Biomass yields for upland and lowland switchgrass varieties grown in the Mediterranean region

Alexopoulou, E.; Sharma, Nitesh Kumar; Papatheohari, Yolanda; Christou, M.; Piscioneri, I.; Panoutsou, Calliope; Pignatelli, V.

doi:10.1016/j.biombioe.2008.01.015

Cited by 84 publications

(57 citation statements)

References 12 publications

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“…No significant differences were observed between the two switchgrass varieties both in the pure and in the mixture stand. These findings concur with those reported by Alexopoulou et al (2008), who observed different yield potentials, among low-land and up-land varieties, just during the peak years and not in mature stands as in this case (switchgrass at the 6 th growth season). The intercropped alfalfa showed different behaviour between the two switchgrass varieties, probably due the different habit and growing cycle of Alamo, which negatively affected the alfalfa establishment compared with Blackwell.…”

Section: Discussionsupporting

confidence: 93%

“…In our experiment, the pure switchgrass was harvested four times per season (according to the management system adopted for the mixture stand) and it produced 9.3 Mg ha -1 of DM. Alexopoulou et al (2008) and Guretzky et al (2010) for single and double harvest, respectively, showed similar results, suggesting a constant productivity of switchgrass in the first year of a multi-harvest management. The abundant rainfall occurred during summer period led to a satisfactory regrowth of herbage and from the second harvest onwards alfalfa yielded more than switchgrass.…”

Section: Discussionsupporting

confidence: 53%

“…In particular some authors highlighted its suitability to the Mediterranean environment with yield from 5 to 20 Mg dry matter (DM) ha -1 yr -1 (Alexopoulou et al, 2008;Nassi o di Nasso et al, 2015). In particular, during the Mediterranean warm season, grasses have the potential to stabilise forage production, as hay or pasture, thus enhancing the production during the dry season (Gherbin et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Alfalfa (Medicago sativa L.) overseeding on mature switchgrass (Panicum virgatum L.) stand: biomass yield and nutritive value after the establishment year

et al. 2016

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Perennial crops can positively act on the environment providing a better inter-annual protection of soil cover from water erosion, limiting soil fertility degradation, the risk of nutrient leaching and the exploitation of water for irrigation. Switchgrass (Panicum virgatum L.), a warm-season grass native from North America, has been cultivated for decades as forage crop and only recently as bioenergy crop. Even if several studies reported a positive effect of nitrogen (N) supply on switchgrass yield and quality, potential indirect and direct environmental risks (e.g., eutrophication and greenhouse gas emission) are related to this practice. For this reason grass-legume intercropping can represent a sustainable practice able to increase biomass yield and quality, and at the same time to improve N use efficiency, soil structure and fertility. Based on this, the aim of this study was to evaluate the suitability of switchgrass to Mediterranean environment as forage crop and to improve biomass yield and its nutritional value by intercropping with alfalfa (Medicago sativa L). During spring 2013, in two switchgrass pure stands (varieties Alamo and Blackwell, respectively), alfalfa was established through direct seeding implementing a split-plot experimental design. Our first year results report a positive effect of the intercropping in increasing the total annual yield of the stand, of about 20% with respect to the pure switchgrass stand. However, the presence of alfalfa negatively affected switchgrass yield in the mixture. In both varieties, the crude protein content was higher in the mixture than in the pure switchgrass stands. Conversely, the neutral detergent fibre content in the mixture was lower than in pure switchgrass. Then, our results show that switchgrass-alfalfa intercropping leads to increase the profitability of grassland-based livestock production.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

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Alfalfa (Medicago sativa L.) overseeding on mature switchgrass (Panicum virgatum L.) stand: biomass yield and nutritive value after the establishment year

et al. 2016

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“…It has been used as a forage crop and for soil conservation, and was identified in the 1990s as a potential feedstock crop for the production of cellulosic biofuels [1,2]. High biomass yield (high net energy production per unit area), broad adaptability including in marginal areas, low production costs, low nutrient requirements, and high water use efficiency [1,3,4] are some of the beneficial attributes that favor switchgrass for bioenergy production.…”

Section: Introductionmentioning

confidence: 99%

Linkage Maps of Lowland and Upland Tetraploid Switchgrass Ecotypes

Serba

Daverdin

et al. 2013

Bioenerg. Res.

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Switchgrass (Panicum virgatum L.) is a native perennial warm season (C 4 ) grass that has been identified as a promising species for bioenergy research and production. Consequently, biomass yield and feedstock quality improvements are high priorities for switchgrass research. The objective of this study was to develop a switchgrass genetic linkage map using a full-sib pseudo-testcross mapping population derived from a cross between two heterozygous genotypes selected from the lowland cultivar 'Alamo' (AP13) and the upland cultivar 'Summer' (VS16). The female parent (AP13) map consists of 515 loci in 18 linkage groups (LGs) and spans 1,733 cM. The male parent (VS16) map arranges 363 loci in 17LGs and spans 1,508 cM. No obvious cause for the lack of one LG in VS16 could be identified. Comparative analyses between the AP13 and VS16 maps showed that the two major ecotypic classes of switchgrass have highly colinear maps with similar recombination rates, suggesting that chromosomal exchange between the two ecotypes should be able to occur freely. The AP13 and VS16 maps are also highly similar with respect to marker orders and recombination levels to previously published switchgrass maps. The genetic maps will be used to identify quantitative trait loci associated with biomass and quality traits. The AP13 Desalegn Serba, Limin Wu, and Guillaume Daverdin contributed equally to the work. Bioenerg. Res. (2013) 6:953-965 DOI 10.1007 genotype was used for the whole genome-sequencing project and the map will thus also provide a tool for the anchoring of the switchgrass genome assembly. Electronic supplementary material

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“…In addition, it was found to produce 500% more renewable energy than the nonrenewable energy that was consumed for its production and was estimated to have 94% less GHG emission than gasoline [126]. Trials were also conducted in other world parts, for example, 16 different upland and lowland varieties of switchgrass were evaluated over a 5 year period in different sites in Greece and Italy [132]. Overall, lowland varieties gave higher biomass yields with a mean over sites and years of 17000 kg/ha in Greece and 12000 kg/ha in Italy.…”

Section: Promising Bioethanol Producing Plantsmentioning

confidence: 99%

Biofuels Get in the Fast Lane: Developments in Plant Feedstock Production and Processing

Triantafyllidis¹

2013

Adv Crop Sci Tech

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In recent years, high volatility in oil prices and global climate change led to an increased interest in biofuel production to reduce dependency on foreign fossil fuel. Domestically produced plant feedstocks are environmentally friendly renewable substitutes for fossil-derived fuel and are expected to stabilize fuel prices. Plant-derived energy can offer rural development and other environmental, social and energy security benefits for local societies. Crops, grasses, trees, forest-residues and aquatic plants, all can be used as potential biofuel feedstocks. To meet the increased global and regional demand for bioenergy, evaluation and improvement of current and emergent plant feedstocks is urgently needed to reduce the cost of the resulting biofuels.

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Biomass yields for upland and lowland switchgrass varieties grown in the Mediterranean region

Cited by 84 publications

References 12 publications

Alfalfa (Medicago sativa L.) overseeding on mature switchgrass (Panicum virgatum L.) stand: biomass yield and nutritive value after the establishment year

Alfalfa (Medicago sativa L.) overseeding on mature switchgrass (Panicum virgatum L.) stand: biomass yield and nutritive value after the establishment year

Linkage Maps of Lowland and Upland Tetraploid Switchgrass Ecotypes

Biofuels Get in the Fast Lane: Developments in Plant Feedstock Production and Processing

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