carbaryl · Yield · Malus domestica (apple)

Results differ42 papers: 32 positive, 10 negative or no effect · 22 pairs of papers confirmed to differ

70 claims from these papers; 17 citations between them.

Papers whose results differ, checked claim by claim 22

22 pairs of papers on this question report results that differ: an effect in one paper, the opposite effect or no effect in the other. Two model reviewers reading both claims accepted each pair.

Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Effect of Bioregulators on Apple Yield and Quality Attributes (2005)
decreaseCarbaryl reduced apple fruit set versus unsprayed trees.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
Thinning of Spur `Delicious' Apples by Shade, Terbacil, Carbaryl, and Ethephon (1990)
decreaseCarbaryl spraying reduced fruit set by 25%.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Effects of Accel and Carbaryl on Apple Tree Nutrition and Fruit Yield (2005)
increaseCarbaryl significantly increased apple yield.
Thinning 'Golden Delicious' and Spur 'Delicious' with Combinations of Carbamates and NAA (2002)
decreaseCarbaryl reduced fruit set and yield on Smoothee Golden Delicious in one of two years.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Certain chemical thinning treatments advance maturity of Paulared apple (2001)
increaseCarbaryl alone improved fruit size at harvest in Paulared apple.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Comparison of NAA and Carbaryl Petal-fall Sprays on Fruit Set of Apples (1993)
decreaseSevin reduced apple fruit set to one fruit per cluster.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Chemical thinning of the apple cultivar Spartan (1987)
decreaseCarbaryl at 10 or 14 mm fruitlet diameter reduced fruits per tree.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →

Show 16 more pairs

Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Timing of application of carbaryl used as an apple fruitlet thinner (1987)
decreaseCarbaryl reduced fruit number uniformly across application times in Bramley, Discovery and Spartan.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Chemical fruit thinning of two early-season apple cultivars, Discovery and George Cave (1981)
increaseCarbaryl at 2100 ppm applied at 10-14 mm fruitlet diameter increased average fruit size of cv George Cave.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Chemically Thinning Spur `Delicious' Apples with Carbaryl, NAA, and Ethephon at Various Stages of Fruit Development (1996)
decreaseCarbaryl reduced fruit set at 4 to 15 mm.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
THE INFLUENCE OF APPLE TREE CHEMICAL THINNING ON YIELD AND FRUIT QUALITY (2013)
decreaseCarbaryl reduced Mondial Gala fruit number.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
301 Bioregulators Affect Apple Yield and Quality Attributes (1999)
decreaseCarbaryl reduced fruit set relative to unsprayed trees.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Effects of Dilute and Concentrated Sprays of NAA and Carbaryl in Combination with Daminozide and Pesticides on Fruit Size and Return Bloom of ‘Starkrimson Delicious’ Apple1 (1983)
increaseSeparate dilute carbaryl sprays significantly increased apple fruit size.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Thinning 'Golden Delicious' and Spur 'Delicious' with Combinations of Carbamates and NAA (2002)
decreaseCarbaryl reduced fruit set and yield on Smoothee Golden Delicious in one of two years.
300 Bioregulators Can Affect Apple Mineral Nutrition (1999)
increaseCarbaryl thinned apple fruit and increased yields.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit (2004)
no changeCarbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
Thinning of Spur `Delicious' Apples by Shade, Terbacil, Carbaryl, and Ethephon (1990)
decreaseCarbaryl spraying reduced fruit set by 25%.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
Effect of Bioregulators on Apple Yield and Quality Attributes (2005)
decreaseCarbaryl reduced apple fruit set versus unsprayed trees.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
Comparison of NAA and Carbaryl Petal-fall Sprays on Fruit Set of Apples (1993)
decreaseSevin reduced apple fruit set to one fruit per cluster.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
Chemical thinning of the apple cultivar Spartan (1987)
decreaseCarbaryl at 10 or 14 mm fruitlet diameter reduced fruits per tree.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
Timing of application of carbaryl used as an apple fruitlet thinner (1987)
decreaseCarbaryl reduced fruit number uniformly across application times in Bramley, Discovery and Spartan.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
Thinning 'Golden Delicious' and Spur 'Delicious' with Combinations of Carbamates and NAA (2002)
decreaseCarbaryl reduced fruit set and yield on Smoothee Golden Delicious in one of two years.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
Chemically Thinning Spur `Delicious' Apples with Carbaryl, NAA, and Ethephon at Various Stages of Fruit Development (1996)
decreaseCarbaryl reduced fruit set at 4 to 15 mm.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
THE INFLUENCE OF APPLE TREE CHEMICAL THINNING ON YIELD AND FRUIT QUALITY (2013)
decreaseCarbaryl reduced Mondial Gala fruit number.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Chemical Thinning ‘Fuji’ Apple in theMidwest (2000)
no changeCarbaryl alone generally did not reduce Fuji apple fruit set.
301 Bioregulators Affect Apple Yield and Quality Attributes (1999)
decreaseCarbaryl reduced fruit set relative to unsprayed trees.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →

How these papers cite each other

17 citations between these papers: 10 on the same side, 7 across the two sides.

Positive result
Negative result or no effect
Citation, pointing to the cited paper
Citation across the two sides
Larger circle: more citations overall

Years run left to right. Citations come from the papers’ OpenAlex reference lists. Hover a paper to bring forward its citations; click it to open the paper.

Papers reporting a positive result 32

Carbaryl as a Fruit Thinning Agent · 1967
- positive
  Carbaryl stimulated lateral fruitlet abscission more than terminal fruitlet abscission.
  compared with terminal ones
cited by 1 paper here
Chemical fruit thinning of two early-season apple cultivars, Discovery and George Cave · 1981
- positive
  Carbaryl at 2100 ppm applied at 10-14 mm fruitlet diameter increased average fruit size of cv George Cave.
- positive
  Carbaryl at 2100 ppm applied at 12-14 mm fruitlet diameter reliably reduced the number of cv Discovery fruitlets retained to harvest.
cited by 2 papers here
Translocation properties of carbaryl in relation to its use as an apple fruitlet thinner · 1983
- positive
  Localized treatment of apple fruitlets, pedicels or bourse shoot leaves with 2 100 ppm carbaryl caused significant fruitlet abscission.
cites 2 papers herecited by 2 papers here
Effects of Dilute and Concentrated Sprays of NAA and Carbaryl in Combination with Daminozide and Pesticides on Fruit Size and Return Bloom of ‘Starkrimson Delicious’ Apple1 · 1983
- positive
  Separate dilute carbaryl sprays significantly increased apple fruit size.
- positive
  Separate concentrated carbaryl sprays significantly increased apple fruit size.
- positive
  Concentrated carbaryl sprays produced more return bloom than NAA.
  compared with NAA
cited by 1 paper here
Chemical Fruit Thinning Response of Spur ‘Delicious’ Apple as Influenced by Light Intensity and Soil Moisture · 1987
- positive
  Ethephon plus carbaryl reduced apple fruit set.
cited by 1 paper here
Chemical thinning of the apple cultivar Spartan · 1987
- positive
  Carbaryl at 10 or 14 mm fruitlet diameter reduced fruits per tree.
Timing of application of carbaryl used as an apple fruitlet thinner · 1987
- positive
  Carbaryl reduced fruit number uniformly across application times in Bramley, Discovery and Spartan.
The effect of some chemical agents on thinning of Golden Delicious and Granny Smith apples · 1989
- positive
  Carbaryl increased Granny Smith gross income by 40% against hand thinning.
  compared with hand-thinned control
- no effect
  Carbaryl gave Granny Smith fruit the same size as hand thinning.
  compared with hand-thinned control
cites 1 paper here
Thinning of Spur `Delicious' Apples by Shade, Terbacil, Carbaryl, and Ethephon · 1990
- positive
  Shade plus carbaryl reduced fruit set by 89%.
- positive
  Carbaryl spraying reduced fruit set by 25%.
cites 1 paper herecited by 2 papers here
CHEMICAL THINNING OF `GRANNY SMITH' APPLE · 1990
- positive
  Carbaryl had a slightly greater effect on return bloom than NAA and NAD
  compared with NAA and NAD
CHEMICAL THINNING OF `GRANNY SMITH' APPLE · 1990
- positive
  Carbaryl had a slightly greater return bloom effect than NAA and NAD.
  compared with NAA and NAD
- positive
  Carbaryl provided reasonable thinning by fruit set counts.
- positive
  Carbaryl applied in 1988 improved return bloom in 1989 over control.
  compared with control
Comparison of NAA and Carbaryl Petal-fall Sprays on Fruit Set of Apples · 1993
- positive
  Sevin at petal fall or seven days later reduced fruit set.
- positive
  Sevin reduced apple fruit set to one fruit per cluster.
cited by 2 papers here
Combination Sprays with Benzyladenine to Chemically Thin Spur-type `Delicious' Apples · 1994
- positive
  BA and carbaryl were more effective than NAA at increasing return bloom.
  compared with NAA
cites 2 papers herecited by 1 paper here
Benzyladenine and carbaryl effects on fruit thinning and the enhancement of return flowering of three apple cultivars · 1995
- positive
  Carbaryl appeared to enhance return flowering most on strong, exposed Jonagold spurs that bore fruit.
- positive
  Fruit set per return flower cluster tended to be higher in Jonagold trees treated with carbaryl the prior season.
- positive
  Carbaryl reduced Braeburn overall fruit set at both treatment times, particularly on spur clusters.
  compared with unthinned control
- positive
  Late carbaryl enhanced Braeburn return flowering on spurs and laterals.
- positive
  Carbaryl increased mean Royal Gala fruit weight at harvest.
- positive
  Carbaryl reduced Jonagold overall fruit set at two of three application times.
- positive
  Carbaryl reduced Jonagold fruit set more effectively on lateral clusters than spurs.
  compared with spurs
- no effect
  Neither carbaryl nor 6-BA reduced early overall fruit set in Royal Gala.
cites 2 papers herecited by 1 paper here
`Empire' Apple Responses to Fruit-thinning Chemicals · 1995
- positive
  NAA plus carbaryl significantly reduced fruit set by 26%.
  compared with nontreated control
- positive
  NAA plus carbaryl produced significantly larger fruit than other treatments.
  compared with all other treatments
Chemically Thinning Spur `Delicious' Apples with Carbaryl, NAA, and Ethephon at Various Stages of Fruit Development · 1996
- positive
  Carbaryl reduced fruit set at 4 to 15 mm.
cited by 1 paper here
Carbaryl as a Component in Integrated Crop Management of Apple · 1997
- positive
  Adding carbaryl to naphthaleneacetic acid or 6-benzyl adenine increased apple fruit size in most cases.
  compared with naphthaleneacetic acid or 6-benzyl adenine
Multi-site Thinning Comparisons with `Empire' and `McIntosh' Apples · 1997
- positive
  At the same crop load, the carbaryl combination produced better fruit size than NAA.
  compared with NAA
Commercial-scale Use of Hydrogen Cyanamide for Apple and Peach Blossom Thinning · 1998
- positive
  Cyanamide followed by carbaryl and NAA produced larger Law Rome fruit.
  compared with carbaryl + NAA treatment
- positive
  Adding postbloom carbaryl significantly increased Early Spur Rome fruit size.
  compared with application of hydrogen cyanamide alone
- positive
  Cyanamide followed by carbaryl and NAA significantly lowered Law Rome fruit set relative to carbaryl and NAA.
  compared with carbaryl + NAA treatment
300 Bioregulators Can Affect Apple Mineral Nutrition · 1999
- positive
  Carbaryl thinned apple fruit and increased yields.
301 Bioregulators Affect Apple Yield and Quality Attributes · 1999
- positive
  Carbaryl reduced fruit set relative to unsprayed trees.
  compared with unsprayed trees
302 Accel and Carbaryl Affect Apple Thinning · 1999
- positive
  Carbaryl reduced fruit set of three apple cultivars over two years.
Chemical Thinning ‘Fuji’ Apple in theMidwest · 2000
- positive
  Combined carbaryl and BA increased Fuji apple return bloom in four of five years.
- no effect
  Carbaryl alone generally did not reduce Fuji apple fruit set.
Comparison of the most frequently used apple thinning compounds for the thinning of 'Jonagold', 'Elstar' and 'Golden Delicious' apples · 2000
- positive
  carbaryl produced promoted return bloom.
164 Combinations of Chemical Thinners for Bloom and Post-bloom Apple Thinning · 2000
- positive
  Sevin + Accel + Oil increased fruit diameter.
Fruit Weight, Cropload, and Return Bloom of 'Empire' Apple Following Thinning with 6-Benzyladenine and NAA at Several Phenological Stages · 2001
- positive
  NAA plus carbaryl increased adjusted fruit weight in all four PF or 5-mm KFD treatments.
- positive
  NAA plus carbaryl increased adjusted fruit weight in only one of four 10- or 15-mm KFD treatments.
- positive
  NAA plus carbaryl at 10 or 15 mm KFD tripled return bloom relative to treatments with similar cropload effects.
  compared with NAA + carbaryl at PF or 5 mm or BA at 10-mm KFD
cites 2 papers here
Certain chemical thinning treatments advance maturity of Paulared apple · 2001
- positive
  Carbaryl alone improved fruit size at harvest in Paulared apple.
cites 1 paper here
Thinning `Fuji' Apple Blossoms with Synthetic Auxins (MCPB-ethyl or NAA) and Ethephon with or without Postbloom Thinning with Carbaryl · 2002
- positive
  Carbaryl promoted return flowering more strongly than ethephon.
  compared with Ethephon
- positive
  Combined ethephon and carbaryl benefited return flowering.
cites 2 papers here
Effects of Naphthalene Acetic Acid, Carbaryl and Accel on Thinning of Apples · 2005
- positive
  Accel and Carbaryl reduced fruits per limb area relative to unsprayed trees.
  compared with unsprayed trees
- positive
  Accel and carbaryl increased fruit length, diameter and their ratio.
Effects of Accel and Carbaryl on Apple Tree Nutrition and Fruit Yield · 2005
- positive
  Carbaryl significantly increased apple yield.
  compared with unsprayed controls
THE INFLUENCE OF APPLE TREE CHEMICAL THINNING ON YIELD AND FRUIT QUALITY · 2013
- positive
  Carbaryl reduced Mondial Gala fruit number.
Thinning response of Gala and Honeycrisp apple trees to lime sulfur and ATS blossom thinners in combination with carbaryl as a fruitlet thinner · 2026
- positive
  Carbaryl produced greater reductions in fruit set and crop load.

Papers reporting a negative result or no effect 10

NAA and Sevin on Composition, Development, and Abscission of Apple Fruit1 · 1973
- negative
  Sevin sprays on both dates reduced fruit set.
cited by 1 paper here
Effect of Chemical Thinners on Fruit Set and Fruit Characteristics of AVG-treated Apples · 1983
- negative
  Carbaryl reduced fruit set on AVG-treated limbs to the check level.
  compared with check limbs
Effect of Chemical Thinning Sprays on Apple Fruit Set · 1991
- no effect
  Carbaryl did not affect viable seed numbers.
cites 1 paper herecited by 2 papers here
COMPARISON OF NAA AND SEVIN PETAL FALL SPRAYS ON FRUIT SET OF APPLES · 1993
- no effect
  Sevin applied at petal fall had no reduction in fruit size.
- no effect
  Sevin applied at petal fall had no reduction in fruit seed number.
Apple fruitlet thinning and photosynthate supply · 1998
- no effect
  Carbaryl did not enhance shading-induced abscission.
  compared with shadingNo difference from an alternative treatment
519 The Negative Impact of Sevin XLR Plus Thinner Use on Apple Fruit Quality under Certain Environmental Conditions · 1999
Thinning 'Golden Delicious' and Spur 'Delicious' with Combinations of Carbamates and NAA · 2002
- negative
  Carbaryl reduced fruit set and yield on Smoothee Golden Delicious in one of two years.
cites 1 paper here
Individual and combined effects of shading and thinning chemicals on abscission and dry-matter accumulation of ‘Royal Gala’ apple fruit · 2004
- no effect
  Carbaryl thinning in 2000 had no effect on spur fruit abscission or growth.
cites 2 papers here
Effect of Bioregulators on Apple Yield and Quality Attributes · 2005
- negative
  Carbaryl 0.1% was among the most effective concentrations for reducing apple fruit set.
- negative
  Carbaryl reduced apple fruit set versus unsprayed trees.
  compared with unsprayed trees
- negative
  Carbaryl 0.2% was among the most effective concentrations for reducing apple fruit set.
Apple fruitlet thinning of Golden Delicious trees · 2013
- no effect
  Ethephon applied jointly with carbaryl did not increase fruit size.

A paper is on the positive side when any of its claims here is positive. Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.

carbaryl · Yield · Malus domestica (apple)

Papers whose results differ, checked claim by claim 22

How these papers cite each other

Papers reporting a positive result 32

Papers reporting a negative result or no effect 10

carbaryl on Malus domestica (apple) against other targets

carbaryl · yield on other organisms