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Evidence Guide: AHCARB503A - Diagnose tree diseases

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

AHCARB503A - Diagnose tree diseases

What evidence can you provide to prove your understanding of each of the following citeria?

Assess environmental impact

  1. The tree is identified to the lowest taxonomic level, and its region of origin determined.
  2. The seasonal growth stages of the tree are determined.
  3. Any regular cultural practices are identified where appropriate.
  4. Characteristics of the growing environment that affect the growth of a specific tree species are determined.
  5. Environmental and cultural factors that predispose the tree to diseases are identified.
  6. Relevant physical and chemical properties of the soil or growing media are determined and assessed.
The tree is identified to the lowest taxonomic level, and its region of origin determined.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The seasonal growth stages of the tree are determined.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Any regular cultural practices are identified where appropriate.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Characteristics of the growing environment that affect the growth of a specific tree species are determined.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Environmental and cultural factors that predispose the tree to diseases are identified.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Relevant physical and chemical properties of the soil or growing media are determined and assessed.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify diseased trees

  1. Impact of disease type on tree parts and systems is determined.
  2. Natural defence systems of the trees against major disease types are considered.
  3. Disease groups are determined according to a disease classification guide.
  4. Signs and symptoms of disease are used to identify which trees are diseased.
Impact of disease type on tree parts and systems is determined.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Natural defence systems of the trees against major disease types are considered.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Disease groups are determined according to a disease classification guide.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Signs and symptoms of disease are used to identify which trees are diseased.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Diagnose tree disease

  1. Symptoms and signs of disease are recorded using accepted nomenclature.
  2. Samples and evidence are collated into a reference collection.
  3. Disease type is determined according a disease classification guide.
  4. Identification of macro biotic disease is determined to genus level.
  5. Specimens are prepared for microscopic examination of micro biotic diseases.
  6. Specialist services are determined and consulted in complex or indeterminate cases.
  7. Specimens are correctly collected, packaged and dispatched for specialist diagnosis or laboratory testing where required.
Symptoms and signs of disease are recorded using accepted nomenclature.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Samples and evidence are collated into a reference collection.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Disease type is determined according a disease classification guide.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identification of macro biotic disease is determined to genus level.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specimens are prepared for microscopic examination of micro biotic diseases.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specialist services are determined and consulted in complex or indeterminate cases.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specimens are correctly collected, packaged and dispatched for specialist diagnosis or laboratory testing where required.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Provide a prognosis

  1. The current health and energy reserves of the tree are determined.
  2. The severity and extent of the disease is assessed.
  3. The virulence of the disease on the specific host is researched.
  4. The phenology of the host and the disease are determined.
  5. Lag time of management options is researched and considered.
  6. Influences of environmental conditions on host, disease and management options are considered.
  7. An informed prognosis is provided in writing and verbally.
The current health and energy reserves of the tree are determined.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The severity and extent of the disease is assessed.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The virulence of the disease on the specific host is researched.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The phenology of the host and the disease are determined.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Lag time of management options is researched and considered.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Influences of environmental conditions on host, disease and management options are considered.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

An informed prognosis is provided in writing and verbally.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Develop, document and monitor the management program

  1. Management options are researched and appropriate options are recommended.
  2. A disease management program is developed within IPM guidelines.
  3. Tree diseases and management programs are recorded and documented in a report.
  4. Management plans are monitored and modified or refined as needed.
Management options are researched and appropriate options are recommended.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

A disease management program is developed within IPM guidelines.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Tree diseases and management programs are recorded and documented in a report.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Management plans are monitored and modified or refined as needed.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:

describe the growing requirements and characteristics of trees

determine the impact of the growing environment on the health of a tree

determine the mode of damage

diagnose and record tree diseases

formulate disease management program including the use of IPM

provide a reasoned prognosis

document a management program report

monitor and recommend changes to the management program.

Context of and specific resources for assessment

Competency requires the application of work practices under work conditions. Selection and use of resources for some worksites may differ due to the regional or enterprise circumstances.

Required Skills and Knowledge

Required skills

differentiate between biotic and abiotic symptoms in trees

research information about tree health problems, their diagnosis and remedial treatments available

identify signs and symptoms of tree health problems

determine possible causes of the problem

assess the severity, extent and speed of onset of the problem

determine the possible and probable physiological, anatomical, biochemical and physiological impact on the tree

document management programs for the diseases diagnosed

compile a disease reference collection

comply with legislative requirements

provide a reasoned prognosis

monitor diseases on an ongoing basis

use literacy skills to fulfil job roles as required by the organisation. The level of skill may range from reading and understanding documentation to completion of written reports

use oral communication skills/language competence to fulfil the job role as specified by the organisation including questioning, active listening, asking for clarification, negotiating solutions and responding to a range of views

use numeracy skills to estimate, calculate and record complex workplace measures

use interpersonal skills to work with others and relate to people from a range of cultural, social and religious backgrounds and with a range of physical and mental abilities.

Required knowledge

tree anatomy, biochemistry, physiology, histology, pathology and taxonomy

function of the anatomical parts of the tree, palm etc

the primary cellular and anatomical structures of the tree

the critical systems in the tree; physiologically, anatomically and biochemically

horticultural function, cultural and performance requirements and characteristics of the trees or other woody plants being considered

tree nutrition issues associated with the soil or media present

disease detection methods, taxonomic identification, life cycle stages and characteristic symptoms for the specific horticultural trees of the enterprise

patterns of host - disease interaction for each major disease type

chemical, cultural and biological control methods as parts of an IPM strategy

chemical use, toxicity and compatibility with target trees, soil, and environmental characteristics of the horticultural region.

Range Statement

The range statement relates to the unit of competency as a whole.

Trees may include:

all species of trees and woody tree like vegetation forms.

Disease may include;

both biotic and abiotic diseases and their mode of impact on trees, palms and woody monocotyledons along with a variety of management protocols.