Studies on the biology of negatoria and childers Canegrubs as a basis for development of improved controls : SRDC final report BS77S
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The biology of the two most important species of canegrubs affecting sugarcane in southern Queensland. Childers canegrub (Antirogus parvulus Britton) and negatoria canegrub (Lepidiota negatoria Blackburn) was studied during a 5-year period. Rearing methods were developed and the phenology of each species was determined. Data were collected on development, mortality and reproduction in laboratory and field trials; these data were summarised as a computer model for each species. Various management scenarios were simulated using the computer models. Short crop-length (3-4 years) and consistent application of control measures (insecticide and plough-out) could drive populations of canegrubs to extinction after 5-8 generations. Further field data are needed to validate many of the results of the model.