Powdery Scab Quiz Powdery Scab 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: Powdery Scab Fact Sheet.Email(Required) 1) Powdery scab can be a problem on(Required) peas potatoes rutabaga beans carrots turnips corn none of the above 2) Potato scab is caused by a(Required) bacterium fungus water mold phytoplasma nematode virus none of the above 3) The powdery scab pathogen can cause damage on its own but is perhaps more important because it can transmit Potato mop-top virus.(Required) true false 4) Powdery scab symptoms on above-ground parts of susceptible plants can include stem cankers near the soil line.(Required) true false 5) Powdery scab symptoms on below-ground parts of susceptible plants could potentially be misidentified as those of common scab.(Required) true false 6) Powdery scab is typically more of a problem when weather conditions are hot and wet.(Required) true false 7) Strategies that can successfully help manage powdery scab include(Required) using resistant varieties preventing introduction of the pathogen into a field by using pathogen-free planting stock increasing soil pH using proper rotation avoiding use of lime when fertilizing avoiding overly wet sites or overwatering when growing susceptible plants hot composting infected plants keeping weeds, in particular nightshade and ground cherry, under control Δ
