July 23 Quiz Jay Whetter July 23, 2014 Leave a Comment 1. What two insects require sweeping netting to match field populations with economic thresholds? Choose two from the list. Bertha armywormCabbage seedpod weevilDiamondback moth larvaeGrasshoppersLygus 2. Diamondback moth larvae at threshold levels are really only a threat if they’re eating _______. LeavesFlowersPods Stems 3. When scouting for this insect, you have to shake all canola plants within a determined area (50 cm by 50 cm is an appropriately sized area) and then count how many of these insects you find on the ground. AphidsBertha armywormLygusRed turnip beetle 4. This is a mystery question. We don't know what this is and are hoping you can help us. Have you seen this before? What is it? Note: You don't have to answer this if you don't have an educated guess. It won't count against your quiz score. (Photo source: Katrina Martfeld) Loading...