tion Order Form. The links to the study guide and order form are located on the Licensing and Certification Program web site at http://cdpr.ca.gov.
LC50. the lethal concentration of a pesticide in the air or in a body of water that will kill half of a test animal population. LC50 val- ues are given in micrograms per milliliter of air or water (μg/ml).
LD50. the lethal dose of a pesticide that will kill half of a test ani- mal population. LD50 values are given in milligrams per kilogram of test animal body weight (mg/ kg).
lethal concentration. see LC50. lethal dose. see LD50.
long-term health problem. a pes- ticide-related illness or disease that may extend over months, years, or a lifetime.
Material Safety Data Sheet (MSDS). an information sheet provided by a pesticide manu- facturer describing chemical qualities, hazards, safety precau- tions, and emergency proce- dures to be followed in case of a spill, fire, or other emergency.
medical facility. a clinic, hospital, or physician’s office where imme- diate medical care for pesticide- related illness or injury can be obtained.
microorganism. an organism of mi- croscopic size, such as a bacte- rium, virus, fungus, or alga.
mode of action. the way a pesticide reacts with a pest organism to destroy it.
Monthly Pesticide Use Report. a form that must be completed and submitted to the local coun- ty agricultural commissioner’s office by the tenth of the month following any month in which agricultural-use or DPR restrict- ed-use pesticides are applied.
MSDS. see Material Safety Data Sheet.
mycelium. the vegetative body of a fungus. consisting of a mass of slen- der filaments called hyphae. (plural: mycelia.)
no observable effect level. see NOEL.
NOEL (no observable effect level). the NOEL is the maximum dose or exposure level of a pesticide that produces no noticeable toxic effect on test animals.
notification. see posting.
ocular. pertaining to the eye—this is one of the routes of entry of pesticides into the body.
operator identification number. the number assigned to an operator of agricultural or other property, as de- fined in California regulations, where pesticides will be applied. Operator identification numbers are used in the pesticide use reporting process.
oral. through the mouth—this is one of the routes of entry of pesticides into the body.
pathogen. a microorganism that causes a disease.
personal protective equipment (PPE). devices and garments that protect employee handlers from exposure to pesticides. These include coveralls, eye protection, gloves and boots, respirators, aprons, and hats.
Pest Control Business License. the license that must be obtained from the Department of Pesticide Regula- tion for businesses that engage in pest control for hire.
pesticide. any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any insects, rodents, nematodes, fun- gi, or weeds, or any other forms of life declared to be pests, and any other substance or mixture of substances intended for use as a plant regulator, defoliant, or desiccant.
pesticide container. the original pack- aging for pesticide materials that includes the pesticide label. See also service container.