Illinois Pesticide Applicator Exam Complete Questions and Answers

Spot Application - ANSWER Treats only a portion of the total area and are used to control pests that are grouped or clustered. Band Application - ANSWER treat only a narrow strip over alongside a row of desirable plants. Broadcast Application - ANSWER Treats the entire area or field. Effective Swath Width - ANSWER The distance each successive swatch should be offset in order to allow edges of neighboring swaths to overlap. Hydraulic agitation - ANSWER A mixing method in which some solution circulates through the pump and back into the tank Mechanical Agitation - ANSWER A mixing method using paddles. Flat Flan - ANSWER A thin sheet of spray produced by a flat flan nozzle. Even Flat Flan - ANSWER Thin sheet of spray with uniform deposits across its band width. Hollow Cone - ANSWER Deposits spray in a circle with no droplets in the center. Full Cone - ANSWER Spray in a circle with droplets throughout the circle. Spray quality and Droplet Spectrum - ANSWER Both describe the range in droplet size that a spray nozzle produces. Drift - ANSWER A pesticide that moves through the air and escapes to other areas is pesticide drift. Particle Drift - ANSWER he off target movement of spray particles (droplets) through the air. Volatile - ANSWER Readily vaporizable or fume producing even at relatively low temperatures. Economic Injury Level - ANSWER Break-even point at which the cost of pest control equals the revenue loss caused by a pest. Economic Threshold - ANSWER Is the density of a pest at which a control treatment will provide an economic return. An economic threshold is the insect's population level or extent of crop damage at which the value of the crop destroyed exceeds the cost of controlling the pest. Perennial Weed - ANSWER A weed that lives for more than 2 years. It may be herbaceous or woody, depending on whether it's stem over winter. Biennial Weed - ANSWER A weed that lives for two years. Biennials form a rosette in their first year of life, then produce seed and die in the second year. Adjuvant - ANSWER A chemical added to a pesticide formulation or mixture to modify the physical properties or enhance performance. Back-Siphoning - ANSWER The movement of a liquid pesticide mixture from a spray tank through the filling hose into the water source. Buffering Agents - ANSWER Adjuvants used to reduce pesticide inactivation due to the pH of the spray carrier. Early Preplant - ANSWER Application of a pesticide several weeks before a crop is planted. Antagonism - ANSWER The reduction in effectiveness of one or more pesticide components when two or more pesticides are combined. Annual Weed - ANSWER Weed plant that completes its life cycle in 1 year