Claim · model-written summary
Applications between full bloom and petal fall were most effective.
- Taxon
- apples
Malus domesticae0e1t0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To be most effective, these materials must be applied between full bloom and petal fall.”
e1“Concentrations of 25 ppm were as effective as 50 ppm but concentrations below 25 ppm were not effective.”
t0“‘Delicious’ Apples”
Title
C. R. Unrath Journal of the American Society for Horticultural Science 1974. doi:10.21273/jashs.99.4.381
Other claims from this paper (13)
- Intervention effect GA and BA at 50 to 200 ppm increased fruit length, weight and length-to-diameter ratio.
- Intervention effect GA and BA did not alter fruit diameter or color.
- Intervention effect Firmness and seed number were reduced only at 200 ppm.
- Intervention effect Concentrations above 50 ppm substantially reduced flower initiation.
- Intervention effect 25 ppm was as effective as 50 ppm, while lower concentrations were ineffective.
- Intervention effect A single application was generally more effective than split applications.
- Intervention effect Repeated annual 50 ppm applications retained a good response without adverse effects.
- Intervention effect In one year, GA and BA significantly reduced fruit set.
- Intervention effect The same applications did not significantly reduce commercial crop.
- Intervention effect Air blast application was as effective as hand gun application with less spray mixture.
- Intervention effect At 25 ppm, average fruit weight response was 12%.
- Intervention effect At 50 ppm, average fruit weight response was 20%.
- Recommendation The authors suggest GA and BA use where post-bloom temperatures reduce typical apple shape.