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UW Stout BIO 141 - Fertilizer advantages & disadvantages
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BIO 141 1st Edition Lecture 24 Outline of Last Lecture II. HistoryIII. Green RevolutionIV. EutrophicationOutline of Current Lecture V. FertilizerVI. Dead ZoneVII. IndiaVIII. Second Green RevolutionCurrent LectureFertilizers applied as...- Nitrate (NO3-)- Phosphate (PO43)Anoxic- Without oxygenHow the Dead Zone Forms- Nitrogen and Phosphorus from fertilizers flow in- Algae grow and die- Decomposer bacteria use up all oxygen India- Annual Pesticide Useo 1955: 2000 to 1985: 80,000 t- Cropland treated by pesticideo 1960: 80,000 hao Today: 6 million haOther goals and productsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Farming larger acreages with fewer people- More uniform crops – monoculturesNegative Socioeconomic Consequences - Localo Loss of power over decisionso Loss of local knowledgeo Financially unable to purchase needed inputs- Nationalo Exports in hungry countrieso New Bureaucracy Problems ahead…- Yield is plateauing- Small impact in Africa- Increasing production cost (irrigation, fertilizer, pesticide, seed)- Distribution challenges- Environmental problems- Meat consumption increasing- Population will overwhelm food supplyNeed a Second Green Revolution- 2007: UNFAO issued warning of global food shortages- Surge in grain prices = food riots in developing countries, where people spend 80% of income on food- US: spend an average of 10% of income on


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