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Mechanical pruning of trees is becoming increasingly common in commercial pecan orchards. This practice generates considerable biomass. For example, in Doña Ana County, N.M., an estimated 25,500 tons of pecan pruning wood is produced annually

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.I.; Statpoint Technologies, Inc., Warrenton, VA). Results and Discussion All species studied had a greater N content and lesser C/N ratio in bark than in wood; in all species except in goat willow, the C content was greater in wood than in bark ( Table 1

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; Wright and Browder, 2005 ). Chipped wood from softwood trees has shown excellent potential to supplement peatmoss supplies with few changes in production practices ( Boyer et al., 2012a ; Murphy et al., 2011 ). Pine wood substrate studies on ornamental

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dehydrogenase enzyme activity ( Boggs et al., 2000 ; Drinkwater et al., 1995 ; Reganold, 1993 ). In Doña Ana County, NM, alone, an estimated 25,500 t of pecan pruning wood is produced annually ( Cabral, 2005 ). Much of the pruning wood is burned as an

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Technologies, Inc., Warrenton, VA). Results and Discussion All species studied, except for the european pear ( Pyrus communis L.), had a greater N content and lesser C/N ratio in their bark than in wood; in all species, the C content was greater in

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). Thus, tree mortality resulting from diseases, wood decay, and insects causes significant economic losses in many different ways. Despite the importance and valuable roles that landscape trees play in the enhancement of our quality of life, urban trees

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containerized plant production ( Weston, 2005 ). However, wood chips and leaf mulches from several woody perennials, including southern redcedar and southern magnolia, may contain water-soluble natural products with phytotoxic activities and they could therefore

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wood as a substrate component for plant production have proven successful as an alternative for peatmoss ( Boyer et al., 2008 ; Gerber et al., 1999 ; Jackson et al., 2008a ; Wright et al., 2008 ). In contrast to peat-lite- (PL) and PB

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agricultural, municipal, or waste by-products. Numerous studies have investigated a variety of substitutes for peat, PB, and perlite such as cotton gin waste ( Owings, 1993 ), wood by-products ( Chong and Lumis, 2000 ; Criley and Watanabe, 1974 ), municipal

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substrates, other variables, including chemical composition, particle size, and hardness ( Argo and Fisher, 2002 ), should be considered. Increased interest in using substrates containing pine wood components has led to many unanswered questions about their

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