An additional adjustment would be necessary to allow for an increase in disposal costs resulting from a larger amount of biomass removed. If funding reductions are not offset with larger expenditures in subsequent years, tree maintenance cycles are rapidly extended. Modeling a 20 percent annual funding decrease resulted in extending one utility's cycle from 5 years to 9 years over a 12-year period. These estimates do not take into account the impact that deferred line clearance work has on service reliability, service restoration costs, and the amount of time spent on hotspotting and responding to customer requests for unscheduled maintenance. Ectomycorrhizal Fungus Inoculations of Established Residential Trees E. Thomas Smiley, Donald H. Marx, and Bruce R. Fraedrich Abstract.
Trees growing in forest soils have abundant mycorrhizae.
This association increases nutrient and water absorption, increase tolerance to stresses, decreases root disease and is, therefore, important in maintenance of forest health and vigor. The application of mycorrhizal technology in forestry and mine reclamation is at the commercial level. There is an obvious need to further test the application of mycorrhizal fungi on established landscape trees. The purpose of this project was to determine if inoculations with spores of Pt alone or in combination with slow release nitrogen fertilizer, would improve the density or development of fine roots and ectomycorrhizae on established residential trees. A secondary goal was to determine if there was significant supplantation of the naturally- occurring ectomycorrhizae on treated trees.