Table Six rainfall and irrigation efficiency scenarios – Scenario 1 Scenario 2 Scenario 3 Scenario 4 Scenario 5 Scenario 6 Avg rainfall, Avg rainfall, Avg rainfall, Drought Drought Drought flood furrow center-pivot drip year, flood year, year, drip irrigation sprinkler irrigation furrow irrigation irrigation sprinkler Annual Middle of Middle of Middle of 25% less 25% less 25% less Precipitation range from from range from than avg than avg than avg (inches) Part 1 Part 1 Part 1 precip precip precip Efficiency 50% 75% 90% 50% 75% 90% Part 4: Discussion and Synthesis Write a short discussion (~2 paragraphs) of the benefits of the two different farming strategies: traditional cattle ranching, feedlots, and wheat, grain sorghum, and corn crops vs. high value fruits and vegetables with high-efficiency irrigation. In your discussion: include the concepts of footprints, water scarcity, dead zones, and irrigation efficiency consider both the quantity of water used (e.g., method of irrigation, water footprints) and the impacts to water quality (e.g., fertilizer runoff and the dead zone) refer to your scenarios from Part 3 the possible response in the human system to the formation of dead zones. Propose strategies that could be implemented to reduce the amount of fertilizer running off from the farmland to minimize the farm’s contribution to the dead zone in the Gulf of Mexico. Review the coupled human-natural system diagram below. Assessment Rubric Possible Points Criteria Points Awarded Part 1: Precipitation Precipitation rates from map are correct. 2 Part 2: Crops
Table – Six rainfall and irrigation efficiency scenarios Scenario 1 Avg rainfall, flood furrow irrigation Scenario 2 Avg rainfall, center-pivot sprinkler Scenario 3 Avg rainfall, drip irrigation Scenario 4 Drought year, flood furrow irrigation Scenario 5 Drought year, sprinkler Scenario 6 Drought year, drip irrigation Annual Precipitation (inches) Middle of range from Part 1 Middle of from Part 1 Middle of range from Part 1 25% less than avg precip 25% less than avg precip 25% less than avg precip Efficiency 50% 75% 90% 50% 75% 90% Part 4: Discussion and Synthesis Write a short discussion (~2 paragraphs) of the benefits of the two different farming strategies: traditional cattle ranching, feedlots, and wheat, grain sorghum, and corn crops vs. high value fruits and vegetables with high-efficiency irrigation. In your discussion: include the concepts of footprints, water scarcity, dead zones, and irrigation efficiency consider both the quantity of water used (e.g., method of irrigation, water footprints) and the impacts to water quality (e.g., fertilizer runoff and the dead zone) refer to your scenarios from Part 3 the possible response in the human system to the formation of dead zones. Propose strategies that could be implemented to reduce the amount of fertilizer running off from the farmland to minimize the farm’s contribution to the dead zone in the Gulf of Mexico. Review the coupled human-natural system diagram below. Assessment Rubric Criteria Possible Points Points Awarded Part 1: Precipitation Precipitation rates from map are correct. 2 Part 2: Crops
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