Limiting factors. How can this issue be addressed?
Optimal conditions e.g. carbon dioxide concentration, amount of water and the temperature.
2 of 17
Organisms feeding on plants. Solution?
Use pesticides to eliminate pests feeding on plants.
3 of 17
Light levels (limiting photosynthesis) solution?
Use light banks or plant earlier for a longer growing season.
4 of 17
Limited water. Solution?
Use irrigation systems or grow drought resistant varieties of plants.
5 of 17
Low temperature. Solution?
Use greenhouses or plant earlier in the year for a longer growing season to minimise impact of temperature.
6 of 17
Lack of nutrients. Solution?
Use nitrogen-fixing varieties of plants e.g. beans, peas clover to replenish nitrate levels. Or use crop rotation methods to avoid depletion of certain nutrients.
7 of 17
Competition. Solution?
Use herbicides to combat weeds.
8 of 17
Fungal disease. Action?
Use fungicides or fungicide resistant varieties.
9 of 17
Methods for improving secondary productivity:
Why it works/potential objections:
10 of 17
Using antibiotics.
To stop diseases from spreading from one animal to another. BUT could get into food chain and cause mutations.
11 of 17
Minimal space for movement
Minimises energy lost through movement. BUT, animal welfare/cruelty.
12 of 17
Harvest animals young before adulthood
Young put a lot of energy into growth and minimises loss of energy. BUT issues with animal welfare as doesn't allow sufficient life span.
13 of 17
Use of steroids
Encourages rapid growth and increasing proportion of energy for growth. BUT issues in food produce and animal welfare. Outlawed in EU.
14 of 17
Selective breeding
Select favourable traits e.g. higher milk/egg/growth production. BUT limits genetic diversity.
15 of 17
Constant temperature (internal housing)
Avoids unnecessary use of energy to keep warm.
16 of 17
Supplying perfectly balanced food mix.
Avoid unnecessary use of energy required to source food. Maximises growth potential with a perfectly balanced diet.
17 of 17
Other cards in this set
Card 2
Front
Optimal conditions e.g. carbon dioxide concentration, amount of water and the temperature.
Back
Limiting factors. How can this issue be addressed?
Card 3
Front
Use pesticides to eliminate pests feeding on plants.
Back
Card 4
Front
Use light banks or plant earlier for a longer growing season.
Back
Card 5
Front
Use irrigation systems or grow drought resistant varieties of plants.
Comments
No comments have yet been made