Illinois pesticide general standards

pest Correct Answer-any insect, mite, rodent,nematode, fungus, weed, or other plant or animal that is injurious to the health of humans, animals, or to the environment economic threshold Correct Answer-number of pests per plant or the amount of damage to a plant at which point control measures should be begun economic injury level Correct Answer-break-even point at which the cost of pest control equals the revenue loss caused by a pest aesthetic injury level Correct Answer-number of pests that might cause enough damage to the appearance of a plant to warrant the cost of control cultural control Correct Answer-improves crop health in order to make the crop better able to compete against pests. for example, a dense, vigorous stand of turfgrass that has been properly fertilized and mowed is the best defense against invading weeds. selecting plants that are resistant to insects or disease pathogens is another cultural control practice mechanical control Correct Answer-physically eliminates the best. hand pulling, hoeing, rotary hoeing, cultivating, mowing, and aquatic weed harvesting can control weeds and minimize the needs for herbicides biological control Correct Answer-the use of living organisms to reduce pest populations to economically acceptable levels. insects,diseases, or parasitic plants can be used as control agents to reduce weed competitiveness. examples for pest control-parasitic wasps to control alfalfa weevil and b.t. to control corn borers. triploid amur carp, have been used successfully in some aquatic areas. chemical control Correct Answer-may be an integ