Published February 1918. 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
The present studies were conducted to better understand the
etiology, epidemiology and potential control of the Phytophthora
stem root rot as it occurs in apple stool beds.
Symptoms of Phytophthora root and stem rot occurred as early
as May and continued to develop throughout the growing season.
Sunken brown-black lesions...
Pesticides—including insecticides, acaricides, fungicides, and bactericides are essential for maintaining healthy crops with reliable yields and
quality. In many instances, pesticides have become less effective as target organisms have developed resistance. The first record of resistance dates to
1897, when orchardists began having problems controlling San Jose scale (Quadraspidiotus perniciosus...
Computer decision aids can help integrate and apply
diverse sources of information and expertise to problems of
integrated pest management (IPM) in agriculture and
forestry. AppleMgr combines a rule-based expert system with
databases and spreadsheets in a prototype decision aid
intended to be expanded and modified for use by extension...
Published February 1925. 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