Claim · model-written summary
Fall and late winter ethephon reduced onion bolting.
- Taxon
- onion
Allium cepae0 - Treatment
- ethephon) at 2500 or 5000 ppme0
- Outcome
- boltinge0
- Direction
- reducede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Fall and late-winter treatments of (2-chloroethyl)phosphonic acid (ethephon) at 2500 or 5000 ppm reduced bolting of fall-planted, short-day cultivars of onion ( Allium cepa L.)”
Title
Bolting Control by Ethephon in Fall-planted, Short-day Onions1
J. N. Corgan; Juan Izquierdo Journal of the American Society for Horticultural Science 1979. doi:10.21273/jashs.104.3.387
Other claims from this paper (8)
- Intervention effect Ethephon inhibited onion plant growth.
- Intervention effect Ethephon reduced onion bulb size.
- Intervention effect Ethephon reduced yield when control bolting was low.
- Intervention effect Ethephon reduced yield when cool spring weather restricted growth.
- Intervention effect With warm spring weather, ethephon reduced onion bolting from 18% to 3%.
- Intervention effect With warm spring weather, ethephon had no effect on onion yield.
- Intervention effect Ethephon caused winter plant loss in one of three years.
- Association Winter plant loss was greatest after higher fall ethephon rates on very young plants.