Browsing by Author "DuPlissis, John"

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    Effects of site preparation, seedling quality, and tree shelters on planted northern red oak.
    (University of Minnesota, 2000-02) DuPlissis, John; Yin, Xiwei; Baughman, Melvin J.
    Effects of site preparation, seedling quality, and tree shelters on planted northern red oaks were studied through field trials in southeastern Minnesota. Seedling survival, height and diameter growth were greater for seedlings planted under 10 square feet per acre of residual basal area compared to 47 square feet per acre. Chemical and mechanical site preparation increased seedling survival and growth over no site preparation. Seedlings with at least six first-order lateral roots had higher survival and diameter growth than nursery run seedlings. Tree shelters increased seedling height growth, but not diameter growth or survival.
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    Grower's Guide for Hybrid Poplar Plantations for Biomass Production
    (University of Minnesota Duluth, 2020-05) Buchman, Daniel; Jackson, Jeffrey; Berguson, William E; McMahon, Bernard G; Nelson, Neil D; DuPlissis, John; Host, George E
    The goal of this Grower’s Guide is to provide practical advice for the establishment and maintenance of hybrid poplar plantations, plantings of trees in rows managed like an agronomic crop to produce fiber and biomass. Hybrid poplar are planted on several continents in a wide variety of applications: examples, in addition to biomass/wood production, include windbreaks, shelterbelts, phytoremediation, mine reclamation, and wastewater treatment. Advice for the establishment of hybrid poplar in these applications should come from other sources, as this guide is focused on growing hybrid poplar in plantation settings. Plantations could be owned by a private landowner or a corporation. Short-rotation woody crops (SRWC) show promise to fill specific niches in the world’s developing bioeconomy. These crops, such as eastern cottonwood, hybrid poplar, and hybrid willow, are receiving increasing interest as plantation crops to provide biomass for renewable energy such as combustion for combined heat and power – CHP, biofuels, bio-based chemicals, and bioproducts. Hybrid poplars have also been grown to produce wood for pulp and paper and oriented strand board (OSB) as well as veneer for plywood manufacturing. The selection of hybrid poplar, cottonwood, or willow depends on the region is which they will be grown and the end use.
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    Intellectual Property in the NRRI Hybrid Poplar Program – Inventory, Commercialization Plan, and Progress Report
    (University of Minnesota Duluth, 2021-02) Nelson, Neil D; Berguson, William E; McMahon, Bernard G; Jackson, Jeffrey; Buchman, Daniel; DuPlissis, John; White, Timothy W
    Intellectual property in the NRRI hybrid poplar program was analyzed, and elite clones were prioritized for plant patent applications to the USPTO. Clones were selected in two hybrid categories, Populus deltoides x Populus nigra (D x N, DN) and Populus deltoides x Populus deltoides (D x D, DD). Positive traits attributed to these clones include fast and stable growth, broad adaptability (geo-robustness), disease resistance, good rooting ability, good vigor in stoolbeds (cutting orchards), and good performance in phytoremediation applications. Six Generation 1.0 improved clones were selected for possible patenting, four DN and two DD, out of 13,000 1st generation genotypes tested, a selection intensity of 0.0005 (0.05 %). Market size is discussed, a patent strategy is formulated, and a commercialization action plan and timeline compiled. We are working with University of Minnesota Technology Commercialization (TC) on a patenting and licensing evaluation. One improved DN clone has been selected for initial commercialization, a one-page marketing flyer on the clone has been designed, and selected private and public nurseries are being offered free cuttings of the selected clone for propagation testing as a prelude to potential licensing.