Bacterial Canker
Planting trees that are budded or grafted about 32 inches above the root crown can help suppress bacterial canker infections. Bacterial canker tends to mostly affect weak trees, so any management practice that improves tree vigor (e.g., lighter, ... [... more]
University of California IPM |
Garden Questions and Answers
Garden questions and answers. Tomatoes, white flies, and bacterial canker on apricot trees. Q. My tomato plants are growing great guns, but are starting to spill over and spread across the ground. I know I should buy those wire tomato cages, but ... [... more]
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Scientific name: Chrysobothris mali
UC Management Guidelines for Pacific Flatheaded Borer on Prune. Pacific flatheaded borers are attracted to diseased or injured limbs, such as those affected by sunburn, scale insects, bacterial canker, mechanical injuries, or major pruning cuts. ... [... more]
University of California IPM |
Management Decisions
Symptoms are most obvious in spring, and include limb dieback with rough cankers and amber colored gum. There may also be leaf spot and blast of young flowers and shoots. The sour sap phase of bacterial canker may not show gum and cankers, but ... [... more]
University of California IPM |
Ring nematode: Mesocriconema (Criconemella) xenoplax
UC Management Guidelines for Nematodes on Prune. Ring nematodes spend their lives in soil feeding on roots. Feeding by ring nematodes stresses trees and makes them susceptible to bacterial canker (Pseudomonas syringae). Dagger nematodes reduce ... [... more]
University of California IPM |
Root lesion nematode: Pratylenchus vulnus
UC Management Guidelines for Nematodes on Plum. Resistant rootstocks Ring nematodes spend their lives in soil feeding on roots. Feeding by ring nematodes, particularly on small feeder roots, predisposes trees to bacterial canker (Pseudomonas ... [... more]
University of California IPM |
Pathogen: Clavibacter michiganensis pv. michiganensis
There are usually no symptoms of bacterial canker on seedlings; however, on young plants symptoms consist of poor growth and temporary wilting of branches. Lower leaves yellow and shrivel, but symptoms may not show until flowering. On mature ... [... more]
University of California IPM |
Bacterial Canker
Symptoms are most obvious in spring and include limb dieback with rough cankers and amber-colored gum. There may also be leaf spot or blast of flowers and young shoots. The sour sap phase of decline may not show gum and cankers, but the inner ... [... more]
University of California IPM |
Bacterial Canker
UC Management Guidelines for Bacterial Canker on Peach. Problems with bacterial canker can be minimized at planting by carefully selecting the planting site, choosing the least susceptible rootstocks, and following recommended cultural practices ... [... more]
University of California IPM |
Bacterial Canker
Symptoms are most obvious in spring, and include limb die back with rough cankers and amber colored gum. There may also be leaf spot and blast of young flowers and shoots. The sour sap phase of bacterial canker may not show gum and cankers, but ... [... more]
University of California IPM |
Bacterial Canker
UC Management Guidelines for Bacterial Canker on Nectarine. Problems with bacterial canker can be minimized at planting by carefully selecting the planting site, choosing the least susceptible rootstocks, and following recommended cultural ... [... more]
University of California IPM |
Bacterial Canker
The pathogen that causes bacterial canker is commonly present on the surfaces of many plants. Consequently, management of this disease should focus on preventing conditions that predispose trees to the disease. Before planting, properly sub-soil ... [... more]
University of California IPM |
