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Filtering by: Advisor Roberts, Leilani A. Subject Pear -- Diseases and pests

Epidemiology of disease caused by Pseudomonas syringae as an epiphyte and its frequency, distribution, and characteristics as an endophyte of pear

Creator:

Whitesides, Steven K.

Abstract:

Conditions were established for inducing pear blossom blast caused by Pseudomonas syringae (Ps) on both attached and detached shoots. The incidence of disease was proportional to the log of Ps population under optimal temperature, moisture and bloom developmental stage. Highest incidence of infection followed occurrence of a major exotherm in...

Resource Type:

Dissertation

Full Text:

K. Whitesides and Robert A. Spotts Oregon St. Univ., Mid-Columbia Agric. Research and Extension
The disease cycle of side rot of pear, caused by Phialophora malorum

Creator:

Sugar, David

Abstract:

Potential sources of inoculum of Phialophora malorum were investigated. P. malorum was found to be a soil-borne fungus whose role as a postharvest pathogen of pear is dependent upon passive dispersal with infested soil. P. malorum survived in soil under a wide range of conditions, with greatest survival in cool,...

Resource Type:

Dissertation

Full Text:

, Caused by Phialophora malorum. Abstract approved: Redacted for privacy RObeit A. Sp5pes Potential