Bacterial pod rot is caused by the bacterium Pseudomonas syringae pv. maculicola. Little is known about the disease or its life cycle, but presumably the pathogen gains entry into plants through natural openings and wounds. Like most diseases caused by P. syringae, splashing water, equipment, and aerosols probably disseminate the bacterium.
Bacterial pod rot symptoms appear as water-soaked lesions on pods that become necrotic (dead) and dry with time. The disease appears to be of little concern.
No biological control strategies have been developed for bacterial pod rot.
No cultural controls have been reported for bacterial pod rot. However, management strategies common for other diseases caused by P. syringae include crop rotation to non-hosts, thorough incorporation of plant debris, weed control in and around fields, and furrow irrigation from pathogen-free sources of water such as wells.
Copper bactericides may provide some bacterial pod rot suppression if applied preventatively and regularly.
Product List for Bacterial Pod Rot:
Pesticide |
Rate per Acre |
Application Frequency |
Remarks |
Copper fungicides: not all formulations listed |
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Champ DP |
0.33-0.66 lb |
7 days |
|
|
Cuprofix Disperss |
1.5-2.5 lb |
7-10 days |
Can cause phytotoxicity |
|
Kocide 2000 |
0.75-1.5 lbs |
7-10 days |
|
|
Nordox |
1.0-3.0 lb |
7-10 days |
|
|
Nu Cop 50 WP |
1.5-2.0 lb |
7-10 days |
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The information herein is supplied with the understanding that no discrimination is intended and that listing of commercial products, necessary to this guide, implies no endorsement by the authors or the Extension Services of Nebraska, Colorado, Wyoming or Montana. Criticism of products or equipment not listed is neither implied nor intended. Due to constantly changing labels, laws and regulations, the Extension Services can assume no liability for the suggested use of chemicals contained herein. Pesticides must be applied legally complying with all label directions and precautions on the pesticide container and any supplemental labeling and rules of state and federal pesticide regulatory agencies. State rules and regulations and special pesticide use allowances may vary from state to state: contact your State Department of Agriculture for the rules, regulations and allowances applicable in your state and locality. |
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Categories: Canola and Mustard, Disease, Bacterial Pod Rot
Date: 12/30/04