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Certain investigations pertaining to pear decline in Oregon

Creator:: Hartman, Henry, 1889- and Oregon State University. Agricultural Experiment Station
Abstract:: Published December 1962. 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:: Oregon and elsewhere will ultimately enable the pear industry to live with the true decline problem

Stony pit of pear in Oregon

Creator:: Milbrath, John A., 1909-
Abstract:: Published June 1966. 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:: Oregon State University. Stony Pit of Pear in Oregon History of Stony Pit Kienholz (7) named and

Bionomics and control of the two-spotted spider mite on pear in southern Oregon

Creator:: Westigard, Peter H., Lombard, P. B. (Porter B.), and Berry, Donald W.
Abstract:: Published November 1967. 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 and costly acarine pest of pear in the area (28). The economic importance of this spider mite as

Isolation, purification and other studies of viruses mechanically transmitted from pear

Creator:: Nemec, Stanley, Jr.
Abstract:: Knowledge of the viruses which are mechanically transmitted from pear to herbaceous plants and the diseases they cause in pear is not complete. This thesis discusses the means used to mechanically transmit pear viruses, the properties of those viruses and their relationships with latent viruses of apple. Herbaceous plant virus...
Resource Type:: Dissertation
Full Text:: - mitted from apple and attempt to infect pear with the mechanically transmitted viruses. Oregon ranks

Pear decline

Creator:: Westwood, Melvin N. (Melvin Neil), 1923- and Oregon State University. Extension Service
Abstract:: Published August 1962. 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

The relationship of phloem graft union responses to pear decline

Creator:: Ostrowski, Richard Carl
Abstract:: Since 1948, pear decline has been responsible for the devitalization and death of many pear trees in the Pacific Coast states and British Columbia. Use of anatomical abnormalities of the graft union as a diagnostic technique to separate pear decline from other disorders exhibiting similar symptoms was evaluated. Modifications in...
Resource Type:: Dissertation

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

Creator:: Jorgensen, Clive Darrel
Abstract:: The ecological interrelationships of mites occurring in and near the Hood River Valley, Oregon, pome fruit orchards were investigated to determine the possibility of an integrated control program using the species already present. Survey sampling methods were used to study mites on wild hosts (Crataegus douglasii Lindl., Crataegus columbiana Howell,...
Resource Type:: Dissertation
Full Text:: .) related to pome fruits, abandoned and commercial apple and pear orchards, and soil with its cover in

Blossom-end rot of tomatoes [1968]

Creator:: Oregon State University. Extension Service, Duncan, Andrew A., and MacSwan, Iain C.
Abstract:: Published March 1968. 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:: , Extension Vegetable Production Specialist, and lAIN C. MACSWAN, Extension Plant Pathologist Oregon State

Coniothyrium rose canker in Oregon

Creator:: Intrama, Siriphong
Abstract:: An isolate of Coniothyrium obtained from a stem canker on Nocturne rose from the Botany Department Farm, Corvallis, Oregon was studied with respect to morphological and cultural characters, pathogenicity and mineral nutrition. The hyphae of the isolate were smooth, septate and branched. The hyphal cells averaged 16.37 X 3.52 microns....
Resource Type:: Dissertation

Spray schedule for diseases and insects of cane fruits

Creator:: Oregon State University. Cooperative Extension Service, Every, R. W., and MacSwan, Iain C.
Abstract:: Published May 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:: and improves quality of cane fruits. Oregon cane fruits are subject to insect and disease damage

ScholarsArchive@OSU

Certain investigations pertaining to pear decline in Oregon

Stony pit of pear in Oregon

Bionomics and control of the two-spotted spider mite on pear in southern Oregon

Isolation, purification and other studies of viruses mechanically transmitted from pear

Pear decline

The relationship of phloem graft union responses to pear decline

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

Blossom-end rot of tomatoes [1968]

Coniothyrium rose canker in Oregon

Spray schedule for diseases and insects of cane fruits

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