The following words and terms when used in this subchapter, shall have the following meanings, unless the context clearly indicates otherwise.(1) Bio-intensive control--The use of biologically based pest control tactics, rather than traditional chemical control methods. Biologically based pest control tactics include biological controls, resistant host plants, cultural controls, botanical insecticides, or sterile insect techniques that cause little or no detrimental effect on non-target organisms.(2) Foundation--Texas Boll Weevil Eradication Foundation, Inc.(3) Work unit--That area of cotton within a boll weevil eradication zone overseen by a Foundation Field Unit Supervisor.