Research Note ECTOMYCORRHIZAL FUNGUS INOCULATIONS OF….pdfVIP

Journal of Arboriculture 23(3): May 1997 113 Research Note ECTOMYCORRHIZAL FUNGUS INOCULATIONS OF ESTABLISHED RESIDENTIAL TREES 1 2 1 by E. Thomas Smiley , Donald H. Marx , and Bruce R. Fraedrich Trees growing in forest soils have abundant ranged from 56 to 71 cm (22 in . to 28 in.). Soil mycorrhizae. This association increases nutrient was a clay loam with pH ranging from 5.1 to 7.1 . and water absorption , increase tolerance to Treatments consisted of the following soil stresses, decreases root disease and is, therefore, injections: important in maintenance of forest health and vigor 1. MycorTree™ Pt Injectable at a rate of 114 g (1). Certain species of ectomy-corrhizae improve per 378 I (1/4 Ib. per 100 gal.) of water survival and growth of pine and oak seedlings on 2. MycorTree™ Pt Injectable at the same rate plus clear-cut reforestation sites, on forestation sites Bartlett Boosf® (28-9-9) at a rate of 18 kg per in the tropics, and on adverse sites, such as coal 378 I (40 lbs. per 100 gal.) of water mined lands and borrow pits (2). The application 3. Bartlett Boost® (28-9-9) slow release fertilizer of mycorrhizal technology in forestry and mine at a rate of 18 kg per 378 I (40 lbs. per 100 reclamation is at the commercial level . gallons) of water Recently, a preliminary study showed that the 4 . Water control fine roots and ectomycorrhizal development were sign