Switchgrass (<i>Panicum virgatum</i> L.) Cultivar Adaptation, Biomass Production, and Cellulose Concentration as Affected by Latitude of Origin

Jefferson, P. G.; McCaughey, W. P.

doi:10.5402/2012/763046

Cited by 11 publications

(9 citation statements)

References 16 publications

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“…This might indicate that SG responded better to favorable conditions compared to BBS. Similarly to our results, Jefferson [55] reported greater yield potential for SG across a latitudinal gradient compared to other species. However, the differences in yields among mixtures were not significant.…”

Section: Mixture Composition and Yieldssupporting

confidence: 90%

Influence of Species Composition and Management on Biomass Production in Missouri

et al. 2020

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Perennial biofuel crops help to reduce both dependence on fossil fuels and greenhouse gas emissions while utilizing nutrients more efficiently compared to annual crops. In addition, perennial crops grown for biofuels have the potential to produce high biomass yields, are capable of increased carbon sequestration, and are beneficial for reducing soil erosion. Various monocultures and mixtures of perennial grasses and forbs can be established to achieve these benefits. The objective of this study was to quantify the effects of feedstock mixture and cutting height on yields. The base feedstock treatments included a monoculture of switchgrass (SG) and a switchgrass:big bluestem 1:1 mixture (SGBBS). Other treatments included mixtures of the base feedstock with ratios of base to native forbs plus legumes of 100:0, 80:20, 60:40, and 20:80. The study was established in 2008. Biomass crops typically require 2 to 3 years to produce a uniform stand. Therefore, harvest data were collected from July 2010 to July 2013. Three harvest times were selected to represent (1) biomass for biofuel (March), (2) forage (July), and (3) forage and biomass (October). Annual mean yields varied between 4.97 Mg ha−1 in 2010 to 5.56 Mg ha−1 in 2011. However, the lowest yield of 2.82 Mg ha−1 in March and the highest yield of 7.18 Mg ha−1 in July were harvested in 2013. The mean yield was 5.21 Mg ha−1 during the 4 year study. The effect of species mixture was not significant on yield. The cutting height was significant (p < 0.001), with greater yield for the 15 cm compared to the 30 cm cutting height. Yield differences were larger between harvest times during the early phase of the study. Yield difference within a harvest time was not significant for 3 of the 10 harvests. Future studies should examine changes in biomass production for mixture composition with time for selection of optimal regional specific species mixtures.

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Section: Mixture Composition and Yieldssupporting

confidence: 90%

Influence of Species Composition and Management on Biomass Production in Missouri

et al. 2020

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“…This result reveals that plants tend to show optimal growth performance near where they have been established and persisted. Similar results have been reported by Jefferson and McCaughey [48] who reported that latitude of origin of a switchgrass ecotype was positively correlated to biomass production.…”

Section: Discussionsupporting

confidence: 79%

Adaptation of C4 Bioenergy Crop Species to Various Environments within the Southern Great Plains of USA

et al. 2017

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Abstract:As highly productive perennial grasses are evaluated as bioenergy feedstocks, a major consideration is biomass yield stability. Two experiments were conducted to examine some aspects of yield stability for two biofuel species: switchgrass (Panicum vigratum L.) and Miscanthus x giganteus (Mxg). Biomass yields of these species were evaluated under various environmental conditions across the Southern Great Plains (SGP), including some sites with low soil fertility. In the first experiment, measured yields of four switchgrass ecotypes and Mxg varied among locations. Overall, plants showed optimal growth performance in study sites close to their geographical origins. Lowland switchgrass ecotypes and Mxg yields simulated by the ALMANAC model showed reasonable agreement with the measured yields across all study locations, while the simulated yields of upland switchgrass ecotypes were overestimated in northern locations. In the second experiment, examination of different N fertilizer rates revealed switchgrass yield increases over the range of 0, 80, or 160 kg N ha −1 year −1 , while Mxg only showed yield increases between the low and medium N rates. This provides useful insights to crop management of two biofuel species and to enhance the predictive accuracy of process-based models, which are critical for developing bioenergy market systems in the SGP.

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“…Growth rate, photoperiodism, heat, and cold or freezing tolerance regulate adaptation of SWG populations (Casler et al 2007). The latitude of origin has a large impact on SWG yield potential and ability to survive in extreme environment (Castler et al 2007;Jefferson & McCaughey 2012). In general, SWG varieties grown too far north (from the latitude of origin) will not flower or will flower later and will not mature before onset of winter.…”

Section: Introductionmentioning

confidence: 99%

Switchgrass from North Dakota – an adaptable and promising energy crop for northern regions of Europe

Lemežienė

Norkevičienė

Liatukas

et al. 2014

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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Searching for novel energy crops, an interest in C4-type plant switchgrass (SWG) has increased worldwide. The present research was aimed to study SWG genetic resources for most important agrobiological traits with a view of extending the range of energy plants in the Nemoral zone of Europe. SWG was studied for the peculiarities of developmental stages, winter hardiness, and dry matter (DM) yield. SWG regrowth in spring started one month later compared to the reed canary grass (variety 'Chiefton'). All investigated genotypes matured seeds in the second half of September. The most winter-hardy SWG accessions (0-20% winter damage) were the majority of wild ecotypes and the variety 'Dacotah' from North Dakota (2-4 hardiness zone) as well as the variety 'Summer' from South Nebraska (4, 5 hardiness zone). Ecotypes from North Dakota exhibited a high breeding potential and prospects in Northern regions of Europe due to genotypic variation of winter hardiness trait. The varieties 'Alamo', 'Falcon', 'Grenville', 'Shawnee', and 'Trailblazer' that originated from warmer climate zones (6-9 hardiness zone) were heavily damaged or completely killed. The worst overwinter survival of plants was recorded after the first winter. DM yield was estimated at two regimens of cutting. When grass was cut once at seed maturity stage, DM yield in the first harvest year was 249 g per plant, in the second harvest year 349 g per plant, and in the third harvest year 493 g per plant. When grass was cut twice per season (at the beginning of anthesis and after regrowth of aftermath), DM yield was significantly lower: in the first harvest year the DM yield was 203 g per plant (18.4% less), in the second harvest year 182 g per plant (47.9% less), and in the third harvest year 272 g per plant (44.7% less).

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Switchgrass (Panicum virgatum L.) Cultivar Adaptation, Biomass Production, and Cellulose Concentration as Affected by Latitude of Origin

Cited by 11 publications

References 16 publications

Influence of Species Composition and Management on Biomass Production in Missouri

Influence of Species Composition and Management on Biomass Production in Missouri

Adaptation of C4 Bioenergy Crop Species to Various Environments within the Southern Great Plains of USA

Switchgrass from North Dakota – an adaptable and promising energy crop for northern regions of Europe

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