Claim · model-written summary
Carbaryl plus oil on the first day of shade caused more apple fruit thinning than after one full sun day.
- Taxon
- apple
Malus domesticat0 - Treatment
- carbaryl + oil were applied on the first day of artificially shaded treese0
- Outcome
- thinninge0
- Direction
- moree0
- Comparator
- one day of full sun before the thinner was appliede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“apple fruit”
e0“When carbaryl + oil were applied on the first day of artificially shaded trees, more thinning occurred than if no shade was applied or if trees were exposed to one day of full sun before the thinner was applied”
Title
The influence of low light on apple fruit abscission
R. E. Byers; D. H. Carbaugh; C. N. Presley; et al. Journal of Horticultural Science 1991. doi:10.1080/00221589.1991.11516119
Other claims from this paper (15)
- Intervention effect Removing stigma and half the style caused 98% of apple fruit to drop by 15 days after full bloom.
- Intervention effect Two or three days of 92% artificial shade reduced apple fruit set to 83-93% at 14, 21 and 28 days after full bloom.
- Intervention effect Shade applied 8, 35, or 42 days after full bloom did not influence apple fruit drop.
- Intervention effect Apple fruit stopped growing during and for up to six days after three days of shade.
- Intervention effect Apple fruit dropped 7-12 days after three days of shade.
- Association Naturally occurring apple fruit drop from 15 to 40 days after full bloom appeared related to 2-4 days of cloudy weather.
- Observation Low light from 3-4 cloudy days was calculated as equivalent to 2-3 days of 92% artificial shade.
- Intervention effect One or two sunlit days separating shaded days reduced apple fruit thinning.
- Intervention effect Two days of shade caused more apple fruit drop than NAA, ethephon or carbaryl plus oil thinning sprays.
- Intervention effect Carbaryl plus oil on the first day of shade caused more apple fruit thinning than carbaryl plus oil without shade.
- Intervention effect Three days of whole-tree shade caused 98% apple fruit abscission when fruit diameter was 20 mm.
- Intervention effect On a limb left in the sun, 70% of apple fruit were retained during whole-tree shading.
- Intervention effect A shaded limb retained only 5% of apple fruit during whole-tree shading.
- Intervention effect Shading one limb for three days caused 45% apple fruit abscission on that limb.
- Intervention effect Shading one limb for three days did not affect apple fruit set on the rest of the tree.