Distribution of switchgrass (Panicum virgatum L.) aboveground biomass in response to nitrogen addition and across harvest dates

Miesel, Jessica R.; Jach-Smith, Laura C.; Renz, Mark; Jackson, Randall D.

doi:10.1016/j.biombioe.2017.03.012

Cited by 15 publications

(9 citation statements)

References 60 publications

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“…The NO 3 -N, TKN, and phosphate flow-weighted concentrations during post-fert 2 period (June 2015 to May 2016) were greater than corresponding concentrations during post-fert 1 period (June 2014 to May 2015) on IC and SG ( Table 2). The above trend in flow concentrations (post-fert 2 > post-fert 1) in IC and SG was likely due to the cumulative effect of the first fertilizer coupled with harvest residues mineralization [20][21][22]. Nitrogen loads in MP during post-fert for our study were lower than other fertilization studies [1], likely due to the effects of three back-to-back large storms right after fertilization as reported in one study [1].…”

Section: Drainage Water Nitrogen and Phosphorus Responses To Fertilizsupporting

confidence: 44%

Response of Drainage Water Quality to Fertilizer Applications on a Switchgrass Intercropped Coastal Pine Forest

Muwamba

Amatya

Chescheir

et al. 2020

Water

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The objectives of this study were (1) to test the hypothesis that fertilizer applications do not increase nutrient fluxes on a switchgrass/pine forest (IC) when compared to a mature pine forest (MP) and (2) to evaluate post-fertilization (post-fert, 2014–2016) fluxes of nitrogen (N) and phosphorus (P) on IC and compare them to those observed during switchgrass growth prior to fertilization (pre-fert, 2012–2014) and site preparation for switchgrass establishment (site prep, 2009–2012). Nitrogen and P were applied to IC, a paired pure switchgrass site (SG), and MP, each about 25 ha in size, in June 2014, and again in June 2015 for the IC and SG sites only. Nitrogen and P concentrations were measured biweekly and rainfall and drainage outflow were measured continuously. During post-fert, the mean N concentrations and total loads were lower (p < 0.05) in IC than in SG and MP. The mean NO3-N concentration and loads in IC were lower during post-fert than during site prep. The post-fert phosphate concentrations in IC were lower than they were during pre-fert and site prep. Frequent N and P applications in IC did not significantly (α = 0.05) increase N and P fluxes, likely due to plant uptake and sorption on the acidic site.

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Section: Drainage Water Nitrogen and Phosphorus Responses To Fertilizsupporting

confidence: 44%

Response of Drainage Water Quality to Fertilizer Applications on a Switchgrass Intercropped Coastal Pine Forest

Muwamba

Amatya

Chescheir

et al. 2020

Water

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“…Our statements agree with the conclusions of Vogel et al [20] and Lemus et al [21] that annual application of N fertilizers will increase switchgrass harvesting quality. Miesel et al [22] have investigated applying N and conclude that it will favor N accumulation in plants after its later growth stages and so improve crop productivity. The experiments performed by Carlsson et al [13] show that for nonfertilized high-diversity mixtures of energy crops the average biomass productivity was in the range 3-9 t ha −1 for several years.…”

Section: Discussionmentioning

confidence: 99%

Effect of cultivation technology on switchgrass (Panicum virgatum L.) productivity in marginal lands in Ukraine

et al. 2019

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Growing plants for biofuel production on marginal lands is of major importance in many developing countries. As a biomass source, switchgrass (<em>Panicum virgatum</em> L.) is a most adaptable plastic crop, forming extensive ground cover and vegetative biomass, providing a very high productivity over a short period of time. This study investigated the effects of cultivation (type of growing conditions and N fertilization rates) on biomass yields and changes in the structure of the switchgrass phytocenosis in different types of cropping systems. The biomass yields in stripe and mixed crops were higher than in single crops in the third year of cultivation. Switchgrass plants in intercrops were characterized by a greater height and number of shoots per unit area compared to mixed crops and monocultures. Biomass yields increased with each year of this research. The maximum biomass yields were attained with 30 kg ha<sup>−1</sup> of N fertilization and the minimum yields where there was no fertilization.

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“…Delaying harvest until after killing frost can result in significant reductions in tissue N, but additional significant reductions continue to occur during winter, even though active translocation has ceased [32,33]. Some of these winter losses occur through leaf loss as litter, some of which are retained in the field [34,35].…”

Section: Resultsmentioning

confidence: 99%

Nitrogen Demand Associated with Increased Biomass Yield of Switchgrass and Big Bluestem: Implications for Future Breeding Strategies

et al. 2019

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Development of perennial biomass cropping systems is focused on maximizing biomass yield with minimum inputs, particularly nitrogen (N) fertilizer. Historical breeding efforts have focused on increasing biomass yield but have ignored N-use efficiency. The purpose of this study was to quantify the increased N demand associated with realized gains in biomass yield from big bluestem (Andropogon gerardii Vitman) and switchgrass (Panicum virgatum L.) breeding programs. Nitrogen demand was highly variable across locations and years, ranging from − 1.7 to + 6.8 kg N Mg −1 DM, with an average of 2.2 kg N Mg −1 DM. Increases in N demand were closely associated with realized gains in biomass yield and were observed for all types of switchgrass (upland, lowland, and hybrid) as well as for big bluestem. Attenuation of these responses will require alternative breeding schemes that are focused on evaluation of switchgrass genotypes and progeny under low-N conditions and include a highthroughput tissue N analysis as a component of future selection criteria, designed to develop new cultivars with high biomass yield and low tissue N.

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Distribution of switchgrass (Panicum virgatum L.) aboveground biomass in response to nitrogen addition and across harvest dates

Cited by 15 publications

References 60 publications

Response of Drainage Water Quality to Fertilizer Applications on a Switchgrass Intercropped Coastal Pine Forest

Response of Drainage Water Quality to Fertilizer Applications on a Switchgrass Intercropped Coastal Pine Forest

Effect of cultivation technology on switchgrass (Panicum virgatum L.) productivity in marginal lands in Ukraine

Nitrogen Demand Associated with Increased Biomass Yield of Switchgrass and Big Bluestem: Implications for Future Breeding Strategies

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