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Pine which has seeded heavily and which has never been thinned out is sometimes referred to in forestry as doghair pine. The trees grow very closely together. They are mostly very thin and as numerous as dog hair. If one plans to manage the stand of trees as a tree farm, thinning is best management practice. The standard monoculture method would be to thin out trees to make tractor width roads for maintenance. The removed trees may sometimes be used or sold as fence posts after pressure treatment. Since monoculture increases risk of pest and disease infestation, mixed use methods are sometimes employed. These might include silvopasture (mixed trees and pasture) or adding other tree species on the same land.