NZQA Expiring unit standard
1668 version 8
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Title
Demonstrate knowledge of common amenity plant pests, diseases,
and disorders
Level
3
Credits
8
Purpose
This unit standard is for people working, or intending to work in
amenity horticulture. People credited with this unit standard
are able to identify the main types, and give common examples
of amenity plant pests, diseases, and disorders; and describe
the principles of prevention and control of amenity plant pests,
diseases, and disorders.
Classification
Horticulture > Amenity Horticulture
Available grade
Achieved
Explanatory notes
Legislation relevant to this unit standard includes but is not limited to the Hazardous
Substances and New Organisms Act 1996, and subsequent amendments.
Outcomes and evidence requirements
Outcome 1
Identify the main types, and give common examples of amenity plant pests, diseases, and
disorders.
Evidence requirements
1.1
Pest damage signs and symptoms are recognised in terms of four pests with
chewing mouthparts, four pests with sap-sucking mouthparts, and two pests
with rasping mouthparts.
1.2
Signs and symptoms of fungal pathogens are recognised in terms of their
effects on plant growth.
Range
1.3
five of – botrytis (grey mould), downy mildew, leaf (black) spots,
powdery mildew, rusts, sclerotinia, phytophthora.
Examples of fungal disease are recognised on amenity plants and given their
accepted common names.
Range
five of – botrytis (grey mould), downy mildew, leaf (black) spots,
powdery mildew, rusts, sclerotinia, phytophthora.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
1.4
Symptoms of bacterial damage are recognised in terms of their effects on
amenity plants.
Range
1.5
leaf blotches, leaf distortions, lesions, root knots.
Viral disease symptoms are recognised in terms of their effects on plant growth.
Range
1.7
cankers, galls, fireblight.
Nematode damage is recognised in terms of its effects on plant growth.
Range
1.6
1668 version 8
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stunting, distortion, leaf bunching, mosaic mottling, chlorotic
patterns, leaf and flower streaking, vein clearings, ring spot.
Physiological disorder symptoms are recognised in terms of their effects on
amenity plants.
Range
leaf scorch, distortion, discolouring, stunting, hormone damage,
senescence, frost damage.
Outcome 2
Describe the principles of prevention and control of amenity plant pests, diseases, and
disorders.
Evidence requirements
2.1
Pest and pathogen life cycles are outlined in terms of control opportunities.
Range
pests – four pests with chewing mouthparts, four pests with sapsucking mouthparts, and two pests with rasping mouthparts;
fungal pathogens – powdery mildew, downy mildew, black spots,
rusts, phytophthora;
bacterial pathogens – cankers, galls, fireblight;
nematodes.
2.2
The relationships between disease pathogen, host, and environmental
conditions are explained in terms of control opportunities.
2.3
Pest, disease, and disorder control measures are outlined in terms of cultural
options.
Range
2.4
mechanical, screens/barriers, temperature, humidity, and
ventilation control, watering methods.
Pest and disease control measures are outlined in terms of biological and
integrated pest management options.
Range
biological options may include – predators, parasites, pathogens;
integrated pest management options may include – regulatory,
biological, genetic, cultural, physical, and chemical.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
2.5
1668 version 8
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Pest and disease control measures are outlined in terms of agrichemical
options.
Range
insecticides, nematicides, miticides, fungicides, bactericides;
translocated, contact, fumigant, stomach poison.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
28 January 1995
31 December 2013
Review
2
28 November 1997
31 December 2013
Revision
3
19 July 2001
31 December 2013
Revision
4
24 February 2006
31 December 2013
Review
5
20 June 2008
31 December 2015
Review
6
18 August 2011
31 December 2015
Rollover
7
17 October 2013
31 December 2015
Rollover
8
17 September 2015
31 December 2019
Consent and Moderation Requirements (CMR) reference
0032
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016