Assessor Resource

AHCSDT411A
Perform a 1000 seed weight test

Assessment tool

Version 1.0
Issue Date: May 2024


This Unit applies to senior seed analysts working within enterprise guidelines. In general, they oversee the preparation of samples for testing; conduct and supervise specified tests in accordance with enterprise requirements; interpret and report results; maintain record-keeping systems; and have responsibility for overall laboratory operations, the supervision of staff, and implementation of quality assurance procedures.

This Unit covers determining the weight per 1000 pure seeds from a submitted sample.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Prerequisites

Nil.

Employability Skills

This Unit contains employability skills.



Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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

Evidence of the ability to:

prepare and weigh replicates

calculate variance, standard deviation and coefficient of variance

report results.

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.

Method of assessment

This Unit should be assessed together with core Units and other Units of Competency relevant to the function or work role.

Guidance information for assessment

To ensure consistency of performance, competency should be demonstrated on more than one occasion over a period of time in order to cover a variety of circumstances, cases and responsibilities, and where possible, over a number of assessment activities.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Required skills include:

Ability to:

prepare working samples

use mechanical dividers and counting machines

weigh seed samples

calculate variance, standard deviation and coefficient of variance

follow enterprise guidelines and standard operating procedures.

Required knowledge includes:

Knowledge of:

role of the International Seed Testing Association (ISTA) and the ISTA Rules for Seed Testing

concepts of metrology

seed biology

apparatus for weighing, counting and dividing seed samples

calculations such as variance, standard deviation and coefficient of variance

enterprise standard operating procedures (SOPs)

relevant health, safety and environment requirements.

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. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Pure seed may include:

seed as defined for a particular species under the International Rules for Seed Testing.

Seed used in the working sample may include:

the entire pure seed fraction of a purity analysis; or pure seed taken from a representative fraction of the submitted sample.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Pure seed is obtained following a purity analysis or as a representative fraction of a submitted sample. 
Mechanical dividers are used where appropriate. 
Moisture content of working sample is maintained through storage in moisture proof containers prior to counting. 
Labelling and records are completed. 
The entire working sample is put through a counting machine and the total number of seeds indicated is recorded. 
Working sample is weighed to the required number of decimal places. 
Eight replicates of 100 seeds are counted out randomly from the working sample. 
Each replicate is weighed to the required number of decimal places. 
Weights of each replicate are recorded. 
Variance, standard deviation and coefficient of variance are calculated according to enterprise guidelines. 
Where the coefficient of variance exceeds the prescribed value, a new set of replicates is tested. 
Where the coefficient of variance does not exceed the prescribed value, the average weight of 1000 seed is determined. 
Results of weight determination is reported under "other determinations" to the prescribed number of decimal places. 
The method used and the result as calculated is reported. 

Forms

Assessment Cover Sheet

AHCSDT411A - Perform a 1000 seed weight test
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

AHCSDT411A - Perform a 1000 seed weight test

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: