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Evidence Guide: AHCIRG426 - Evaluate water supply for irrigation

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

 

AHCIRG426 - Evaluate water supply for irrigation

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

Determine water needs for irrigation

  1. Determine the water needs of plants to be irrigated
  2. Calculate the permeability of the soil and deep drainage losses
  3. Calculate evapotranspiration rates through the growing season
  4. Calculate soil water deficits throughout the season based on expected rainfall
  5. Calculate the amount of irrigation water required through the growing season
Determine the water needs of plants to be irrigated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate the permeability of the soil and deep drainage losses

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate evapotranspiration rates through the growing season

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate soil water deficits throughout the season based on expected rainfall

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate the amount of irrigation water required through the growing season

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess a water source for water quality

  1. Test water source for electrical conductivity and analyse results
  2. Test water source for ionic composition and analyse results
  3. Test water source for biological composition and analyse results
Test water source for electrical conductivity and analyse results

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test water source for ionic composition and analyse results

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test water source for biological composition and analyse results

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine cost and availability of alternative water sources

  1. Evaluate water availability and access requirements for water sources
  2. Cost capital expenditure requirements
  3. Cost operating expenditure requirements
  4. Investigate regulatory requirements for purchasing irrigation water and incorporate into business planning
Evaluate water availability and access requirements for water sources

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Cost capital expenditure requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Cost operating expenditure requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Investigate regulatory requirements for purchasing irrigation water and incorporate into business planning

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete water sourcing or acquisition arrangements

  1. Make contractual arrangements for purchase or sourcing of water
  2. Plan for short term purchasing or selling of water depending on seasonal conditions if necessary
Make contractual arrangements for purchase or sourcing of water

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Plan for short term purchasing or selling of water depending on seasonal conditions if necessary

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Determine water needs for irrigation

1.1 Determine the water needs of plants to be irrigated

1.2 Calculate the permeability of the soil and deep drainage losses

1.3 Calculate evapotranspiration rates through the growing season

1.4 Calculate soil water deficits throughout the season based on expected rainfall

1.5 Calculate the amount of irrigation water required through the growing season

2. Assess a water source for water quality

2.1 Test water source for electrical conductivity and analyse results

2.2 Test water source for ionic composition and analyse results

2.3 Test water source for biological composition and analyse results

3. Determine cost and availability of alternative water sources

3.1 Evaluate water availability and access requirements for water sources

3.2 Cost capital expenditure requirements

3.3 Cost operating expenditure requirements

3.4 Investigate regulatory requirements for purchasing irrigation water and incorporate into business planning

4. Complete water sourcing or acquisition arrangements

4.1 Make contractual arrangements for purchase or sourcing of water

4.2 Plan for short term purchasing or selling of water depending on seasonal conditions if necessary

Required Skills and Knowledge

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Determine water needs for irrigation

1.1 Determine the water needs of plants to be irrigated

1.2 Calculate the permeability of the soil and deep drainage losses

1.3 Calculate evapotranspiration rates through the growing season

1.4 Calculate soil water deficits throughout the season based on expected rainfall

1.5 Calculate the amount of irrigation water required through the growing season

2. Assess a water source for water quality

2.1 Test water source for electrical conductivity and analyse results

2.2 Test water source for ionic composition and analyse results

2.3 Test water source for biological composition and analyse results

3. Determine cost and availability of alternative water sources

3.1 Evaluate water availability and access requirements for water sources

3.2 Cost capital expenditure requirements

3.3 Cost operating expenditure requirements

3.4 Investigate regulatory requirements for purchasing irrigation water and incorporate into business planning

4. Complete water sourcing or acquisition arrangements

4.1 Make contractual arrangements for purchase or sourcing of water

4.2 Plan for short term purchasing or selling of water depending on seasonal conditions if necessary

The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.

The candidate must provide evidence that they can:

analyse results for electrical conductivity and ionic composition of irrigation water

apply principles of hydraulics to the selection of irrigation systems, legal access and structures

calculate capital and operating expenditure for a water supply system

calculate water losses in an irrigation system

compare costs for different water sources

estimate the irrigation requirements of plants

take water samples

The candidate must demonstrate knowledge of:

capital and operating expenditure calculations to source water

climatic factors in irrigation development, rainfall, evaporation, evapotranspiration and hydrology

conveyance and disposal of drained effluent

cost benefit analysis

efficiency of irrigation systems and long-term viability

environmental and energy-use implications of resource utilisation and development

irrigation drainage, seepage, surface and subsurface drainage systems

irrigation scheduling, soil moisture measurement

management planning and operation of water allocations

operations and maintenance requirements

plant physiology and plant water use, transpiration crop water requirements in terms of water quality and quantity

plant water requirements in terms of water quality and frequency of supply

re-use systems, management of irrigation systems

salinity and ionic composition impacts on soil structure and plant growth

selection of irrigation systems

soils and water, soil moisture retention and movement, plant root zones and development, infiltration and leaching

types of irrigation systems

water legislation

water supply potential for the development of irrigation systems

Range Statement