Swiss Needle Cast Quiz Swiss Needle Cast Quiz Take the Quiz! Get a perfect score! Earn the medallion! Questions may have more than one correct answer. Be sure to select all answers that are correct. If you don't get a perfect score, you can take the quiz again until you do! Please provide your email address to receive your digital medallion. Reference: Swiss Needle Cast Fact Sheet.Email(Required) 1) Swiss needle cast primarily is a problem of Douglas-fir.(Required) true false 2) Typical signs and symptoms associated with Swiss needle cast on older trees include(Required) yellowing/browning of older needles purpling/browning of needles at branch tips branch dieback needle drop oozing sap diffuse bands of small black structures along the length of affected needles none of the above 3) Swiss needle cast is caused by a(Required) bacterium fungus water mold phytoplasma nematode virus none of the above 4) Infection by the Swiss needle cast pathogen is favored by wet weather.(Required) true false 5) The Swiss needle cast pathogen more readily infects older needles than younger needles.(Required) true false 6) Strategies that can successfully help manage Swiss needle cast include(Required) using spruce trees grown from seed originating in Oregon rather than Colorado using Douglas-fir trees grown from seed originating in Oregon rather than Colorado planting susceptible trees in drier sites with high soil pH planting susceptible trees far from other trees using preventative fungicide treatments no matter what the size of the tree planting disease free nursery stock none of the above Δ
