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Definition
| the mixture of disintegrated organic matter |
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Definition
| the base geological material in a particular location |
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Definition
| the mass of solid rock that makes up the earths crust |
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Definition
| the physical and chemical processes that break down rocks and minerals into smaller particles |
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Definition
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Definition
| accross-section of all the soil horizons in a specific soil |
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Definition
| soil that is approximitly equal parts, sand, clay,and silt) |
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Definition
| the deterioration of those characteristics of soil needed for plant growth or other ecosystem services |
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Definition
| allowing animals to eat so much of the plant cover in a field or pasture that the plants cannot regrow |
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Term
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Definition
| a loss of more than percent in the productivity of soil due to erosion, deforestation, overgrazing, drought, or other factors |
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Term
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Definition
| using a source other than precipitation to water crops |
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Definition
| the build up of salts in the surface layers of soil |
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Definition
| chemicals used to kill organisms that attack or compete with plants that humans value |
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Term
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Definition
| a type of farming that relies on human and animal power along with hand tools and nonmotorized machines |
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Term
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Definition
| the amount of a crop produced in a given area |
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Definition
| a type of farming that relies on technology and chemicals to increase yields and reduce costs |
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Definition
| the intro of new technologies, crop varieties, and farming practices to the developing world |
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Term
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Definition
| the use of organisms to battle pests and weeds |
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Term
| integrated pest management |
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Definition
| the use of both biological and chemical methods to control safely and economically |
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Term
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Definition
| an insect or animal that transfers pollen from one plant to another |
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