Claim · model-written summary
Maleic hydrazide increased set in one experiment but not another.
- Taxon
- Grapet0
- Treatment
- maleic hydrazidee0
- Outcome
- sete0
- Direction
- increasede0
- Qualifier
- in one experiment, but not in anothere0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Verbatim
t0“Grape”
e0“Treating shoot tips on partially defoliated vines with maleic hydrazide delayed shoot elongation; it increased set in one experiment, but not in another.”
Title
B. G. Coombe American Journal of Enology and Viticulture 1959. doi:10.5344/ajev.1959.10.2.85
Other claims from this paper (19)
- Method / resource A method analyzing treatment effects within seed classes was useful.
- Intervention effect Partial defoliation during bloom reduced set and berry size.
- Intervention effect Maleic hydrazide on partially defoliated vines delayed shoot elongation.
- Intervention effect Pinching and topping during bloom increased set by 10 to 30 percent in six of seven experiments.
- Intervention effect Bloom shoot treatments slightly decreased seeds per berry.
- Intervention effect Bloom shoot treatments did not reduce berry weight within seed classes.
- Intervention effect Prebloom topping did not improve set.
- Intervention effect Postbloom topping did not improve set.
- Intervention effect Repeated toppings slightly reduced berry weight.
- Intervention effect All topping treatments considerably reduced pruning weight.
- Observation No harmful topping effects were noted over two years.
- Intervention effect Girdling markedly increased set, particularly fewer-seeded berries, with increased seedless berries or decreased seeds per seeded berry.
- Intervention effect Girdling increased berry weight within each seed class by up to 14 percent.
- Intervention effect Urea foliage sprays did not change set.
- Intervention effect Urea increased berry weight 7.5 percent in two of five experiments.
- Intervention effect Urea on girdled vines sometimes increased and sometimes decreased set.
- Intervention effect Shading effects on fruit set and size were inconclusive.
- Intervention effect Shaded vines had larger leaves with more chlorophyll.
- Intervention effect Gibberellic acid during bloom reduced set in one experiment.