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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:: author is indebted to the Malheur Onion Growers Associa- tion and the Southwestern Idaho Onion Growers

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:: Root (Pytenochaeta terrestris) in Commercial Onion Fields in Relation to Nutrition, pH, and Soil

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:: terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots AN ABSTRACT OF THE

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:: Neck-rot (Botrytis allii) Resistance, Pungency and Soluble Solids Content of Onion (Allium cepa

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

The onion maggot

Creator:: Lovett, A. L. (Arthur Lester), 1885-1924 and Oregon Agricultural College. Experiment Station
Abstract:: Published April 1923. 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:: Technical Report
Full Text:: . These set onions start growing first and serve as flags to lure the onion maggot flies when they appear

Effects of field-curing practices, artificial drying, and other factors in the control of neck rot in stored onions

Creator:: Vaughan, Edward K. (Edward Kemp), 1908-, Cropsey, Myron George, 1910-, and Hoffman, E. N.
Abstract:: Published September 1964. 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:: Technical Report
Full Text:: three to four months of storage, each onion was examined and rated either healthy or rotted. In 1956 the

The onion maggot

Creator:: Oregon State College. Agricultural Experiment Station, Thompson, B. G. (Benjamin Garrison), 1891-, and Davis, John Emerson.
Abstract:: Published February 1943. 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:: Technical Report
Full Text:: seek the onions and tunnel within. The maggot stage within the onion varies from 15 days to five weeks

The onion maggot

Creator:: Oregon State College. Agricultural Experiment Station and Davis, John Emerson.
Abstract:: Published December 1940. 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:: Technical Report
Full Text:: serious insect pest of onions in Oregon. It is present everywhere in the state where onions are grown, and

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

The onion maggot

Effects of field-curing practices, artificial drying, and other factors in the control of neck rot in stored onions

The onion maggot

The onion maggot

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