Activity of grape root borer (Lepidoptera: Sesiidae) in southern Mississippi
1994
Harris, J.P. | Smith, B.J. | Olien, W.C.
Muscadine grape vines were excavated from vineyards in southern Mississippi and examined for damage caused by the grape root borer, Vitacea polistiformis (Harris), and for the presence of borer larvae. Generally young vines (< 12 yr old) had no visible root borer damage and no borers were present; vines 12 to 15 yr old had moderate damage and borers were present; older vines had severe damage and borers were present. Grape root borer populations were monitored over 5 yr with pheromone traps. No moths were trapped before 15 june or after 2 October. Peak moth captures occurred from 15 July through 2 September. These data indicate that vineyards in southern Mississippi should be treated with an insecticide during the 2nd or 3rd wk of July for effective grape root borer control.
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