AS 91290 · 4 credits · External
Environmental factors
Demonstrate understanding of techniques used to modify physical factors of the environment for NZ plant production
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In plain EnglishAI study guide · check the NZQA standard
This standard asks you to show you understand how farmers and growers use different techniques to change the environment around their plants so they grow better for commercial production in New Zealand. You need to explain what these techniques are, how they work, and what effect they have on things like crop yield, quality, and harvest timing.
What to do, grades and common mistakes
What you actually do
- ·Choose a real commercial crop or horticultural product grown in New Zealand and describe specific management practices used to grow it
- ·Identify and name the physical factors being modified (such as frost, wind, light, temperature, water, humidity, air, or soil)
- ·Explain how the management practice actually changes that physical factor and what happens as a result
- ·Link the changes to plant processes and growth outcomes—for example, how more light affects ripening or how controlling water impacts plant quality and yield
- ·At higher grades, evaluate whether the technique is worth using by weighing up its economic, environmental, or social benefits and drawbacks
AAchieved
You describe a management practice used in your chosen NZ crop, name the physical factor it modifies, explain how it's done, and make a clear link to how it affects plant growth or quality.
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