Elements and Performance Criteria
- Assess environmental impact
- The tree is identified to the lowest taxonomic level, and its region of origin determined.
- The seasonal growth stages of the tree are determined.
- Any regular cultural practices are identified where appropriate.
- Characteristics of the growing environment that affect the growth of a specific tree species are determined.
- Environmental and cultural factors that predispose the tree to diseases are identified.
- Relevant physical and chemical properties of the soil or growing media are determined and assessed.
- Identify diseased trees
- Diagnose tree disease
- Symptoms and signs of disease are recorded using accepted nomenclature.
- Samples and evidence are collated into a reference collection.
- Disease type is determined according a disease classification guide.
- Identification of macro biotic disease is determined to genus level.
- Specimens are prepared for microscopic examination of micro biotic diseases.
- Specialist services are determined and consulted in complex or indeterminate cases.
- Specimens are correctly collected, packaged and dispatched for specialist diagnosis or laboratory testing where required.
- Provide a prognosis
- The current health and energy reserves of the tree are determined.
- The severity and extent of the disease is assessed.
- The virulence of the disease on the specific host is researched.
- The phenology of the host and the disease are determined.
- Lag time of management options is researched and considered.
- Influences of environmental conditions on host, disease and management options are considered.
- An informed prognosis is provided in writing and verbally.
- Develop, document and monitor the management program