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Title / Demonstrate understanding of greenhouse environmental management and CO2 enrichment of greenhouses
Level / 5 / Credits / 5
Purpose / This unit standard is for people working in the horticulture industry.
People credited with the unit standard are able to demonstrate understanding of greenhouse environmental management and CO2 enrichment of greenhouses.
Classification / HorticultureProduction Horticulture
Available grade / Achieved
Explanatory notes
1Evidence requirements must be consistent with all relevant legislationand subsequent amendments; this includes but is not limited to:
- Health and Safety at Work Act 2015.
2Definitions
Geometry refers to the way of getting CO2into the glasshouse.
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 learners’ understanding is embedded in their practices and behaviour.
3Crop may include – any commercial horticulture crop from the following sectors: fruit, vegetable, floriculture and nursery.
Outcomes and evidence requirements
Outcome 1
Demonstrate understanding of greenhouse environmental management.
Evidence requirements
1.1Describe techniques used to manipulate the indoor environment,and outcomes expected in terms of crop health and growth.
Rangethree examples for each of – temperature manipulation; daylight manipulation.
1.2Describe the operating principles and benefits of control systems used to influence crop growth and yield within the indoor environment.
Rangetwo examples for each of – heating, cooling, fans, screens, climate control systems, fogging, venting, diffused light systems.
Outcome 2
Demonstrate understanding CO2 enrichment of greenhouses.
Evidence requirements
2.1Describe greenhouse CO2 enrichment targets and strategies.
2.2Describe the benefits and costs of CO2 enrichment for a crop.
2.3Describe geometry and equipment required to correctly enrich a greenhouse with carbon dioxide for maximum crop growth and quality.
2.4Evaluate enrichment technology options.
Planned review date / 31 December 2022Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for AssessmentRegistration / 1 / 16 February 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 (CMRs). 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 you wish to suggest changes to the content of this unit standard.
Primary Industry Training OrganisationSSB Code 101558 / New Zealand Qualifications Authority 2018