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Proceedings of Past Forest Nursery Association Meetings:

Nursery Soil Fumigation
Dick Karsky
1997: Boise, ID
Pathogens in the soil affect the growth of young trees at tree nurseries. Cultural practices, such as crop rotation, have been used to reduce the level of pathogens in the seedling beds. In addition, chemicals have commonly been used to sterilize the beds before seed is sown. These practices increase the chances of a successful seedling crop. Fewer treatments are needed to correct diseases that affect the seedlings. The two main chemicals used to sterilize the seedling beds are Basimid and methyl bromide. Methyl bromide, the fumigant of choice, has been found to be environmentally harmful and its use will be banned by the Environmental Protection Agency in the year 2001. Methyl bromide was very effective at controlling microorganisms and killing weed seeds.
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