Groundwater Capture Using Hybrid Poplar Trees: Evaluation of a System in Ogden, Utah

Ferro, Ari M.; Chard, Julie K.; Kjelgren, Roger; Chard, B.; Turner, David L.; Montague, Thayne

doi:10.1080/15226510108500051

Cited by 41 publications

(36 citation statements)

References 8 publications

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“…Once a pit was excavated, the tap root was cleaned and its length, large end and small end diameters were measured in the field with a caliper. All sampled trees had a tap root, which probably reflects the type of plant material that was used to establish the plantations and the planting depth of this material (bareroot plants planted at a 30-40 cm of depth), as planting depth and plant material influence root system architecture in hybrid poplars [57]. Tap root formation have also been observed in a Euramerican clone grown in plantation after 5 years [58].…”

Section: Coarse Root Biomass Samplingmentioning

confidence: 99%

Plastic Allometry in Coarse Root Biomass of Mature Hybrid Poplar Plantations

et al. 2015

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In this study, we sampled coarse root biomass of three poplar clones in four 13-year-old hybrid poplar (Populus spp.) plantations, with the objective of developing an allometric relationship between diameter at breast height (DBH) and coarse root biomass. A second objective was to test significance of site, clone and ×site clone interaction effects on coarse root biomass, using analysis of covariance (ANCOVA), with DBH as a covariate. Across the four sites, the general allometric relationship between DBH and coarse root biomass was highly significant (R 2 =0.78, p<0.001). However, given the high significance of the site effect (p< 0.001) in the ANCOVA and the differences in data distribution between sites, two allometric relationships were developed based on the fertility class of sites (high and moderate). Environmentspecific allometric relationships developed for two site fertility classes had a better fit (R 2 =0.81-0.90, p<0.001). ANCOVA, with DBH as a covariate and site fertility class as a main effect, also showed that both of these variables significantly affected (p <0.001) coarse root biomass allocation. Environmentspecific equations showed that higher coarse root biomass was allocated in harsher environments for a given DBH, probably to improve access to growth limiting soil nutrients or to build-up larger storage sites for amino acids and non-structural carbohydrates. Consequently, poplar coarse root biomass growth is both driven by ontogeny (size) and environment, reflecting the plasticity of the root system of mature poplars. Implications of using general vs. environment-specific equations in estimating stand-level root biomass and shoot to root ratios are discussed. Shoot to root ratios calculated using environment-specific equations were more strongly correlated to key environmental variables than ratios calculated using the general equation, with soil NO 3 supply rate being the strongest predictor of the ratio (R 2 =0.90, p<0.001).

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Section: Coarse Root Biomass Samplingmentioning

confidence: 99%

Plastic Allometry in Coarse Root Biomass of Mature Hybrid Poplar Plantations

et al. 2015

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“…In particular, comparisons of TDP and load cell estimated water loss of containerized species is limited, and has produced variable results. Ferro et al (13) reports daily, TDP estimated water loss of containerized hybrid poplar was substantially underestimated when compared to water loss estimated by load cells. However, Braun and Schmid (4) report daily containerized grapevine water loss measured by TDPs was well correlated with containerized grapevine water loss measured by load cells.…”

Section: Introductionmentioning

confidence: 99%

“…To date, research using TDPs to investigate water loss of horticultural species has been limited to grapevines (Vitis vinifera) (4,34), bananas (Musa 'Cavendish') (24), mesquite (Prosopis alba), desert willow (Chilopsis linearis), live oak (Quercus virginiana) (9), and hybrid poplars (Populus deltoides x P. nigra) (13). In particular, comparisons of TDP and load cell estimated water loss of containerized species is limited, and has produced variable results.…”

Section: Introductionmentioning

confidence: 99%

Pollen‐Mediated Gene Flow from Kentucky Bluegrass under Cultivated Field Conditions

et al. 2006

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To direct, fund, promote and communicate horticultural research, which increases the quality and value of ornamental plants, improves the productivity and profitability of the nursery and landscape industry, and protects and enhances the environment.The use of any trade name in this article does not imply an endorsement of the equipment, product or process named, nor any criticism of any similar products that are not mentioned. AbstractGranier style thermal dissipation probes (TDPs) have been used to estimate whole plant water use on a variety of tree and vine species. However, studies using TDPs and load cells (gravimetric water loss) to estimate water use of landscape tree species are rare. This research compared gravimetric water loss (estimated with load cells) of four containerized landscape tree species with water loss estimated with TDPs. Over a 66 day period, an experiment compared water loss of three established, 5.0 cm (2 in) caliper poplar (Populus nigra 'Italica') trees in 75-liter (20 gal) containers on load cells to TDP estimated water loss. Each tree had a single 30 mm (1.2 inch) TDP inserted into the trunk at four heights above soil level (15, 30, 45, and 60 cm (6, 12, 18, and 24 in, respectively)). Data revealed TDP estimated water loss was less than load cell estimated water loss regardless of TDP height, but TDP estimated water loss at the 30 cm height was closest to actual load cell estimated tree water loss. Over the next three years, similar sized Bradford pear (Pyrus calleryana 'Bradford'), English oak (Quercus robur x Q. bicolor 'Asjes'), poplar (Populus deltoides 'Siouxland'), and sweetgum (Liquidambar styraciflua 'Rotundiloba') trees in containers were placed on load cells and one 30 mm TDP was placed into the trunk of each tree 30 cm above soil level. Over an extended time period, tree water loss was estimated using load cells and TDPs. Hourly TDP water loss estimates for each species over a three day period indicate TDP estimated water loss followed similar trends as load cell estimated water loss. However, TDP estimates were generally less than load cell estimates, especially during peak transpiration periods. For each species, mean total daily water loss estimates were less for TDP estimated water loss when compared to load cell estimated water loss. Although TDP estimated water loss has been correlated with actual tree water loss for many species, these data suggest errors may arise when using TDPs to estimate water loss of small, containerized landscape tree species.Index words: irrigation, container production, tree water use, poplar, Bradford pear, English oak, sweetgum. Species used in this study Significance to the Nursery IndustryBecause water quality and quantity are concerns in many regions of the United States, conserving water in nurseries and landscapes is essential. However, little research has been conducted into estimating tree water use in nurseries or landscape settings. We investigated methods to estimate water loss of four containerized landscape tree species ('...

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“…Passive methods of oxygen delivery are suggested to keep costs of phytoremediation low. These methods include the use of include the use of perforated aeration tubes placed next to cuttings that can supply oxygen to roots along a vertical axis (Ferro et al, 2001). Perforated ADS (Adsorption) tubing that are placed at depth prior backfilling the planting trench provides oxygen on a horizontal plane.…”

Section: Oxygen Requirementsmentioning

confidence: 99%