Term
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Definition
| the ability to obtain sufficient, healthy food on a day-to-day basis |
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| large scale food shortages with widespread starvation and social disruption |
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Term
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Definition
1. sand and gravel
2. silts and clays
3. dead organic material
4. soil fauna and flora
5. water
6. air |
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Term
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Definition
| removes a thin layer of soil as a sheet of water flows across a nearly level or gently sloping field |
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Definition
| small rivulets of running water form and cut small channels in the soil |
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Definition
| rills expand to form bigger channels or ravines too large to be removed by cultivation |
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Definition
| soil washes away from streambanks (problem most commonly found in farmland) |
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Term
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Definition
| mineral salts accumulate in the soil |
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Definition
| soil saturated with water-- causes plant roots to die from lack of oxygen |
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Definition
| the spread of high-yield varieties of tropical wheat and rice that would provide food for growing populations in developing countries |
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Definition
| regenerative farming, or farming practices intended to reduce or repair the damage caused by by destructive practices |
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Term
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Definition
| plowing across the hill rather than up and down |
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Definition
| often combined with contour plowing, the planting of different kinds of crops in alternating strips of land contours |
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Definition
| the shaping of land to create level shelves of earth to hold water and soil |
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Definition
| a person who consumes locally produced food |
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Definition
| the site of the world's fastest growing soybean production, was previously thought to be unusable |
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Term
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Definition
| splicing a gene from one organism into the chromosome of another, has the potential to increase quantity and quality of food supply |
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