MDARD Commercial Pesticide Applicator Exam: Aquatic Pest Management (Category 5)

MDARD Commercial Pesticide Applicator Exam: Aquatic Pest Management (Category 5) __________ exposure accounts for more than 80% of pesticide poisoning cases - Dermal ___________ is often the most effective method for reducing numbers of unwanted fish in small ponds. - Seining "6,7-dihydrodipyrido(1,2-a:2',1-c) pyrazinediiumdibromide" is an example of what kind of pesticide name? - Chemical name "Fluridone" is an example of what kind of pesticide name? - Common name "Reward" is an example of what kind of pesticide name? - Brand name "Sensitization" is another term for - Allergic effects 4 types of exposure - 1. Dermal 2. Oral 3. Inhalation 4. Ocular A convenient unit for measuring water volume for determining herbicide concentration is the - acre-foot (acre of surface area x average depth in feet) A disadvantage of diaphragm pumps is their high cost. True or false? - Fasle. Diaphragm pumps are relatively inexpensive and are often used instead of piston pumps for this reason. Act 451, Part 31 Water Resources Protection Act (2) - 1. Prohibits discharging of harmful substances into state waters that endangers public health, natural resources, etc. 2. Gives MDEQ regulatory jurisdiction over mosquito control strategies involving surface waters Aeration may control ________ but does not affect ________ - algae, macrophytes Algae that form dense mats and have a slimy or coarse texture - Filamentous algae Algae that resembles vascular plants and aid in the prevention of other nuisance algae from growing - Erect algae Aquatic Nuisance - Any propagating organism that impairs enjoyment or use of waters of the state Aquatic pesticides are known to last a long time and accumulate in organisms. True or False? - False Aquatic plant type that is not attached to sediment and floats on or just below the water surface - Free-floating Aquatic plant type that is rooted in sediment and extends above the water surface - Emersed / emergent Aquatic plant type that's attached to sediment and has leaves that float on the water surface - Rooted-floating As a rule of thumb, suction hose diameters should be at least as large as _____________________ - the pump inlet port At what growing stage are herbicides that affect cell division most effective? - Preemergence At what point in the growth cycle are foliar-active herbicides the most effective for perennial plants? - Late and postflowering periods (when perennial plants are translocating materials downwards towards the roots) Before an aquatic pesticide is labeled by the EPA, research requiring approximately _________ years to complete must be conducted. - 10 Biological factors that contribute to susceptibility to selective herbicides (3) - 1. Physiological factors 2. Morphological factors 3. Stage of plant growth Bottom treatments are not reccomended if a body of water has ______ water or _______ bottoms - flowing, muddy Catfish are _______ susceptible to piscicides than perch - less Centrifugal pump capacity, speed, max pressure, spray material - High pump capacity (0-150 gpm) Mid to high speed (600-6000 rpm) Low pressure (70 psi) Abrasive Conditions for an exemption from rules (incidental use) (3) - 1. A general use pesticide is used 2. The person is not regularly engaged in the application of pesticides for hire 3. The pesticide application is an integral part of another operation Contact herbicides are generally most effective on __________ _________ plants - annual herbaceous Contact herbicides often control aquatic plants for ______-______ weeks depending on the growing season - 3,6 Cultural technique used to control weeds by draining the water level to expose weeds - Winter drawdown Cultural technique used to cover bottom sediments with material - Benthic Barriers Curly-leaf pondweed main reproduction technique - Rhizomes and turions D.O. - Dissolved oxygen Diaphragm pump capacity, speed, max pressure, spray material - Moderate pump capacity (1-60 gpm) Low to mid speed (200-1200 rpm) High pressure (850 psi) Abrasive Disadvantages of grass carp introduction as a biological control - Eat too many native plants before consuming exotic species Do not treat more than ______-_______% of the surface area of a body of water at any given time - 30,50 Dominant fish species in waters where phytoplankton and rooted plant production are high - Bass, bluegill, pike Dominant fish species in waters where phytoplankton and rooted plant production