Paper · 2000 · HortScience

164 Combinations of Chemical Thinners for Bloom and Post-bloom Apple Thinning

R.E. Byers; D.H. Carbaugh; L.D. Combs

19
claims
38
verbatim quotes
0
citations
3
research areas
✓
Open access

Abstract

Effectiveness of pollination/fertilization inhibitors for flower thinning depends highly on the precise timing of sprays within 24 to 36 h after flower opening. In 1999, cool weather delayed the application of hormone-type thinners, which were intended for at bloom comparison with pollination/fertilization. Pollination inhibitors applied in bloom and hormone thinners applied at petal fall or 8 mm fruit diameter caused good fruit thinning. Ethephon applied in bloom did not cause thinning of `Empire' fruit, but Sevin + Accel + Oil caused good fruit thinning when applied in bloom. Sevin + Accel + Oil increase fruit diameter and did not affect fruit russet. Ethephon applied at 22 mm fruit diameter at water rates of 935 L/ha or 3741 L/ha and chemical rates of 21.5 L/ha or 42.9 L/ha did not cause significant fruit thinning. In 1998, pollination inhibitors and hormone-type growth regulators caused flower and fruit thinning of `Starkrimson'/MM111/106 trees. Good thinning occurred with both pollination inhibitors and ethephon treatments; but Sevin + Accel + oil was not as effective. Thinex caused the most side russet. Treatments that thinned generally caused increased fruit diameter. In 1999, return bloom was promoted by early thinning, but ethephon did not appear to promote return bloom beyond the thinning effect. In 1998, endothall caused good thinning of `York'/MM.111 with a minimum of foliage injury. Fruit diameter was increased. Thinning with endothall in 1998 greatly increased return bloom in 1999, but trees were slightly over thinned. Fruit injury caused by carbaryl was almost non-existant in 1999 in two tests having over 25 carbaryl treatments that compared different formulations and adjuvants for thinning and injury. Some very slight, non-significant injury, may have occurred with three of nine formulations tested when trees were shaded. Shading trees for 1 day in conjunction with carbaryl sprays also did not promote injury. In a previous year, shading trees promoted carbaryl injury. A tank mix of Oil with either 50WP, 80WP, XLR, or 4L formulations caused 3 to 8% of the fruit to show injury at a very low intensity. However, in an adjoining block, Sevin + Accel + Regulaid caused injury to >50% of the fruit when applied the same day as the other experiments. Further investigations on this problem are in progress.

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Claims 19

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pollination inhibitors applied in bloom and hormone thinners applied at petal fall or 8 mm fruit diameter caused good fruit thinning of apple.

Treatment
Pollination inhibitors applied in bloom and hormone thinners applied at petal fall or 8 mm fruit diametere0
Outcome
fruit thinninge0
Direction
increaseinferrede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Pollination inhibitors applied in bloom and hormone thinners applied at petal fall or 8 mm fruit diameter caused good fruit thinning”

✓ located verbatim in the source · abstract, characters 309–441 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Ethephon applied in bloom did not cause thinning of Empire fruit.

Material
Empiree0
Treatment
Ethephon applied in bloome0
Outcome
thinning of `Empire' fruite0
Direction
no_changeinferrede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Ethephon applied in bloom did not cause thinning of `Empire' fruit”

✓ located verbatim in the source · abstract, characters 443–509 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sevin + Accel + Oil applied in bloom caused good fruit thinning.

Treatment
Sevin + Accel + Oile0
Outcome
fruit thinninge0
Direction
increaseinferrede0
Qualifier
when applied in bloome0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Sevin + Accel + Oil caused good fruit thinning when applied in bloom”

✓ located verbatim in the source · abstract, characters 515–583 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sevin + Accel + Oil increased fruit diameter.

Treatment
Sevin + Accel + Oile0
Outcome
fruit diametere0
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

t0

“Apple”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Sevin + Accel + Oil increase fruit diameter and did not affect fruit russet”

✓ located verbatim in the source · abstract, characters 585–660 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Sevin + Accel + Oil did not affect fruit russet.

Treatment
Sevin + Accel + Oile0
Outcome
fruit russete0
Direction
no_changeinferrede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Sevin + Accel + Oil increase fruit diameter and did not affect fruit russet”

✓ located verbatim in the source · abstract, characters 585–660 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Ethephon applied at 22 mm fruit diameter at the tested water and chemical rates did not cause significant fruit thinning.

Treatment
Ethephon applied at 22 mm fruit diametere0
Outcome
fruit thinninge0
Direction
no_changeinferrede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Ethephon applied at 22 mm fruit diameter at water rates of 935 L/ha or 3741 L/ha and chemical rates of 21.5 L/ha or 42.9 L/ha did not cause significant fruit thinning”

✓ located verbatim in the source · abstract, characters 662–828 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In 1998, pollination inhibitors and hormone-type growth regulators caused flower and fruit thinning of Starkrimson/MM111/106 trees.

Material
Starkrimsone0
Treatment
pollination inhibitors and hormone-type growth regulatorse0
Outcome
flower and fruit thinninge0
Direction
increaseinferrede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“In 1998, pollination inhibitors and hormone-type growth regulators caused flower and fruit thinning of `Starkrimson'/MM111/106 trees”

✓ located verbatim in the source · abstract, characters 830–962 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ethephon treatments gave good thinning.

Treatment
ethephon treatmentse0
Outcome
thinninge0
Direction
increaseinferrede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Good thinning occurred with both pollination inhibitors and ethephon treatments”

✓ located verbatim in the source · abstract, characters 964–1043 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Sevin + Accel + oil was not as effective for thinning as pollination inhibitors and ethephon.

Treatment
Sevin + Accel + oile0
Outcome
not as effectivee0
Direction
lowerinferrede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Sevin + Accel + oil was not as effective”

✓ located verbatim in the source · abstract, characters 1049–1089 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Thinex caused the most side russet.

Treatment
Thinexe0
Outcome
side russete0
Direction
moste0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Thinex caused the most side russet”

✓ located verbatim in the source · abstract, characters 1091–1125 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatments that thinned generally caused increased fruit diameter.

Treatment
Treatments that thinnede0
Outcome
fruit diametere0
Direction
increasede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Treatments that thinned generally caused increased fruit diameter”

✓ located verbatim in the source · abstract, characters 1127–1192 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In 1999, early thinning promoted return bloom.

Treatment
early thinninge0
Outcome
return bloome0
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

t0

“Apple”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“In 1999, return bloom was promoted by early thinning”

✓ located verbatim in the source · abstract, characters 1194–1246 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Ethephon did not appear to promote return bloom beyond the thinning effect.

Treatment
ethephone0
Outcome
return bloome0
Direction
did not appear to promotee0
Qualifier
beyond the thinning effecte0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“ethephon did not appear to promote return bloom beyond the thinning effect”

✓ located verbatim in the source · abstract, characters 1252–1326 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In 1998, endothall caused good thinning of York/MM.111 trees with a minimum of foliage injury.

Material
Yorke0
Treatment
endothalle0
Outcome
good thinninge0
Direction
increaseinferrede0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“In 1998, endothall caused good thinning of `York'/MM.111 with a minimum of foliage injury”

✓ located verbatim in the source · abstract, characters 1328–1417 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Thinning with endothall in 1998 greatly increased return bloom in 1999, but trees were slightly over thinned.

Treatment
Thinning with endothalle0
Outcome
return bloome0
Direction
greatly 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

t0

“Apple”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Thinning with endothall in 1998 greatly increased return bloom in 1999”

✓ located verbatim in the source · abstract, characters 1449–1519 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fruit injury caused by carbaryl was almost non-existent in 1999.

Treatment
carbaryle0
Outcome
Fruit injurye0
Direction
almost non-existante0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Fruit injury caused by carbaryl was almost non-existant in 1999”

✓ located verbatim in the source · abstract, characters 1559–1622 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Shading trees for 1 day together with carbaryl sprays did not promote fruit injury.

Treatment
Shading trees for 1 day in conjunction with carbaryl sprayse0
Outcome
injurye0
Direction
did not promotee0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“Shading trees for 1 day in conjunction with carbaryl sprays also did not promote injury”

✓ located verbatim in the source · abstract, characters 1870–1957 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

A tank mix of Oil with the 50WP, 80WP, XLR or 4L formulations caused 3 to 8% of the fruit to show injury at a very low intensity.

Treatment
A tank mix of Oil with either 50WP, 80WP, XLR, or 4L formulationse0
Outcome
injurye0
Direction
causede0
Value
3 to 8%e0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“A tank mix of Oil with either 50WP, 80WP, XLR, or 4L formulations caused 3 to 8% of the fruit to show injury at a very low intensity”

✓ located verbatim in the source · abstract, characters 2019–2151 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Sevin + Accel + Regulaid caused injury to more than 50% of the fruit in an adjoining block.

Treatment
Sevin + Accel + Regulaide0
Outcome
injurye0
Direction
causede0
Value
>50%e0

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”

✓ located verbatim in the source · title, characters 63–68 · show in text ↑
e0

“in an adjoining block, Sevin + Accel + Regulaid caused injury to >50% of the fruit”

✓ located verbatim in the source · abstract, characters 2162–2244 · show in text ↑

carbaryl · yield · Malus domestica (apple)Results differ

42 papers: 32 positive, 10 negative or no effect

31 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

38 papers more in this group

See all 42 papers →

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

73 papers: 44 positive, 29 negative or no effect

28 papers in the same direction as this paper · 44 in the opposite direction

  1. positive
  2. positive
  3. positive

69 papers more in this group

See all 73 papers →

application · crop injury · Malus domestica (apple)Positive and negative results

25 papers: 7 positive, 18 negative or no effect

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

  1. positive
  2. positive
  3. positive

21 papers more in this group

See all 25 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. no effect
  3. negative

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.