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A compound from onion roots inhibitory to Pyrenochaeta terrestris

Creator:: Pfleger, Francis Louis
Abstract:: 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...
Resource Type:: Dissertation
Full Text:: of the onions in both eastern and western Oregon are grown on land infested with the onion pink root

The etiology of bacterial soft rot of onions and identification of the causal organisms

Creator:: Irwin, Roger Deane
Abstract:: 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...
Resource Type:: Dissertation
Full Text:: extend grateful appreciation to the Western Oregon Onion Growers Association for financial support and

Development of vesicular-arbuscular mycorrhizae and pink root (Pyrenochaeta terrestris) in commercial onion fields in relation to nutrition, pH, and soil fumigation

Creator:: McGraw, Anne-Cressey
Resource Type:: Masters Thesis
Full Text:: roots from commercial onion fields in E. Oregon and S. W. Idaho. Pink root is an important disease in

The identification and quantification of Pyrenochaeta terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots

Creator:: Flota, James Ernest
Resource Type:: Masters Thesis
Full Text:: eastern Oregon, Idaho, and in most other onion growing areas of the U. S. With suc- cessive onion

The genetic analyses of neck-rot (Botrytis allii Munn) resistance, pungency and soluble solids content of onion (Allium cepa L.)

Creator:: Lin, Mau-Wei
Resource Type:: Dissertation
Full Text:: onion pungency 18 Correlations of pyruvic acid, soluble solids and neck-rot disease index 19 III

The comparative value of formaldehyde and of various chemical dusts for the control of onion smut

Creator:: Bedwell, Jesse Leonard
Resource Type:: Masters Thesis
Full Text:: chemical dusts for the control of onion smut THESIS THE COMPARATIVE VALUE OF FORMALDEHYDE AND OF

Oregon vegetable digest ; Vol. 19 No. 2

Creator:: Oregon State University. Agricultural Experiment Station, Frazier, W. A., Varseveld, George, Baggett, James R., Mack, H. J., Vaughan, E. K., Rodgers, J. B., Booster, Dean E., Hay, James R., Duncan, Andrew A., and Pfleger, F. L.
Abstract:: Published April 1970. 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
Resource Type:: Other
Full Text:: vegetable crops produc- tion for the past 12 years and has been a frequent con- tributor to Oregon Vegetable

Oregon vegetable digest ; Vol. 6 No. 3

Creator:: Oregon State University. Agricultural Experiment Station, Vaughan, Edward K., Cropsey, M. G., Morrison, H. E., Crowell, H. H., Baggett, James R., Davis, G. B., and Frazier, W. A.
Abstract:: Published July 1957. 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
Resource Type:: Other
Full Text:: Department of Botany and Plant Pathology. who conducted OO.ic studies on this disease in Oregon. it is

Resistance mechanisms against onion pink root (Pyrenochaeta terrestris), bioassay of inoculum potential in soil and chemical control

Creator:: Siemer, Sidney R.
Resource Type:: Dissertation
Full Text:: diluted with quartz sand and planted with Southport White Globe onion seed. Disease readings made

Oregon vegetable digest ; Vol. 10 No. 1

Creator:: Oregon State University. Agricultural Experiment Station, Frazier, W. A. (William Allen), 1908-, Mack, H. J. (Harry John), 1926-, Jackson, T. L. (Thomas Lloyd), 1922-, Vaughan, Edward K. (Edward Kemp), 1908-, and Crowell, H. H. (Hamblin Howes), 1913-
Abstract:: Published January 1961. 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
Resource Type:: Other
Full Text:: Oregon dis covered onion tops heavily infested with tiny maggots. A wilting and drooping of the tops

ScholarsArchive@OSU

A compound from onion roots inhibitory to Pyrenochaeta terrestris

The etiology of bacterial soft rot of onions and identification of the causal organisms

Development of vesicular-arbuscular mycorrhizae and pink root (Pyrenochaeta terrestris) in commercial onion fields in relation to nutrition, pH, and soil fumigation

The identification and quantification of Pyrenochaeta terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots

The genetic analyses of neck-rot (Botrytis allii Munn) resistance, pungency and soluble solids content of onion (Allium cepa L.)

The comparative value of formaldehyde and of various chemical dusts for the control of onion smut

Oregon vegetable digest ; Vol. 19 No. 2

Oregon vegetable digest ; Vol. 6 No. 3

Resistance mechanisms against onion pink root (Pyrenochaeta terrestris), bioassay of inoculum potential in soil and chemical control

Oregon vegetable digest ; Vol. 10 No. 1

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