- Protect the crops from the environment
- Temperature
- Water levels
- Fertilisers
- Carbon Dioxide levels
- all controlled to maximise yield
5.2 Effects of increased CO2 and temperature
- Temperature
- Increase rate of metabolic reactions
- Too much heat can effect growth in a negative way
- CO2 Levels
- Increase rate of photosynthesis
- Therefore increasing the growth
5.3 Fertilisers --> To increase crop yield
- To return nitrates and other minerals to the soil
- Nitrogen is used to make proteins, nucleic acids and chlorophyll
- To give the plants nutrients they need in order to grow
5.4 Pest control --> Pesticides and Biological control
- Advantages to pesticides
- Doesn't harm humans
- Only pests harmed
- Helps keep a strong yield
- All crops are capable
- Easy to apply
- Disadvantages to Pesticides
- Expensive
- Pest can become resistant
- Environmental damage
- Can kill pollinating insects
- Can wipe out a food chain
- Advantages to biological control
- Not 100% effective
- No poison involved
- Almost all crops effected
- Disadvantages to biological control
- Difficult to apply
- Expensive
- Not suitable for all crops
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