The Potential of C<sub>4</sub>Perennial Grasses for Developing a Global BIOHEAT Industry

Samson, R.; Mani, Sudhagar; Boddey, Robert M.; Sokhansanj, Shahab; Quesada, Diego; Urquiaga, Segundo; Reis, Verônica Massena; Lem, Claudia Ho

doi:10.1080/07352680500316508

Cited by 208 publications

(161 citation statements)

References 105 publications

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“…Potassium removal may not have reflected biomass yields because apart from translocation of this nutrient to underground structures as the plant senescence during fall, K may be leached out of senescing material [3,31]. In this study, similar losses may have occurred in 2009 and 2010 due to significantly high rainfall in the months of September and October when senescence starts.…”

Section: Discussionmentioning

confidence: 54%

“…It is reported that switchgrass origin in low fertility soils has allowed it to develop adaptive and tolerance traits to low plant available P soils [30]. Switchgrass forms a symbiotic association with mycorrhizae fungi that improves P scavenging while its deep rooting system allows for access to subsoil P sources [31]. In fact, it is reported that switchgrass with mycorrhizal association had a 30-fold increased in P uptake compared to switchgrass without the fungal symbiont [23].…”

Section: Discussionmentioning

confidence: 98%

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Biomass Yield and Nutrient Responses of Switchgrass to Phosphorus Application

et al. 2012

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Increasing desire for renewable energy sources has increased research on biomass energy crops in marginal areas with low potential for food and fiber crop production. In this study, experiments were established on low phosphorus (P) soils in southern Oklahoma, USA to determine switchgrass biomass yield, nutrient concentrations, and nutrient removal responses to P and nitrogen (N) fertilizer application. Four P rates (0, 15, 30, and 45 kg Pha −1 ) and two N fertilizer rates (0 and 135 kg Nha −1 ) were evaluated at two locations (Ardmore and Waurika) for 3 years. While P fertilization had no effect on yield at Ardmore, application of 45 kg Pha −1 increased yield at Waurika by 17% from 10.5 to 12.3 Mg ha −1 . Across P fertilizer rates, N fertilizer application increased yields every year at both locations. In Ardmore, non-N-fertilized switchgrass produced 3.9, 6.7, and 8.8 Mg ha −1 , and N-fertilized produced 6.6, 15.7, and 16.6 Mg ha −1 in 2008, 2009, and 2010, respectively. At Waurika, corresponding yields were 7.9, 8.4, and 12.2 Mg ha −1 and 10.0, 12.1, and 15.9 Mg ha −1 . Applying 45 kg Pha −1 increased biomass N, and P concentration and N, P, potassium, and magnesium removal at both locations. Increased removal of nutrients with N fertilization was due to both increased biomass and biomass nutrient concentrations. In soils of generally low fertility and low plant available P, application of P fertilizer at 45 kg Pha −1 was beneficial for increasing biomass yields. Addition of N fertilizer improves stand establishment and biomass production on low P sites.

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Section: Discussionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 98%

Biomass Yield and Nutrient Responses of Switchgrass to Phosphorus Application

et al. 2012

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“…Essas herbáceas de alta produtividade são, geralmente, de ciclo fotossintético C4 que é aproximadamente 40% mais efi ciente para a captação de carbono que o mecanismo C3 das gramíneas mais comuns de clima temperado (SAMSON et al, 2005). No mundo, as principais espécies utilizadas são Panicum virgatum (Switchgrass), Phalaris arundinacea (Reed canary Grass), Miscanthus giganteus (E-grass), e pennisetum purpureum (Elephant Grass) conhecido no Brasil como capim-elefante (SMEETS et al, 2009).…”

Section: Quéno L M R Et Alunclassified

Custo de produção das biomassas de eucalipto e capim-elefante para energia

Quéno

Souza

Ângelo

et al. 2011

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RESUMO:Nesse estudo, objetivou-se estabelecer o custo de produção da unidade energética gerada pela biomassa do eucalipto (Eucalyptus sp.), em diferentes tratamentos silviculturais, e pela biomassa do capim-elefante (Pennisetum sp.), e aplicar uma análise de sensibilidade para verifi car as infl uências de fatores como o tratamento silvicultural do eucalipto, a produção volumétrica de cada espécie, o custo da terra e a taxa de juros nos custos de produção analisados. Foi demonstrado que o tratamento do eucalipto em plantio adensado e em curtíssima rotação de dois anos, com reforma do povoamento a cada seis anos, teve um custo médio de produção (CMPr) superior ao sistema convencional com rotação a cada seis anos e reforma aos 18. Observou-se, também, que o eucalipto apresenta, em média, um CMPr de R$ 4,41/Gj, inferior ao do capim-elefante, que, em média, é de R$ 5,44/Gj, mesmo com a capacidade que o último tem de produção anual superior de matéria seca. O capim-elefante tem a possibilidade de competir com o eucalipto quando um conjunto de condições se forma como taxa de juros igual ou superior a 8% a.a., preço da terra elevado e volume do capim-elefante igual ou acima de 35 toneladas de matéria seca por hectare por ano.Palavras-chave: Eucalyptus sp., Pennisetum sp., biomassa, bioenergia, custo médio de produção. PRODUCTION COST OF BIOMASSES FROM EUCALYPTUS AND ELEFANT GRASS FOR ENERGY ABSTRACT: This work established the unit energy cost generated from biomass of eucalyptus (Eucalyptus sp.) and elephant grass (Pennisetum sp.) and applied a sensitivity analysis to verify the infl uences of factors such as the silviculture of eucalyptus, production volume of each species, the cost of land and the interest rate. It was shown that the treatment of eucalyptus in very short rotation of 2 years with reform of stand every 6 years has a average cost of production higher than the traditional treatment of short rotation of 6 years with reform only at the age of 18. It was also observed that eucalyptus has a Production

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“…The briquetting process involves material collection, drying, commutation and densification, using various types of presses [43]. The resulting product is called briquettes and is easier to handle and has better combustion properties than the original biomass material.…”

Section: Briquetting Systemmentioning

confidence: 99%

Appraising Bioenergy Alternatives in Uganda Using Strengths, Weaknesses, Opportunities and Threats (SWOT)-Analytical Hierarchy Process (AHP) and a Desirability Functions Approach

et al. 2014

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Poor access to clean and reliable energy technologies is a major challenge to most developing countries. The decision to introduce new technologies is often faced by low adoption rates or even public opposition. In addition, the data required for effective decision making is often inadequate or even lacking, thus constraining the planning process. In this study, a methodology for participatory appraisal of technologies, integrating desirability functions to the strengths, weaknesses, opportunities and threats (SWOT)-analytical hierarchy process (AHP) methodology was developed. Application of the methodology was illustrated with an example for participatory appraisal of four bioenergy technologies in Uganda. Results showed that the methodology is effective in evaluating stakeholder preferences for bioenergy technologies. It showed a high potential to be used to identify and rate factors that stakeholders take into consideration when selecting bioenergy systems. The method could be used as a tool for technology screening, or reaching consensus in a participatory setup in a transparent manner.

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The Potential of C₄Perennial Grasses for Developing a Global BIOHEAT Industry

Cited by 208 publications

References 105 publications

Biomass Yield and Nutrient Responses of Switchgrass to Phosphorus Application

Biomass Yield and Nutrient Responses of Switchgrass to Phosphorus Application

Custo de produção das biomassas de eucalipto e capim-elefante para energia

Appraising Bioenergy Alternatives in Uganda Using Strengths, Weaknesses, Opportunities and Threats (SWOT)-Analytical Hierarchy Process (AHP) and a Desirability Functions Approach

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The Potential of C4Perennial Grasses for Developing a Global BIOHEAT Industry

Cited by 208 publications

References 105 publications

Biomass Yield and Nutrient Responses of Switchgrass to Phosphorus Application

Biomass Yield and Nutrient Responses of Switchgrass to Phosphorus Application

Custo de produção das biomassas de eucalipto e capim-elefante para energia

Appraising Bioenergy Alternatives in Uganda Using Strengths, Weaknesses, Opportunities and Threats (SWOT)-Analytical Hierarchy Process (AHP) and a Desirability Functions Approach

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The Potential of C₄Perennial Grasses for Developing a Global BIOHEAT Industry