WI pesticide applicator test latest version graded A+

WI pesticide applicator test latest version graded A+ What are examples of plant diseases? Fungi,Oomycetes,Bacteria,Viroids, Oomycetes can be describe as Water Molds prerequisites for a plant disease population, Host, ideal environment, time, Largest Group of plant diseases Fungi A Chemical Formulation capable of causing injury to plants Phytotoxic Reasons to consider treating an infected area with pesticides When other prsctices don't work,high value,quality reduced,sudden breakout What is abiotic Non-living (example wind damage) What is biotic? living (Example Fungi) T or F Should you avoid driving through field when foliage is wet, to prevent diseases. T What is a Pest any organism that competes with people for food, fiber or space, or presents a health risk to people or domestic animals What is an Arthropod Arthropods are invertebrate animals with an exoskeleton, like insects and arachnids What type of damages do arthropods cause Chewing on leaves, Tunneling in roots, Sucking on plant, cause galls, Inject toxins, transmit diseases, feed on livestock Difference between insects and arachnids Insects have 3 pairs of legs, wings and antennae 3 regions of the body head, thorax and abdomen. While arachnids have 4 pairs of legs, not wing and no antennae 2 regions head and thorax. What is the difference between simple metamorphosis and complete metamorphosis Simple Metamoph. is 3 stages egg, nymph, and adult. gradual change. Complex Metamorph. 4 distinct stages egg, larva, pupa, and adult How dose Temp. and Humidity effect insect development. Higher temp and humidity is typically better for insects. Temp above threshold will increase reproduction and humidity will decrease stress. Corn ear worm properties can vary in color grow 1 inch 1/2 long Advantages of using insecticides effective against thousands of insects, they act quickly, effectiveness can be evaluated quickly, equipment and formulations are common disadvantages of insecticides the wide range can kill beneficial insects, reapeated use can lead to resistance, added cost of production, potential for drift to areas with benifical insects Describe ways insecticides are used Seed Treatment, Soil Application (in Furrow), foliar application to leaves or fruit. Define weed Unwanted Plants, we consider all plants except the crop to be a weed. Two Main Goals of weed management. Minimize weed competition, and yield loss. Other main goal is to limit a weeds reproductions to reduce weed population in future years. Describe ways weeds can pose problems in crop production Compete with crops, Reduce crop quality, interfere with production, produce