Influence of cutting height on biomass yield and quality of miscanthus genotypes

Magenau, Elena; Kiesel, Andreas; Clifton‐Brown, John; Lewandowski, Iris

doi:10.1111/gcbb.12881

Cited by 14 publications

(18 citation statements)

References 63 publications

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“…Although we cannot exclude site-specific effects of nutrient availability on N and K content, there is a clear trend towards higher contents in the crop of later-ripening hybrids (M sac × sin) that remain in autumn at colder sites (fewer degree days). Similar to other studies (Bilandzija et al, Iqbal & Lewandowski, 2014;Magenau et al, 2021), we did not find that leaching has an effect on the nutrient content.…”

Section: Senescence and Translocation Of Nutrientssupporting

confidence: 92%

“…Those yields were obtained with the same scientific protocol. Actual biomass yields in conventional harvest systems are likely to be approximately 10.0%-14.4% lower due to a generally 10-15 cm higher stubble height (Magenau et al, 2021). Furthermore, harvest losses are higher due to swath drying prior to baling or wind blow of direct chipped biomass during filling of trailers.…”

Section: Yield and Nutrient Contents In Spring After Winter Ripeningmentioning

confidence: 99%

“…Harvest approach and timing are critical for sustainability criteria [e.g. cutting height (Magenau et al, 2021)]. The miscanthus production cycle (for established Miscanthus × giganteus [ M × g ], M. sacchariflorus × sinensis [ M sac × sin ], and M. sinensis × sinensis [ M sin × sin ] in Europe) starts with shoots emerging from overwintering rhizomes in spring (mid‐February to mid‐May, depending on latitude).…”

Section: Introductionmentioning

confidence: 99%

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Site impacts nutrient translocation efficiency in intraspecies and interspecies miscanthus hybrids on marginal lands

et al. 2022

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Miscanthus, a C4 perennial rhizomatous grass, is capable of growing in varied climates and soil types in Europe, including on marginal lands. It can produce high yields with low nutrient inputs when harvested after complete senescence. Senescence induction and rate depend on complex genetic, environmental, and management interactions. To explore these interactions, we analysed four miscanthus hybrids (two novel seed‐based hybrids, GRC 3 [Miscanthus sinensis × sinensis] and GRC 14 [M. sacchariflorus × sinensis]; GRC 15, a novel M. sacchariflorus × sinensis clone; and GRC 9, a standard Miscanthus × giganteus clone) in Italy, Croatia, Germany and the UK. Over all trial locations and hybrids, the average aboveground biomass of the 3‐year‐old stands in August 2020 was 15 t DM ha−1 with nutrient contents of 7.6 mg N g−1 and 14.6 mg K g−1. As expected, delaying the harvest until spring reduced overall yield and nutrient contents (12 t DM ha−1, 3.3 mg N g−1, and 5.5 mg K g−1). At lower latitudes, the late‐ripening M. sacchariflorus × sinensis GRC 14 and GRC 15 combined high yields with low nutrient contents. At the most elevated latitude location (UK), the early‐ripening M. sinensis × sinensis combined high biomass yields with low nutrient offtakes. The clonal Miscanthus × giganteus with intermediate flowering and senescence attained similar low nutrient contents by spring harvest at all four locations. Seasonal changes in yield and nutrient levels analysed in this study provide: (1) a first step towards recommending hybrids for specific locations and end uses in Europe; (2) crucial data for determination of harvest time and practical steps in the valorization of biomass; and (3) key sustainability data for life cycle assessments. Identification of trade‐offs resulting from genetic × environment × management interactions is critical for increasing sustainable biomass supply from miscanthus grown on marginal lands.

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Section: Senescence and Translocation Of Nutrientssupporting

confidence: 92%

Section: Yield and Nutrient Contents In Spring After Winter Ripeningmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Site impacts nutrient translocation efficiency in intraspecies and interspecies miscanthus hybrids on marginal lands

et al. 2022

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“…Dedicated biomass crops, such as M. × giganteus, should embody several characteristics including efficient use of available resources and a consequent requirement for few inputs [1]. It can produce high biomass yields and is well adapted to a wide range of marginal land types less suitable for food production [2]. Field studies of M. × giganteus the known phenomenon of ion antagonism between these elements, increasing K content correlated with an increase in Mg accumulation in the plants [21].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Dynamics of Dry Matter Accumulation and Nutrients in a Mature Miscanthus × giganteus Stand in the Lower Silesia Region of Poland

Mos

Robson

Buckby³

et al. 2021

Agronomy

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Biomass from M. × giganteus has great promise for use within the bioeconomy sectors, but to maximise environmental benefits, crops must produce high yields while minimising energetically costly inputs. Complex interactions between soil conditions, climatic variations, plant maturity and genotype influence yields and nutrient dynamics, which in turn impacts crop sustainability. To investigate the flux of growth and nutrients in response to a changing environment, M. × giganteus was grown in southwest Poland and sampled monthly (June–November) from 2010 to 2012. Measurements examined the interaction between plant growth and leaf development, and nutrient (N, P, K, Ca and Mg) concentrations of rhizomes, stems and leaves. The three growth years studied were markedly different for growth and meteorological conditions. Between 2010 and 2011, above ground biomass yield increased significantly from 16.5 ± 0.4 t ha−1 to 20.1 ± 0.5 t ha−1. The 2012 rhizome weights at the beginning of the growth season were halved due to extreme frost; however, resulting yield was similar (19.9 ± 0.6 5 t ha−1). Final yield from all three years were successfully predicted using MISCANFOR, and modelling indicated crop yield was water-limited. The seasonal flux of N and K from rhizome to stems and leaves then back to the rhizome at the onset of senescence was as expected in 2010 and 2011. In 2012, no such trend was evident especially for N suggesting different macronutrient sources from rhizome and soil improves the resilience of perennial crop yield across a range of diverse growth conditions.

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“…In stubble harvesting machinery, the cutting type are classified according to the support method: supported cutting and unsupported cutting [16][17][18]. There are few relevant studies for the C.k.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Experiment of Cutting Mechanical Parameters for Caragana korshinskii (C.k.) Branches

Gao

Kang

Kan

et al. 2021

Forests

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In order to investigate the cutting mechanical characteristics of Caragana Korshinskii (C.K.) branches and explore the optimal combination of cutting parameters to support the subsequent equipment development, this paper explores the relationship between branch diameter D, average cutting speed v, wedge angle β, slip cutting angle α, cutting height h, cutting gap t, moisture content M and peak cutting force by using a homemade swing-cut branch cutting test bench with peak cutting force of branches as the target value under unsupported and supported cutting methods, respectively, through single-factor tests. Based on the single-factor test, v, β, α and t were selected as the test factors, and a multi-factor test was conducted with the peak cutting force as the target. Test result: The best combination of unsupported cutting in the range of multi-factor test is v for 3.315 m·s−1, β for 20°, α for 20°, when the peak cutting force is 95.690 N. Supported cutting multi-factor test range to get the best combination of v for 3.36 m·s−1, β for 20°, α for 20°, t for 1.38 mm, when the peak cutting force is 53.082 N. The errors of the predicted peak cutting force and the measured peak cutting force of the obtained model were 1.3% and 3.9%, respectively, which prove that the cutting parameters were optimized reliably. This research can provide a theoretical basis for subsequent development the C.K. harvesting equipment.

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Influence of cutting height on biomass yield and quality of miscanthus genotypes

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 14 publications

References 63 publications

Site impacts nutrient translocation efficiency in intraspecies and interspecies miscanthus hybrids on marginal lands

Site impacts nutrient translocation efficiency in intraspecies and interspecies miscanthus hybrids on marginal lands

Seasonal Dynamics of Dry Matter Accumulation and Nutrients in a Mature Miscanthus × giganteus Stand in the Lower Silesia Region of Poland

Analysis and Experiment of Cutting Mechanical Parameters for Caragana korshinskii (C.k.) Branches

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