Genotype influences survival and growth of eastern cottonwood (Populus deltoides L.) managed as a bioenergy feedstock on retired agricultural sites of the Lower Mississippi Alluvial Valley

Dipesh, K.C.; Blazier, Michael A.; Pelkki, Matthew H.; Liechty, Hal O.

doi:10.1007/s11056-016-9558-0

Cited by 6 publications

(2 citation statements)

References 35 publications

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“…Productivity depends on tree survival and health, particularly tree responses to predation, weed control, and disease [16,21,27,49]. Neither stand density (p = 0.3664), fertilization (p = 0.2341), nor their interactions (p > 0.117) were significant for survival, an outcome in agreement with Ghezehei et al [7] and in contrast to other studies [18,28,51,52]. However, survival was significantly affected by clones (p < 0.0001).…”

Section: Early Growth/productivity In Relation To the Incidence Of Pests And Diseasesupporting

confidence: 84%

Productivity and Profitability of Poplars on Fertile and Marginal Sandy Soils under Different Density and Fertilization Treatments

Ghezehei

Ewald

Hazel

et al. 2021

Forests

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We evaluated the productivity and profitability of four highly productive poplars including Populus deltoides × P. deltoides (DD ‘140’ and ‘356’), P. deltoides × P. maximowiczii (DM ‘230’), and P. trichocarpa × P. deltoides (TD ‘185’) under two densities (2500 and 5000 trees ha−1), and three fertilization treatments (0, 113, 225 kg nitrogen ha−1) at three sandy coastal sites varying in soil quality. Green stem biomass (GSB) was estimated from the sixth-year stem diameter. Leaf-rust (Melampsora castagne) and beetle damage (by Chrysomela scripta Fabricius), the leaf area index (LAI) and foliar nitrogen, were measured in year two. At all sites, DD and DM had higher survival (>93%) than TD (62–83%). DD produced greater GSB (92.5–219.1 Mg ha−1) than DM (54–60.2 Mg ha−1) and TD (16.5–48.9 Mg ha−1), and this was greater under the higher density (85.9–148.6 Mg ha−1 vs. 55.9–124.9 Mg ha−1). Fertilization significantly increased GSB on fertile soil but not marginal soils; a higher rate did not significantly enhance GSB. Leaf rust was higher for fertile soil (82%) than marginal soils (20–22%), and TD ‘185’ (51% vs. others 34%). C. scripta damage was higher for the higher density (+42%) than lower density, and TD ‘185’ (50% vs. others >38%). LAI was higher on fertile soil (1.85 m2 m−2) than marginal soils (1.35–1.64 m2 m−2), and under the lower density (1.67 m2 m−2 vs. 1.56 m2 m−2). The high GSB producer DD ‘356’ had the lowest LAI (1.39 m2 m−2 vs. 1.80 m2 m−2). Foliar nitrogen varied among genomic groups (DD ‘140’ 1.95%; TD ‘185’ 1.80%). Our plots were unprofitable at a 27 USD Mg−1 delivered price; the biggest profitability barriers were the high costs of higher density establishment and weed control. The best-case treatment combinations of DD (‘140’, ‘356’) would be cost-effective if the price increased by 50% (USD 37.54 Mg−1) or rotations were 12 years (fertile-soil) and longer (marginal soils). The requirement for cost-effectiveness of poplars includes stringent and site-specific weed control which are more important than fertilizer applications.

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Section: Early Growth/productivity In Relation To the Incidence Of Pests And Diseasesupporting

confidence: 84%

Productivity and Profitability of Poplars on Fertile and Marginal Sandy Soils under Different Density and Fertilization Treatments

Ghezehei

Ewald

Hazel

et al. 2021

Forests

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“…In order for SRWC production to be financially viable, sites should be capable of high productivity, located near processing refineries, or an economical source of transportation (Stoof et al, 2015) and should not compete with existing food production (Dipesh et al, 2017). These factors may restrict planting locations to sites with more limited water availability than prime agricultural land (Zalesny et al, 2016) and irrigation may not be feasible depending on costs and profit margins (Coyle et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Water Use, Efficiency, and Stomatal Sensitivity in Eastern Cottonwood and Hybrid Poplar Varietals on Contrasting Sites in the Southeastern United States

Renninger

Stewart

Rousseau

2021

Front. For. Glob. Change

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The southeastern United States has wide-scale potential to achieve high productivity from elite eastern cottonwood and hybrid poplar varietals to produce renewable bioenergy and bioproducts. In order to determine how environmental drivers impact water use and growth so that individuals can maintain growth during drought periods, varietals that use water efficiently, and/or tolerate water stress conditions, are needed to make planting recommendations across a variety of sites. Additionally, inoculation with nitrogen-fixing endophytic bacteria may improve water stress tolerance. The goals of this research were (1) to determine water use strategies using measurements of diurnal sapflow and differences in leaf retention for three eastern cottonwood (Populus deltoides, ST66, S7C8, and 110412) and three hybrid poplar (two P. deltoides × Populus maximowiczii, 6329 and 8019, and one Populus trichocarpa × P. deltoides, 5077) varietals on contrasting field sites, (2) determine the physiological impact of endophyte inoculation, and (3) determine which physiological parameters were most highly correlated with aboveground biomass. We found that whole-tree water use efficiency (WUE) was similar across varietals at 5.2 g biomass per kg water used and that water use scaled with tree size. We found that water use strategies in terms of scaled stomatal sensitivity to vapor pressure deficit converged across varietals under stressful soil water conditions at both sites, but that varietals 8019 and 110412 tended to exhibit the highest plasticity in stomatal sensitivity exhibiting the largest range in scaled stomatal sensitivity under different soil moisture conditions. Endophyte inoculation increased growth and stomatal sensitivity at the nitrogen-limited site. Leaf area, whole-tree WUE, and plasticity in stomatal sensitivity were correlated with aboveground biomass production across sites and varietals. Overall, these data can be used to model hydrologic impacts of large-scale Populus biofuel production as well as recommend varietals with efficient water use and stomatal sensitivity under a range of soil and atmospheric moisture stress factors.

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Comparison of thermal properties of the fast-growing tree species and energy crop species to be used as a renewable and energy-efficient resource

Zachar

Lieskovský

Majlingová

et al. 2018

J Therm Anal Calorim

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Genotype influences survival and growth of eastern cottonwood (Populus deltoides L.) managed as a bioenergy feedstock on retired agricultural sites of the Lower Mississippi Alluvial Valley

Cited by 6 publications

References 35 publications

Productivity and Profitability of Poplars on Fertile and Marginal Sandy Soils under Different Density and Fertilization Treatments

Productivity and Profitability of Poplars on Fertile and Marginal Sandy Soils under Different Density and Fertilization Treatments

Water Use, Efficiency, and Stomatal Sensitivity in Eastern Cottonwood and Hybrid Poplar Varietals on Contrasting Sites in the Southeastern United States

Comparison of thermal properties of the fast-growing tree species and energy crop species to be used as a renewable and energy-efficient resource

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