Unit 4: Agriculture - Agricultural Energetics
- Created by: rosieevie
- Created on: 18-05-15 19:47
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- Agricultural Energetics
- Intensive Agriculture - high yields achieved using large inputs
- Artificial fertilisers, pesticides
- High energy subsidy via fossil fuels
- Little nutrient recycling
- Highly mechanised
- High density animal husbandry
- Less sustainable
- Extensive Agriculture - yield is achieved by distributing inputs over large areas (inputs usually low)
- Would produce a greater overall yield if enough suitable land was available
- Opposite of intensive agriculture
- Can still have environmental impacts due to large land use
- Inputs - labour, money, fuel and fertiliser
- Productivity = yield/unit area
- Efficiency = yield/unit input
- Energy ratio = energy removed/ energy put in
- Intensive Agriculture - high yields achieved using large inputs
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