1    Dagger nematodes are vectors of which virus? a.    Prune dwarf b.    Tomato ring spot c.    Professor Plum pox d.    Prunus necrotic ring spot     2    Minerals make up what percentage of typical soil? a.    5 percent b.    45 percent c.    63 percent d.    95 percent     3    What percentage of herbicides used in the western United States contain the active ingredient glyphosate? a.    10 percent b.    20 percent c.    40 percent d.    80 percent     4    Which of the following is not an herbicide? a.    Rage b.    Recoil c.    Goal d.    Poast e.    Palace     5    Which of […]