Switchgrass impact on selected soil parameters, including soil organic carbon, within six years of establishment

Lai, Liming; Kumar, Sandeep; Osborne, Shannon L.; Owens, Vance N.

doi:10.1016/j.catena.2017.12.030

Cited by 23 publications

(27 citation statements)

References 49 publications

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“…Significant changes in the soil hydrological properties in response to the treatments were observed. Soil organic carbon was not impacted by the N rates but impacted by the landscape position (higher value observed at footslope compared to the shoulder) in 2009 (Lai et al, ), however, it was higher with the high N rate, and footslope position compared to that under low N rate, in 2016 (data not shown). The impacts of N rates and landscape position on soil C fractions and hydrological properties have been discussed below as:…”

Section: Discussionmentioning

confidence: 93%

“…L.) rotation prior to switchgrass establishment. The mean values of SOC under high and low N rates were 24.5 and 26.1 g/kg, at 0–5 cm depth, respectively, in 2009 (Lai et al, ).…”

Section: Methodsmentioning

confidence: 99%

“…The production of switchgrass has been increased over the past few decades due to the economic benefits, thus, there is strong need to assess the ecological impacts associated with its production in the United States (Hartman, Nippert, Orozco, & Springer, 2011). Studies have shown that switchgrass production can improve soils and environmental quality (e.g., Lai, Kumar, Osborne, & Owens, 2018) with low on-farm energy requirements and costs (Wright, Perlack, Turhollow, & Eaton, 2011). Switchgrass has prolific and deep root system that can add organic carbon to the soil, reduce soil bulk density (ρ b ), and improve water infiltration rate compared with the row crop annuals (Kahle, Hildebrand, Baum, & Boelcke, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Soil hydrological properties as influenced by long‐term nitrogen application and landscape positions under switchgrass seeded to a marginal cropland

et al. 2019

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Switchgrass (Panicum virgatum L.) has the potential to recover the soil hydrological properties of marginal lands. Nitrogen (N) and landscape position are the key factors in impacting these soil properties under switchgrass. The specific objective of this study was to investigate the responses of N rate (low, 0 kg N/ha and high, 112 kg N/ha) and landscape positions (shoulder and footslope) on near‐surface soil hydrological properties that included: infiltration rate (qs), saturated hydraulic conductivity (Ksat), bulk density (ρb), penetration resistance (SPR), water retention (SWR), pore‐size distribution (PSD), and carbon (C) and nitrogen (N) fractions under switchgrass production. Data showed that, in general, the N and landscape position significantly influenced soil hydrological properties. Higher N rate decreased ρb (1.23 and 1.36 g/cm3 at 0–5 and 5–15 cm, respectively) and SPR (1.06 and 1.53 MPa at 0–5 and 5–15 cm, respectively) at both depths and increased the qs, Ksat and Green–Ampt estimated sorptivity (S) and hydraulic conductivity (Ks) parameters, and SWR (0–5 cm depth) at 0 and −0.4 kPa matric potentials (ψm). Furthermore, footslope position significantly decreased ρb, SPR at 0–5 and 5–15 cm depths, and increased the qs, Ksat, S, Ks, and SWR (0–5 cm depth) at every ψm ranged from 0 to −30.0 kPa. The higher N rate increased the coarse mesopores (60–1,000 μm) and total pores, whereas, footslope position increased the coarse mesopores, micropores (<60 μm), and total pores. Data from this study showed that planting switchgrass with 112 kg N/ha under footslope position helped in improving the soil hydrological properties, those can be beneficial in enhancing the biomass yield under marginal lands.

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Section: Discussionmentioning

confidence: 93%

“…L.) rotation prior to switchgrass establishment. The mean values of SOC under high and low N rates were 24.5 and 26.1 g/kg, at 0–5 cm depth, respectively, in 2009 (Lai et al, ).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil hydrological properties as influenced by long‐term nitrogen application and landscape positions under switchgrass seeded to a marginal cropland

et al. 2019

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“…In another study, both inorganic and manure N fertilizations can improve SOC sequestration capacity in SG croplands [15], which is associated with elevated shoot and root biomass [22]. In other studies, N fertilizations, however, show no significant effects on SOC pools in a soil profile (0-100cm) at a fertilization rate between 0 and 220 kg N ha -1 yr -1 [17,23,24]. A similar conclusion was reached in a fertilization experiment of short-term period of 2-3 years after SG establishment [20].…”

Section: Introductionmentioning

confidence: 88%

Effects of nitrogen fertilization and bioenergy crop type on topsoil organic carbon and total Nitrogen contents in middle Tennessee USA

Jian

Lane

et al. 2020

PLoS ONE

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Nitrogen (N) fertilization affects bioenergy crop growth and productivity and consequently carbon (C) and N contents in soil, it however remains unclear whether N fertilization and crop type individually or interactively influence soil organic carbon (SOC) and total N (TN). In a three-year long fertilization experiment in switchgrass (SG: Panicum virgatum L.) and gamagrass (GG: Tripsacum dactyloides L.) croplands in Middle Tennessee USA, soil samples (0-15cm) were collected in plots with no N input (NN), low N input (LN: 84 kg N ha-1 yr-1 in urea) and high N input (HN: 168 kg N ha-1 yr-1 in urea). Besides SOC and TN, the aboveground plant biomass was also quantified. In addition to a summary of published root morphology data based on a separated mesocosm experiment, the root leachable dissolved organic matter (DOM) of both crops was also measured using archived samples. Results showed no significant interaction of N fertilization and crop type on SOC, TN or plant aboveground biomass (ABG). Relative to NN, HN (not LN) significantly increased SOC and TN in both crops. Though SG showed a 15-68% significantly higher ABG than GG, GG showed a 9.3-12% significantly higher SOC and TN than SG. The positive linear relationships of SOC or TN with ABG were identified for SG. However, GG showed structurally more complex and less readily decomposed root DOM, a larger root volume, total root length and surface area than SG. Collectively, these suggested that intensive N fertilization could increase C and N stocks in bioenergy cropland soils but these effects may be more likely mediated by the aboveground biomass in SG and root chemistry and morphology in GG. Future studies are expected to examine the root characteristics in different bioenergy croplands under the field fertilization experiment.

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“…Визначено, що вміст важких металів у ґрунті з роками дослідження знижується. Доведено також ефективність енергетичних культур за багаторічного циклу вирощування в накопиченні на поверхні ґрунту мульчуючого шару та збагаченні його на вміст органічної речовини (Meers et al, 2010;Lai et al, 2018).…”

Section: теоретичні дослідження та їх обговоренняunclassified

Phytoremediation aspects of energy crops use in Ukraine

Kulyk¹,

Galytska²,

Samoylik³

et al. 2019

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Today clearing of contaminated soils from heavy metals, pesticide residues is very important problem for Ukraine. Soil pollution is considered to be the result of the functioning of metallurgical and chemical industrial enterprises, as well as the irrational application of chemical plant protection means in the agricultural sector. The range of such preparations as well as the areas of contaminated soils are increasing every year. Phytoremediation with the help of herbaceous plants is one of the most effective methods of decontamination. This list of plants should be supplemented by perennial energy crops, taking into account the absorbing powers of their root system. The basis for preparing the material was the multiple scientific literary sources of domestic and foreign scientists on an investigated theme, the workingout of relevant techniques and scientific and practical recommendations. We applied both general scientific methods (dialectics, analysis and synthesis) and special ones for conducting of analytical review of literature. The largest area of soil in Ukraine is contaminated with cobalt, molybdenum, and copper, whose content exceeds not only the background values but also the maximum permissible concentrations (MPC). It has been defined that the intensity of heavy metals transition in the system "soil-plant" of the energy crops has the following form Cd→Cu→Zn→Pb. Perennial energy crops are capable to create quickly an above ground phytomass and to form an aggressive root system that enables them to accumulate heavy metals from the soil. They can be new and important plants for phytoremediation. At the same time, the energy crops are allocated in accordance with agroclimatic zoning taking into account plant responses to the growing conditions and also applying the scheme of soil remediation from heavy metals. It has been established that energy crops (Switchgrass and Silvergrass) are Hyperaccumulators. They actively absorb heavy metals and partialy accumulate them in their underground and above ground parts. Silvergrass (Miscanthus giganteus) provides higher yield than switchgrass (Panicum virgatum), though switchgrass has less dry matter content, higher accumulation of heavy metals in plant phytomass but the maximum permissible concentration is lower than regulated standards. Silvergrass (Miscanthus giganteus) provides higher yield than switchgrass (Panicum virgatum), though switchgrass has less dry matter content, higher accumulation of heavy metals in plant phytomass and maximum permissible concentration is lower than regulated standards. On termination of the vegetation, the above-ground vegetative mass of these plants can undergo to proper processing that is an additional source of nonferrous metals or biofuel production for energy purposes.

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Switchgrass impact on selected soil parameters, including soil organic carbon, within six years of establishment

Cited by 23 publications

References 49 publications

Soil hydrological properties as influenced by long‐term nitrogen application and landscape positions under switchgrass seeded to a marginal cropland

Soil hydrological properties as influenced by long‐term nitrogen application and landscape positions under switchgrass seeded to a marginal cropland

Effects of nitrogen fertilization and bioenergy crop type on topsoil organic carbon and total Nitrogen contents in middle Tennessee USA

Phytoremediation aspects of energy crops use in Ukraine

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