Claim · model-written summary
Two or three days of 92% artificial shade reduced apple fruit set to 83-93% at 14, 21 and 28 days after full bloom.
- Taxon
- apple
Malus domesticat0 - Treatment
- Two or three consecutive days of 92% artificial shadee0
- Outcome
- fruit sete0
- Direction
- reducede0
- Value
- 83-93%e0
- Qualifier
- 14, 21 and 28 days AFBe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apple fruit”
e0“Two or three consecutive days of 92% artificial shade (92% polypropylene shade material) reduced fruit set to 83-93% when trees were shaded 14, 21 and 28 days AFB”
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 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 Carbaryl plus oil on the first day of shade caused more apple fruit thinning than after one full sun day.
- 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.