Claim · model-written summary
Some thinning treatments produced fruit significantly larger than the controls.
- Taxon
- apple
Malus domesticat0 - Organ / stage
- fruite5
- Treatment
- Some thinning treatmentse5
- Outcome
- fruite5
- Direction
- significantly largere5
- Comparator
- the controlse5
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Spray thinning strategies for ‘Red Delicious’ apple using naphthalene acetic acid and ethephon”
e5“Some thinning treatments produced fruit significantly larger than the controls”
Title
Spray thinning strategies for ‘Red Delicious’ apple using naphthalene acetic acid and ethephon
T. B. Koen; K. M. Jones; S. B. Longley Journal of Horticultural Science 1988. doi:10.1080/14620316.1988.11515824
Other claims from this paper (10)
- Intervention effect All Red Delicious apple trees treated with NAA, alone or with ethephon, were over-thinned at the Grove Research Station in Tasmania.
- Intervention effect Full-bloom ethephon at 400 and 800 ppm thinned Red Delicious apple most acceptably.
- Intervention effect Ethephon sprays of 100 and 200 ppm under-thinned Red Delicious apple.
- Observation Mean fruit weight of Red Delicious apple was excellent throughout the trial, approaching the target size even in unthinned controls.
- Intervention effect Fruit was reddened when thinned by NAA alone or with ethephon.
- Intervention effect Ethephon alone reddened fruit less consistently than NAA-based thinning.
- Intervention effect Ethephon, NAA or combination sprays caused no significant yellowing of fruit compared with hand-thinned fruit.
- Intervention effect No thinning treatment affected mean shoot length of Red Delicious apple.
- Recommendation The ethephon-NAA and NAA-ethephon combinations should not be recommended for thinning Red Delicious apple in Tasmania.
- Recommendation Ethephon used alone is the safest and most predictable alternative to hand thinning of apple.