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Proceedings of Past Forest Nursery Association Meetings:

Soil Fumigation in Southern United States Forest Tree Nurseries
Cordell, C.E.
1989: Bismark, ND
Soils in bareroot forest tree nurseries in the Southern United States have
been safely and efficiently fumigated for three decades. The primary target organisms are
the soilborne pathogenic fungi that cause root rot and damping-off on both conifer and
hardwood seedlings. A formulation of 67 percent methyl bromide and 33 percent chloropicrin
has consistently provided the most effective control of these diseases. Methyl bromide is
presently used in over 90 percent of the southern nurseries. Alternative soil treatments are
urgently needed. Guidelines and precautions on fumigants, application methods, benefits
and costs, and registration and safety are presented. Factors affecting soil fumigation results
are emphasized.
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