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ENVIRONMENTAL STUDY
CHAPTER 14 - AGRICULTURAL METHODS AND PEST MANAGEMENT
Question | Answer |
---|---|
polyculture | a system of agriculture that mixes different plant species in the same plots of land |
monoculture | a system of agriculture in which large tracts of land are planted with the same crop |
green revolution | the introduction of new plant varieties and farming practices that increased agricultural production worldwide during the 1950s, 1960s, and 1970s |
macronutrient | a nutrient, such as nitrogen, phosphorus, or potassium, that is required in relatively large amounts by plants |
micronutrient | a nutrient needed in extremely small amounts for proper plant growth; examples are boron, zinc, and magnesium |
pesticide | a chemical used to eliminate pests; a general term used to describe a variety of different kinds of pest killers, such as insecticides, fungicides, Rodenticides, and herbicides |
pest | an unwanted plant or animal that interferes with domesticated plants and animals or human activity |
weed | an unwanted plant |
insecticide | a pesticide designed to kill or control insects |
fungicide | a pesticide designed to kill or control fungi |
rodenticide | a pesticide designed to kill rodents |
herbicide | a pesticide designed to kill or control plants |
biocide | a kind of chemical that kills many different types of living things |
target organism | the organism a pesticide is designed to eliminate |
nontarget organism | an organism whose elimination is not purpose of pesticide application |
persistent pesticide | a pesticide that remains unchanged for a long period of time; a hard pesticide |
nonpersistent pesticide | a pesticide that degrades in a short period of time |
chlorinated hydrocarbon | a class of pesticide consisting of carbon, hydrogen, and chlorine; these pesticides are very stable |
organophosphate | a class of soft pesticides that work by interfering with normal nerve impulses |
carbamate | a class of soft pesticides that work by interfering with normal nerve impulses |
auxin | a plant hormone that stimulates growth |