Systemic Insecticides Applied as Tray Drench and Transplant Water Treatments for Insect Control on Burley Tobacco, 2007

Evaluation of Seedling Tray Drench of Insecticides for Cabbage Maggot (Diptera: Anthomyiidae) Management in Broccoli and Cauliflower

“…Most of the broccoli and cauliflower ha planted in California's central coast are transplanted rather than directly seeded; the tray drench tactic is a good fit for this cultural practice. Tray drench of insecticides have been effective against other pests such as imidacloprid, thiamethoxam, or clothianidin on feeding damage produced by the tobacco flea beetle, Epitrix hirtipennis (Melsheimer) (Coleoptera: Chrysomelidae); green peach aphid density (Myzus persicae [Sulzer]; Hemiptera: Aphididae) on tobacco (Nicotiana tabacum L.; Solanaceae) (Semtner 2005;Semtner & Srigiriraju 2005;Semtner & Wright 2005;Semtner et al 2008); chlorantraniliprole against cabbage looper, Trichoplusia ni (Hübner) (Lepidoptera: Noctuidae) on cabbage (Cameron et al 2015); and neonicotinoids against painted bug, Bagrada hilaris (Burmeister) (Hemiptera: Pentatomidae) in broccoli (Joseph et al 2016). Clearly, our study shows that insecticide delivered as seedling tray drench can effectively reduce the severity of D. radicum infestation and allows the plant to develop normally, especially under heavy infestation scenarios as evident in trial 3 (Fig.…”

Insecticides applied to soil of transplant plugs for Bagrada hilaris (Burmeister) (Hemiptera: Pentatomidae) management in broccoli

“…Tray drenches of neonicotinoids have been effective against other pests. For instance, drenches of imidacloprid, thiamethoxam or clothianidin reduced tobacco flea beetle [Epitrix hirtipennis (Melsheimer)] feeding damage and number of green peach aphids [Myzus persicae (Sulzer)] on tobacco (Nicotiana tabacum L.) (Semtner, 2005;Semtner and Srigiriraju, 2005;Semtner and Wright, 2005;Semtner et al, 2008), while chlorantraniliprole was effective against cabbage looper [Trichoplusia ni (Hübner)] on cabbage (Cameron et al, 2015). In our study with broccoli, we also tested non-neonicotinoid systemic insecticides as tray drenches including cyantraniliprole and cyclaniliprole, as well as contact insecticides, such as flonicamid, spinetoram, tolfenpyrad, and bifenthrin, but most did not consistently affect B. hilaris damage.…”