Food production and crop yield Flashcards
What is the primary benefit of using greenhouses for plant growth?
They create ideal conditions that help and speed up photosynthesis.
How can adding lime to acidic soils benefit plants?
It helps keep the soil pH right for plant growth.
What role do greenhouses play in protecting plants?
They keep plants safe from pests and diseases.
What mechanism can farmers use to control water supply to crops?
The use of sprinklers.
What is the purpose of using artificial light in greenhouses?
To allow plants to photosynthesize for longer when sunlight is weak or gone.
What feature of greenhouses helps regulate temperature?
They trap the sun’s heat, and heaters may be used in winter.
What can be used to add moisture to the air in a greenhouse?
A humidifier.
What is the function of a blind in a greenhouse?
To lower light intensity on very bright days.
How can carbon dioxide be added to the air in a greenhouse?
Using a paraffin heater.
Which factors can be controlled to increase the rate of photosynthesis?
Carbon dioxide, temperature, and light intensity.
What minerals do plants need to grow effectively?
Nitrogen/nitrates, magnesium, potassium, and phosphorous.
What happens to plant growth when they lack essential minerals?
Their growth and life processes are affected, reducing yield.
What is the purpose of fertilizers in agriculture?
To replace missing minerals or add more to increase plant growth and crop yield.
What are pests in the context of agriculture?
Organisms that reduce the yield of crops or animals.
How do pests reduce crop or animal yield?
By damaging leaves, affecting photosynthesis, or harming animal health.
Or by affecting the appearance or quality of the crop so it can’t be sold or eaten.
