Ornamental/turf Pesticide Applicator's Licence Exam Study Guide Questions & Answers!!

What is a Sign? {Ans: Visible pathogen or its parts or products on a host plant}What are Post-emergence herbicides? {Ans: Herbicides that are applied after weeds are present}What are the stand symptoms of Pink snow mold? {Ans: Circular patches 2-6 inces in diameter develop during prolonged periods of cool wet weather. If severe, spots merge to form large areas of diseased turf. The grass on the outer edge of the patches generally appears water-soaked (wet and slimy) with profuse gray or pink mycelia of the fungus present in high humidity}When would weather conditions cause herbicide failure? {Ans: If the weather is too hot, too dry, or too cold}What are the 2 different kinds of metamorphosis that insect pests undergo? {Ans: 1.) Gradual metamorphosis: Nymphs (young stages) of insects that undergo this look like small versions of the adult 2.) Complete metamorphosis (most common type of development among turf grass pests): The young stages of insects that undergo this look very different from the adults before before they become pupae and change into adults}Sod webworms... {Ans: Spin silk webbing near the soil in turf}