The lack of adequate data on the short and long-term impacts of Black Army Cutworm (BAC) damage (in relation to seedling mortality and height growth) and the capability of a pheromone trapping system to predict subsequent BAC larval populations were the primary research topics addressed in this study. Due to the complex interaction of available herbaceous vegetation and larval density with seedling defoliation, data on vegetation preference and larval stages were also collected in order to accomplish the following objectives:
Assessment of mortality losses and height growth reductions due to BAC defoliation and terminal bud damage; Assessment of the influence of initial seedling height and time of planting in relation to defoliation upon rates of mortality and height growth losses; Determination of seedling susceptibility of different species to BAC related defoliation and damage; Correlation of pheromone trap catches with subsequent larval populations and seedling damage; Assessment of the association between vegetation defoliation during larval feeding and final level of seedling defoliation; and, Development of guidelines to assist foresters in minimizing the losses to this regeneration pest.
FRDA Research Report 117 (3531 KB)
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Updated July 24, 2015