all 2 papers →

methomyl · yield · Malus domestica (apple)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. no effect
See all 2 papers →

surfactant · molecular: metabolites · Malus domestica (apple)Results agree

4 papers: 0 positive, 4 negative or no effect

3 papers in the same direction as this paper

  1. no effect
  2. no effect
  3. no effect
See all 4 papers →

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

10 papers: 5 positive, 5 negative or no effect

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

  1. positive
  2. positive
  3. positive

6 papers more in this group

See all 10 papers →

8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.