Paper · 1974 · HortScience

Influence of SADH on Response of ‘McIntosh’ Apples to Chemical Thinning Sprays1

S. J. Leuty

6
claims
11
verbatim quotes
2
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Succinic acid-2,2-dimethylhydrazide (SADH) applied one 01 two consecutive seasons for preharvest drop control did not significantly reduce response of ‘McIntosh’ apples to chemical thinning treatments the following year, and increased dosage of thinning chemicals was not warranted. Pronounced reductions in size of mature fruit the following season induced as a carryover effect of SADH, emphasized the need for chemical thinning. Combinations of carbaryl (Sevin) and naphthaleneacetic acid (NAA) generally enhanced size of SADH inhibited fruit, whereas high levels of NAA failed.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

SADH applied for preharvest drop control in one or two consecutive seasons did not significantly reduce the response of McIntosh apples to chemical thinning treatments the following year

Material
McIntoshe1
Treatment
Succinic acid-2,2-dimethylhydrazide (SADH)e1
Outcome
responsee1
Direction
did not significantly reducee1

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

e1

“Succinic acid-2,2-dimethylhydrazide (SADH) applied one 01 two consecutive seasons for preharvest drop control did not significantly reduce response of ‘McIntosh’ apples to chemical thinning treatments the following year”

✓ located verbatim in the source · abstract, characters 9–228 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Increasing the dosage of thinning chemicals is not warranted for McIntosh apples

Outcome
increased dosage of thinning chemicalse2

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

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

Verbatim

e1

“Succinic acid-2,2-dimethylhydrazide (SADH) applied one 01 two consecutive seasons for preharvest drop control did not significantly reduce response of ‘McIntosh’ apples to chemical thinning treatments the following year”

✓ located verbatim in the source · abstract, characters 9–228 · show in text ↑
e2

“and increased dosage of thinning chemicals was not warranted”

✓ located verbatim in the source · abstract, characters 230–290 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

A carryover effect of SADH reduces the size of mature fruit the following season

Treatment
carryover effect of SADHe3
Outcome
size of mature fruite3
Direction
reductionse3

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

e1

“Succinic acid-2,2-dimethylhydrazide (SADH) applied one 01 two consecutive seasons for preharvest drop control did not significantly reduce response of ‘McIntosh’ apples to chemical thinning treatments the following year”

✓ located verbatim in the source · abstract, characters 9–228 · show in text ↑
e3

“Pronounced reductions in size of mature fruit the following season induced as a carryover effect of SADH”

✓ located verbatim in the source · abstract, characters 292–396 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The reduced fruit size after SADH carryover shows the need for chemical thinning

Outcome
need for chemical thinninge4

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

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

Verbatim

e1

“Succinic acid-2,2-dimethylhydrazide (SADH) applied one 01 two consecutive seasons for preharvest drop control did not significantly reduce response of ‘McIntosh’ apples to chemical thinning treatments the following year”

✓ located verbatim in the source · abstract, characters 9–228 · show in text ↑
e4

“emphasized the need for chemical thinning”

✓ located verbatim in the source · abstract, characters 398–439 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combinations of carbaryl and NAA generally enhance the size of SADH-inhibited fruit

Treatment
Combinations of carbaryl (Sevin) and naphthaleneacetic acid (NAA)e5
Outcome
size of SADH inhibited fruite5
Direction
enhancede5

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

e1

“Succinic acid-2,2-dimethylhydrazide (SADH) applied one 01 two consecutive seasons for preharvest drop control did not significantly reduce response of ‘McIntosh’ apples to chemical thinning treatments the following year”

✓ located verbatim in the source · abstract, characters 9–228 · show in text ↑
e5

“Combinations of carbaryl (Sevin) and naphthaleneacetic acid (NAA) generally enhanced size of SADH inhibited fruit, whereas high levels of NAA failed”

✓ located verbatim in the source · abstract, characters 441–589 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

High levels of NAA fail to enhance the size of SADH-inhibited fruit

Treatment
high levels of NAAe5
Outcome
size of SADH inhibited fruite5
Direction
failede5

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

e1

“Succinic acid-2,2-dimethylhydrazide (SADH) applied one 01 two consecutive seasons for preharvest drop control did not significantly reduce response of ‘McIntosh’ apples to chemical thinning treatments the following year”

✓ located verbatim in the source · abstract, characters 9–228 · show in text ↑
e5

“Combinations of carbaryl (Sevin) and naphthaleneacetic acid (NAA) generally enhanced size of SADH inhibited fruit, whereas high levels of NAA failed”

✓ located verbatim in the source · abstract, characters 441–589 · show in text ↑

Daminozide · growth · Malus domestica (apple)Results differ

23 papers: 10 positive, 13 negative or no effect

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

  1. positive
  2. positive
  3. positive

19 papers more in this group

See all 23 papers →

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

43 papers: 31 positive, 12 negative or no effect

30 papers in the same direction as this paper · 12 in the opposite direction

  1. negative
  2. negative
  3. negative

39 papers more in this group

See all 43 papers →

carbaryl · growth · Malus domestica (apple)Positive and negative results

6 papers: 3 positive, 3 negative or no effect

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

  1. negative
  2. negative
  3. no effect

2 papers more in this group

See all 6 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.