This is a bilingual publication (English and Spanish) for landscape workers and the public to help them protect Oregon birch trees from this damaging pest. Includes insect identification, host plants, signs and ...
Damage assessments after the historic heat wave of June 2021 in Oregon provided lessons for the state's Christmas tree growers. Those assessments showed how damage varied by type of tree and location of farms.
Pocket gophers girdle (remove bark from) the bases of conifer seedlings and saplings, causing significant economic losses. This publication will help you design a program to reduce or eliminate gopher damage to ...
David S. deCalesta, Kim Asman, Nancy Allen |
May 2003 |
Extension Catalog publicationPeer reviewed (Orange level)
Discusses three major types of madrone diseases--foliage, branch dieback and trunk canker, and root--and ways to minimize and manage. Discusses insect pests of madrone: fall webworm, western tent caterpillar, aphids, and leaf miners. Color photos. Sources of further information.
A study of the WeiSEL, manufactured by Zurn Harvesting of Germany, shows that the new plot combine yield measurement system is a less expensive and reliable alternative to manual yield collection methods.
Christina Hagerty, Duncan Kroese, Grayson Namdar, Larry Lutcher, Chuntao Yin |
Jun 2022 |
Extension Catalog publicationPeer reviewed (Orange level)
Gives basic facts about a serious plant disease called Sudden Oak Death, caused by the pathogen Phytophthora ramorum. Describes risk of disease to forest health and to commercial nursery industry. Shows disease ...
Discusses options for managing major insect pests and diseases of conifers in Oregon forests: bark beetles, wood borers, and ambrosia beetles; defoliators; aphids, adelgids, and scale insects; terminal and branch ...
Paul T. Oester, David C. Shaw, Gregory M. Filip |
Jan 2023 |
Extension Catalog publicationPeer reviewed (Orange level)