Work

Onion Plant Size and Timing for Ethephon-induced Inhibition of Bolting1

Year: 1980

Type: article

Abstract: Late-winter application of 5000 ppm (2-chloroethyl)phosphonic acid (ethephon) to fall-seeded short- day onions ( Allium cepa L.) retarded leaf growth and inhibited bolting. Bolting inhibition was significantly correlated with bulb diameter at time of treatment. Bolting inhibition was greatest when bulb diameter was 0.9 to 1.6 cm at time of treatment. Bulb diameter in late February or early March was an effective criterion for the effectiveness of ethephon treatment to reduce bolting. When ethephon treatments greatly reduced bolting, the number of harvestable bulbs and yields were increased, but when bolting percentage in control plots was low, ethephon reduced yield by decreasing average bulb weight at harvest.

Source: Journal of the American Society for Horticultural Science

DOI: 10.21273/jashs.105.1.66

Authors: Juan Izquierdo, J. N. Corgan

Institution: New Mexico State University

Language: English

Topic: Flowering Plant Growth and Cultivation

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $3,500