Forest Pests: Insects, Diseases & Other Damage Agents

Anderson, R. L.; Mistretta, P. A. Management strategies for reducing losses caused by fusiform rust, annosus root rot, and littleleaf disease. Agric. Handb. 597. Washington, DC: U.S. Department of Agriculture, Forest Service, 1982. 30 p.

Management Options

Presented in this section is a flow chart (fig. 18), based on current stand conditions, designed to help managers select the tactics that best fit their specific management situations. By selecting the categories appropriate to a specific stand, readers will arrive at a set of letters (A through N). These letters refer to the specific management strategies presented in the Management Practices section, which follows the flow chart. The color coding of the letters indicates which pest is being dealt with and corresponds to the coding in the Management Practices section.

The suggested options are not meant to be stand prescriptions, but are designed to be used in conjunction with other pest and stand management data to develop the stand prescription. Managers are urged to modify the hazard-rating systems and options to tailor the system to their specific needs.

Fusiform Rust Expert System
Annosus Root Rot Expert System
Littleleaf Disease Expert System

Here is a sample problem, and its solution.

Problem: Manager is concerned about fusiform rust and annosus root rot in a 20-year old loblolly stand with adequate stocking located on a low-hazard annosus site.

Solution: By processing the stand through the flow chat (fig. 18), we select

1. Forest stands.
2. Young stands.
3. Adequate, disease-free stocking.
4. Low annosus hazard.

We arrive at letters G, H, J, &/or K for fusiform and normal management for annosus. By checking the Management Practices section, which follows, we find:

Fusiform rust

• G - Modify fertilization practices.
• H - Prune or excise fusiform galls and cankers.
• J - Consider prescribed burning.
• K - Remove the most severely affected trees during thinning operations.

Annosus root rot

• Normal management
• More detailed information is available in the Management Practices section for each pest.

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