Free abscisic acid (ABA) in Yellow Globe Danvers onion tissues was
determined during maturation and storage. The amount of ABA in leaf
tissue reached a maximum (1.81 ng/gm dry weight) at 40% top fall. Neck
tissue ABA reached a maximum (0.33 ng/gm dry weight) at 60-70% top fall.
ABA of...
Pre-harvest foliar desiccation of Yellow Globe Danvers onions was
investigated as a means to improve harvest procedure and to reduce
storage losses. Foliar desiccation tended to increase storage disease
and sprouting incidence versus the untreated controls. Paraquat
approximately doubled storage disease in both years. Stoddard solvent
and ethephon increased disease...
Published January 1934. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published February 1965. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Irrigation scheduling is directly related to profitable onion production and sustainable agricultural practices. Research at the Oregon State University Malheur Experiment Station has demonstrated that onion yield and grade are very closely related to irrigation practices, especially the criterion used to schedule irrigations. Careful attention to irrigation scheduling can help...
In vitro tests showed mycelial growth of Pyrenochaeta
terrestris was inhibited by root and bulb extracts from the pink root
resistant onion cultivar Nebuka, but not by extracts from the susceptible
Southport White Globe. The active principle was shown to be
fungistatic rather than fungicidal. It is present in both...
Observations of bacterial soft rot of onions in the Lake Labish
area in the Willamette Valley of western Oregon showed that two distinct
symptom types occur during the growing season. The most
prevalent symptom type appears in infected plants as a wilting and
chlorosis of two or more lower leaves...