Title:	Impact of defoliation on height and diameter of a first year rising cottonwood plantation
Author(s):	Beatty, T. Keith; Stone, W. Doug; Nebeker, T. Evan
Date:	2006
Source:	Gen. Tech. Rep. SRS-92. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp. 255
Description:	In 2003, an 8-year study was initiated to determine the impact of herbivores on three selected eastern cottonwood clones. The plantation, managed by MeadWestvaco, is located just north of Hayti, Pemiscot County, MO. Each clone was planted in 100 (10 x 10) tree plots. There was a total of 8 blocks, each of which contained all 3 clones (300 trees). Four of the eight blocks were not protected from defoliation (untreated) and the remaining four (treated) were treated with an insecticide to control the cottonwood leaf beetle (CLB) (Chrysomela scripta F.) and other incidental herbivores. The 8-year objective is to determine the overall losses and/or gains associated with controlling or not controlling defoliation caused primarily by the CLB.
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