Food and Agriculture Flashcards
What are Agriculture’s challenges?
- feed everyone (produce enough food, distribute food equitably)
- maintain ecosystems
- provide livelihoods
- support culture and identity
What are the two major forms of food production?
- intensive agriculture
(large-scale production, high inputs, low human labour) - alternative agriculture
(smaller-scale prod, low inputs, high human labour)
What do we mean by agricultural inputs?
- synthetic fertilizers, pesticides
- machinery
- modified (“improved”) seeds
What do we mean by agricultural labour?
- clearing land, tilling, planting, weeding, harvesting
- may be performed by humans, animals and/or machinery
What are the features of intensive agriculture?
- monoculture (one crop at a time)
- highly mechanized
- high use of fertilizers, pesticides, modified seeds
- heavily reliant on fossil fuels
What are the drivers of intensive agriculture?
- economies of scale
- consolidation of agri-business
- north america, europe: policy incenties
- global South: export based economies
What are the intensive strategies to increase yields in agriculture?
- synthetic fertilizer
- mechanization
- irrigation
- specialization
- pesticides
- hybrid plant varieties
What is synthetic fertilizer?
- provides nitrogen, phosphorus, potassium
- made from ammonium nitrate (NH3)
- producing fertilizer is energy intensive
why is producing fertilizer energy intensive?
natural gas (methane) used as both an ingredient and a fuel
What is the “Green Revolution”?
- effort to increase agricultural yields in Asia, Latin America starting in 1960s
- technologies imported from US
- Yields were seen as a measure of progress
What were the green revolution methods?
- synthetic fertilizer
- mechanization
- irrigation
- monoculture
- pesticides
- transgenic seeds
What is the challenge of food distribution?
- 733M ppl facing hunger
- 3 billion+ cannot afford healthy diet
- amt of food wasted could feed 2 billion ppl per year
- obesity continues to increase
What are they key factors on unequal distribution?
- Threats to food security
(availability and affordability of food) - changing diets
(higher demand for animal products, processed or imported foods as incomes rise)
What are the environmental impacts of intensive agriculture?
maintaining ecosystems:
- habitat and biodiversity loss (deforestation)
- water pollution (runoff)
(nitrogen contamination; algae blooms) - impacts on wildlife (pesticides)
- pollinating insects declining
- soil degradation
(erosion, nutrient depletion) - water use (irrigation)
- fossil fuel use and carbon emissions
What are the environmental benefits of intensive agriculture?
- “spares” land for conservation
- technology helps use water efficiently (precision irrigation)
- growing bigger livestock means that fewer animals provide more calories