Claim · model-written summary
Four weekly preharvest applications of 5 ppm NAA increased return bloom of Delicious and Golden Delicious as effectively as early summer applications.
- Taxon
- Apple
Malus domesticat0 - Material
- ‘Delicious’ and ‘Golden Delicious’e4
- Treatment
- Four weekly preharvest applications of 5 ppm NAAe4
- Outcome
- return bloome4
- Direction
- increasede4
- Qualifier
- as effectively as early summer applicationse4
- Comparator
- early summer applicationse4
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Return Bloom of Apple”
e4“Four weekly preharvest applications of 5 ppm NAA increased return bloom of ‘Delicious’ and ‘Golden Delicious’ as effectively as early summer applications”
Title
Steven McArtney; Dick Unrath; J.D. Obermiller; et al. HortTechnology 2007. doi:10.21273/horttech.17.1.32
Other claims from this paper (10)
- Intervention effect NAA increased return bloom of apple in six of 10 experiments.
- Intervention effect Ethephon increased return bloom of apple in four of seven experiments.
- Intervention effect Four biweekly applications of 5 ppm NAA in June and July increased return bloom more consistently than fewer applications.
- Intervention effect Combining NAA and ethephon in early summer sprays did not consistently increase return bloom compared with either material alone.
- Association Flower cluster density of Golden Delicious in the year of treatment had a negative effect on return bloom, more pronounced on control trees than on trees sprayed with ethephon.
- Intervention effect Combining four early summer sprays of 316 ppm ethephon with 15 ppm GA4+7 increased return bloom of Cameo.
- Intervention effect The same combined ethephon and GA4+7 sprays had no effect on return bloom of Mutsu or Golden Delicious.
- Intervention effect Growth regulator treatments did not have a consistent effect on fruit firmness in the year of treatment.
- Intervention effect Naphthaleneacetic acid or ethephon treatments in the on year of a biennial bearing cycle can promote return bloom of apple spurs.
- Association The positive effect of the treatments on return bloom may be minimal in cultivars with a strong tendency toward biennial bearing or when bloom or initial fruit set are heavy.