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CH 13 Food Production Sec 13. 1 I. Food Production (3 systems) 1. Crop land (76%) 2. Rangeland (17%) 3. Oceans (7%) Since the 1950’s food production has.

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Presentation on theme: "CH 13 Food Production Sec 13. 1 I. Food Production (3 systems) 1. Crop land (76%) 2. Rangeland (17%) 3. Oceans (7%) Since the 1950’s food production has."— Presentation transcript:

1 CH 13 Food Production Sec I. Food Production (3 systems) 1. Crop land (76%) 2. Rangeland (17%) 3. Oceans (7%) Since the 1950’s food production has increased? Why?____ 15 plants and 8 animals supply 90% of world’s calories. 3 biggies in plant family? ____

2 B. 2 major types of Food Production 1. Industrialized Ag or _____ (25% of all crop land)- mostly _______ countries. Uses lots of _________________. a. Plantation Ag-growing _____& occurs ____ 2. Traditional Ag (2 types) a. Traditional Subsistence Ag. (low input) uses no machines – just enough for family b. Traditional Intensive Ag.-use more ____ to grow for family and sell some See p 280 charts**

3 II. Green Revolution (3 steps to increasing yield) 1. plant high yield monocultures ex__ 2. High Input 3. Use multiple cropping *Increased yields in ______ countries from 1950’s – 70’s. Why? _________ (called the 1st_________) *2nd green revolution = _______________________________ Pg. 282

4 III. Case: Food Production in US – Agribusiness__!!! “Average food eaten travels 1300 miles” IV. Growing Techniques used in Traditional Ag. Interplanting=__ Why? (4 Types of Interplanting) 1. Polyvarietal cultivation -____ 2. Intercropping - ______ 3. Agroforestry/Alley cropping-________ 4. Polyculture –________ produced higher yields than high input. advantages:

5 V. Food Production Undernurished-not enough____ -vs- Malnurishment-deficient in ____ ex. _____ Examples: marasmus and kwashiorkor Micronutrient defficiencies from: Overnutrition: 1 in 8 not fed b/c food not distributed equally? Why?

6 How do you increase crop production: 1.Crossbreeding- 2. Genetic Engineering (GMO’s)- 3.Expand Green Revolution- 4. Irrigate more land- 5. Cultivate more land


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