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Pear scab in Oregon

Creator:: Kienholz, J. R. (Jess Reuben), 1904- and Childs, Leroy, 1888-
Abstract:: The pear scab fungus (Venturia pyrina Aderh.) has been in Oregon for many years. It has become a serious economic problem in the main pear-growing districts since 1932. Of all diseases, scab causes the most consistent depreciation of Oregon's 6-million-box pear crop, although pear blight may be more spectacular during...
Resource Type:: Technical Report
Full Text:: -------------------------------------------------------------------------------- 31 Pear Scab in Oregon By J R. KH:NHOLZI and LT--,ROY CIIILDS° Introduction The pear scab fungus

Pear scab in Oregon : symptoms, disease cycle and management

Creator:: Spotts, Robert Allen, 1945-, Castagnoli, S., and Oregon State University. Extension Service
Abstract:: This publication gives a concise description of the causes, symptoms, and disease cycle of pear scab. It also describes the OSU-MCAREC three-part model to predict scab risk and help time fungicide sprays. Integrating nonchemical methods and fungicide applications optimized with the OSU-MCAREC model can result in production of high-quality pears...
Resource Type:: Technical Report
Full Text:: Scab in Oregon -- Symptoms, disease cycle and management Pear Scab in Oregon Symptoms, disease cycle

Chemical control : pear scab (Venturia pirina)

Creator:: Elkins, Rachel B. and Gubler, Doug
Resource Type:: Conference Proceeding
Full Text:: . Pear scab (Venturia pirina) Rachel B. Elkins U.C. Cooperative Extension Lakeport, CA Doug Gubler Dept

Demonstration of the Metos® Electronic Weather Station and Pest Forecasting System

Creator:: Green, Thomas A.
Resource Type:: Conference Proceeding
Full Text:: & sampling 1. Apple scab and fireblight, Apple and Pear Thomas A. Green Pest Management Supply Inc., P.O

Micropropagation of Pyrus rootstocks

Creator:: Yeo, Dennis
Abstract:: The availability of new pear rootstocks could be increased by development of an efficient micropropagation system. Many P. calleryana, P. betulifolia and P. communis rootstocks are resistant to many pear diseases and are graft compatible with leading cultivars. Explains of three potentially useful rootstock selections P. calleryana Decne 'OPR 157',...
Resource Type:: Masters Thesis
Full Text:: selected clones of Oregon Pear Rootstock (OPR), P. betulifolia and P. calleryana, and OH x F, P. communis

Evaporative cooling as an alternative in frost protection system of pears

Creator:: Oregon State University. Agricultural Experiment Station, Lombard, P. B. (Porter B.), Wolfe, John W. (John William), 1917-, and Collins, Margaret D.
Abstract:: Published January 1980. 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:: , to escape the danger of frost injury and to increase cropping, pear bloom in southern Oregon should

Pollination and commercial varieties of pears in oregon

Creator:: Stebbins, Robert L., Mellenthin, Walter M., 1920-, Lombard, P. B. (Porter B.), and Oregon State University. Extension Service
Abstract:: Why be concerned about pollination? While most varieties of pear will set some fruit without cross pollination, usually they will set more and better fruit with it. Cross pollination means the transfer of pollen from the anthers of flowers of one variety to the stigma of flowers of another.
Resource Type:: Technical Report
Full Text:: Pollination & Commercial Varieties of Pears in Oregon $1.00

The El Dorado pear in Oregon

Creator:: Oregon State University. Agricultural Experiment Station and Zielinski, Quentin Bliss, 1919-
Abstract:: Published March 1963. 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:: The El Dorado Pear In Oregon Circular of Inforination 618

Pears [1997]

Creator:: Hart, John M. (John Mervyn), 1947-, Righetti, Tim, Stevens, Bob, Stebbins, Bob, Lombard, Porter, Burkhart, David J., and Van Buskirk, Phil
Abstract:: Fruit tree fertilization is a standard grower practice intended to supplement soil-supplied nutrients. Both soil-applied fertilizers and nutrients stored within the tree are important. Tree reserves are the major source of nutrients for developing tissues before petal fall. Current-season growth and yield are influenced by nutritional status, which in turn...
Resource Type:: Technical Report
Full Text:: ://catalog.extension.oregonstate.edu Potassium (K) K deficiency occurs in some Oregon pear orchards. D not apply K unless leaf

Pear rootstocks for Oregon

Creator:: Oregon State University. Extension Service, Stebbins, Robert L., Westwood, M. N., Mellenthin, W. M., and Cordy, Clifford Bernard, 1906-
Abstract:: Published January 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:: - cline is closely related to rootstock. Although pear root- stock research continues in Oregon, the

ScholarsArchive@OSU

Pear scab in Oregon

Pear scab in Oregon : symptoms, disease cycle and management

Chemical control : pear scab (Venturia pirina)

Demonstration of the Metos® Electronic Weather Station and Pest Forecasting System

Micropropagation of Pyrus rootstocks

Evaporative cooling as an alternative in frost protection system of pears

Pollination and commercial varieties of pears in oregon

The El Dorado pear in Oregon

Pears [1997]

Pear rootstocks for Oregon

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