EAE1022 Lecture Notes - Lecture 17: Peak Phosphorus, Food Energy, Food Security
30 Aug 2018
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Eae1022 lecture 17 - earth, atmosphere and environment. Pillars of food security: availability, production, land and water management, processing, trade and stockpiling, access. Infrastructure, transport and distribution: utilisation, food and nutrition knowledge, food preparation. Cultural knowledge: health status, hygiene (clean water and sanitation) Stability: stable supply risk reduction, environmental sustainability. The green revolution: technological response to food shortage after wwii. Irrigation: high yielding varieties, double cropping, use of modern agricultural equipment, credit facilities and fair price policies, the impacts of the green revolution. Increased use of water: decreased genetic diversity, (cid:1009)0,000 edi(cid:271)le pla(cid:374)ts; just 3 pro(cid:448)ide (cid:1010)0% of the (cid:449)orld"s food e(cid:374)erg(cid:455) i(cid:374)take rice, maize (corn) and wheat. Lessons from the green revolutions: discovered high-yielding varieties that could thrive. Reliance on annual crops (purchase of seeds) excluded poorer farmers. Loss of genetic diverse increases susceptibility to pests and diseases: excessive use of fertilisers and pesticides may outweigh benefits, need to focus on people for successful sustainable practices.
