Effect of Dazomet Rate and Incorporation Method on Pine Production in Southern Pine Nurseries
Southern forest-tree nurseries are growing an average of 1.2 billion seedlings per year or 80 percent of America's total seedling production. To control weeds and soil-borne pathogens, 89 percent of those nurseries fumigate, largely with methyl bromide. Dazomet (Basamide) is a chemical alternative to methyl bromide-chloropicrin for soil fumigation. Although tests have demonstrated its usefulness in western and northern forest-tree nurseries, it has not gained widespread acceptance in the South. Recent studies suggest that method of incorporation may influence dazomet's effectiveness in controlling specific soil-borne pests (2). The purpose of this study was to determine if method of incorporation, as well as time and rate of application of dazomet, would affect pine seedling production and quality, and control soil-borne fungi, nematodes, and weeds.