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Enviro ch 9

TermDefinition
arable land fertile land that can be plowed to grow crops
biological pest control pest control using living organisms or naturally produced chemicals
desertification deterioration of land to the point that it becomes desert-like
droughts period when rainfall is less than average causing crop failure
erosion the wearing away of topsoil by wind or water
famine widespread food shortage
fertile soil soil that can support the rapid growth of healthy plants
low-input farming farming that does not use a lot of energy, pesticides, fertilizers, and water
malnutrition poor health condition caused by not consuming enough necessary nutrients
no-till farming procedure in which the seeds of the next crop are planted in slits cut into the soil through the remains of the previous crop
pathogens disease-causing organisms such as bacteria, viruses, and parasites
pest any organism that is not wanted or that exists in large enough numbers to cause damage
pesticides substances that kill pests
resistence the ability of a pest population to tolerate a particular pesticide
salinization the accumulation of salts in the soil
substance farming farmers who grow only enough food to feed their families
topsoil loose surface layer of soil
yield amount of crops produced per unit area
Created by: PavlishFamily
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