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Elements and Performance Criteria
Performance Evidence
Knowledge Evidence
An individual must be able to demonstrate the knowledge required to perform the tasks outlined in the elements and performance criteria of this unit. This includes knowledge of:
principles of consulting with clients and use and purpose of client brieflegislative and regulatory requirements regarding tree selection, including:environmental and ecological implicationsdeclared and other weed restrictionshazardous tree speciesassessing site characteristics for tree selection, including:functional life expectancy of tree and sitetree functionality for specified locationsappropriateness of tree selection characteristics for site aspect and dimensionseffect of site constraints on the tree selection process, including:verge widthaerial power and telecommunications linespotential to impede visual references (roads and driveways, signage, traffic lights)potential to impede traffic flow and structures (footpaths, roadways, building, infrastructure)use of research techniques from reference materials, including:plant taxonomic keyselectronic dataplant guidesbroad botanical concepts of tree selection for the following:ethnobotanytree morphologytree physiologytaxonomy and nomenclatureenvironmental conditions for the functional characteristics of the treebasic calculations for estimating planting area and root zone profileroot zone profile and characteristics as a determinant for tree selection, including:type of root zone profile (natural soil, soil mix or growing media)size and volume of root zone profile and proportion to the mature size of treesite hydrologyspecifying soils and growing media, including standards to applytesting and evaluating soils, soil mixes and growing media for physical and chemical properties and suitability for growing trees, including:identifying soils and soil typestesting for pH, electrical conductivity (EC), nutrientstesting for wettability, moisture holding capacity, drainage, organic matteramendments to improve soil, soil mix and growth mediagrowing media or soil selection and suitability for purposetree selection methodology using quality criteria of suitability for purpose, including:evaluation of trees common to a regiondocumenting and rationale for tree selectionselection of trees based on form and functionselection of trees for ecological and environmental purposesrecommendations of trees matching species and cultivars appropriately to the selection criteria transplanting issues for mature treesdocumenting tree specifications, including:quality standards for tree stocktree stock selection, type and size of plant, container or root balltree stock selection and growing media quality and specificationstree planting specificationsquality control and quality assurance, including:checking procedures for deliveries of plants and growing materials with the specificationshow to monitor quality and apply quality controlstree structural qualityrecording quality checks on delivered plants and productsimpact of Australian Standards AS2303, AS2223 and AS3743 on growing media and quality assurancedesign and construction of plant databases, including:field design for taxonomy and nomenclaturefield design for characteristics of treeentry of tree data reports and reporting procedures for identification, selection and specification process.