. Insect and disease conditions in the United States, 1979-83 : what else is growing in our forests?. Forest insects United States; Trees Diseases and pests United States; Plants Disease and pest resistance. Figure 1. Bundling bareroot stock to use in planting programs; USDA Forest Service Wind River Nursery in south- west Washington. F-705657 Figure 2. Mortality in southern bareroot nurseries by cause—1980. Weather 38% Cultural* 32% Total: 140 million seedlings killed 'Includes nutrient deficiency, herbicides, weeds, weeding, and irrigation Source: Chart based on data in article by Boyer
. Insect and disease conditions in the United States, 1979-83 : what else is growing in our forests?. Forest insects United States; Trees Diseases and pests United States; Plants Disease and pest resistance. Figure 1. Bundling bareroot stock to use in planting programs; USDA Forest Service Wind River Nursery in south- west Washington. F-705657 Figure 2. Mortality in southern bareroot nurseries by cause—1980. Weather 38% Cultural* 32% Total: 140 million seedlings killed 'Includes nutrient deficiency, herbicides, weeds, weeding, and irrigation Source: Chart based on data in article by Boyer and South entitled "Forest Nursery Practices in the South,' Southern Journal of Applied Forestry, Volume 8, No. 2; 1984. be grouped into four causes: cultural practices; weather; a combination of other causes; and pests (Boyer and South 1984). Pests, according to the nursery managers' estimates, killed million seedlings, about 20 percent of the seedlings killed during 1980 (fig. 2). An average- sized nursery in the region pro- duces about million seedlings annually; pest-caused losses un- doubtedly limit the number of available seedlings. Historical Perspective Many of the first nurseries were opened in 1924, after pas- sage of the Clarke-McNary Act. These nurseries were established in the South, where farmland had been abandoned but was still able to support tree crops. Production exploded in the 1930's; more and larger nurseries were started to supply the activities of the newly formed Soil Conservation Service and the Civilian Conservation Corps. The Soil Bank Act of 1956 further stimulated nursery development (May 1980). Forest industry began to recognize the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Loomis, Robert C; Tucker, Susan; Hofacker, Thomas H; United States. State a
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