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Title / Demonstrate understanding of the functions of greenhouse environmental control methods for optimising plant growth
Level / 3 / Credits / 6
Purpose / This unit standard is for people workingunder limited supervision with responsibility for their work routines,in a production horticulture context.
People credited with this unit standard are able todemonstrate understanding of how greenhouse environmental control methods are used to optimise plant growth in the workplace.
Classification / Horticulture > Production Horticulture
Available grade / Achieved
Explanatory notes
1In the context of this unit standard, understanding means that there should be evidence of a learner’s thorough comprehension of a topic. A learner with a good understanding of a topic should have applied, or should be able to apply what they have learnt to a workplace situation and will be able to alter their practices to the different contexts they are applying their learning to. Assessors should be confident that the learner’s understanding is embedded in their practices and behaviour.
2Examples of environmental controls used in the greenhouse may include – manual vents, automatic vents, automatic misting equipment, irrigation system, fans and humidifiers, heaters, thermometers, heated beds, carbon dioxide enrichment equipment, whitewash on sheathing, sliding covers, supplementary lighting.
Outcomes and evidence requirements
Outcome 1
Demonstrate understanding ofthe functions ofgreenhouse environmental control methodsfor optimising plant growth.
Evidence requirements
1.1Describe methods of controlling cooling.
1.2Describe methods of controlling the heating or retaining heat.
1.3Describe equipment and methods used to increase carbon dioxide levels.
1.4Describe equipment and methods used tomodifying the humidity.
1.5Describe equipment and methods used to modify day length.
1.6Describe equipment and methods used to irrigate plants.
1.7Describe equipment and methods used to control light levels.
Replacement information / This unit standard replaced unit standard 794.Planned review date / 31 December 2021
Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for AssessmentRegistration / 1 / 19 January 2017 / N/A
Consent and Moderation Requirements (CMR) reference / 0052
This CMR can be accessed at
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.
Comments on this unit standard
Please contact the Primary Industry Training you wish to suggest changes to the content of this unit standard.
Primary Industry Training OrganisationSSB Code 101558 / New Zealand Qualifications Authority 2018