Ornamental And Shade Tree Pesticide (Pa Category 6) Questions And Answers Already Passed

How do you distinguish between Crown galls and Black knot fungus galls? {Ans: Crown galls infect plants through recent wounds in stems or roots (i.e.., not dependent on environmental conditions); they are normally not harmful and can be left. Black knot fungus creates galls that eventually become hard, brittle, and coal-black.}Multiflora Rose can be best described as a {Ans: Woody spreading shrub with sharp thorns and red "hips"}What the difference between skeletonizer, leafminer, and a borer insect pest damage? {Ans: Skeletonizers feed on leaves eating the leaf tissue between the veins making it look like a skeleton. Leafminers chew on the soft tissue between the top and bottom surfaces of leaves. Borers chew under the bark of ornamental plants, which includes branches and trunks}How do you distinguish webs from Fall webworms and Eastern tent caterpillars? {Ans: Fall webworms build nests on the ends of branches during summer and fall. Eastern tent caterpillars are located in the crotches of trees in the spring.}To calculate how much herbicide to inject into a tree, why do you need the circumference at both DBH (54in or 4.5ft) and 12in off ground? {Ans: Calculations for dose of herbicide for a