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The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the Performance Criteria, is detailed below. Add any essential operating conditions that may be present with training and assessment depending on the work situation, needs if the candidate, accessibility of the item, and local industry and regional contexts. |
Soil properties may include: | surface soilsubsoilsoil profilesa, b & c horizonstexture:rock/gravelsandsiltclaysoil structureaggregatesmineralsporessoil colour. |
Soil sampling may include: | selection of sample site/s using methods such as:gridrandomzigzagtransectcollection of samples from:field pitsauger holesconsistent application of sampling procedures as identified by the Department of Agriculture maintenance of the integrity of the sample according to applicable statutory guidelines (Department of Agriculture, EPA). |
Soil testing may include: | soil pHsoil texture assessmentmottle coloursoil nutrientsnitrogenphosphorus (Olsen P or Colwell P)potassiumfertiliser requirementscation exchange capacity (CEC)exchangeable sodium percentage (ESP)calcium/magnesium ratioorganic matter hydraulic conductivityconsistence (dry only)strengthstickinessplasticityEmerson dispersion grade. |
Water holding capacity may include: | hydraulic conductivity soil water potentialinfiltration/leaching ratesfield capacity determination. |
Reclaimed water quality parameters may include: | pHBOD/CODtotal salt concentrationtotal Dissolved Solids (TDS)soluble salts by electrical conductivity (EC)nutrients - N, P, Kanions and cationssodium adsorption ratio (SAR)adjusted SAR. |
Irrigation systems may include: | border check flood irrigationgraded or contour furrowssub-surface irrigationsprinklerslocalised systems, such as:dripmicro spraytrickle. |
Equipment may include: | electronic monitoring and metering systemsreclaimed water flow distribution systems, including:pipesvalvespumpschannelschecksdrainscollection damsflow control gates pressured distribution equipment, such as:sprinklerstravelling irrigators sampling and testing equipmentinfiltration testing equipmentmanual chart recording systemson- and off-road vehiclescommunication equipmentatmosphere monitoring equipmentpersonal protective equipmentcommunication equipmentcomputerised equipment. |
Irrigation scheduling options may include: | measurement of soil moisture content on-site, physical soil moisture investigationsevaporation minus rainfall calculationstensiometersgypsum blocksneutron probescapacitance probes. |
Water budgets may include: | weather detailsrainfallevaporationcrop factors and predicted plant water requirementleaching requirementssoil types and characteristicsmonthly/yearly calculation of reclaimed water requiredcalculation of suitable land areas for use. |
Organisational requirements may include: | organisational policies and proceduresoccupational health and safetyelectrical and mechanical procedures. |
Statutory requirements may include: | environmental legislation, including relevant:Federal legislationState/Territory legislationslocal government by-lawsgovernment or quasi-government policies and regulationscommunity planning and development agreements, such as land care agreementsWater Actslicensing and/or drainage agreements plumbing and drainage standardshazardous substancesWorld Health Organisation standardsNHMRC guidelines. |
Irrigation management options may include: | shandying to reduce salt or nutrient loadsmanaging algal outbreaksidentification and reduction of odours from irrigationrestricting livestock or public access due to water quality issuessuspension of irrigation. |
Soil ameliorants may include: | gypsum (calcium sulphate) hydrated lime (limil)agricultural lime (calcium carbonate)biosolids. |
Reports may include: | reclaimed water irrigation data including:applications dates and volumes appliedvolumes of run-offwater qualityrainfall, evaporation and/or other meteorological datawater budgetssalt budgetsplant performance data. |