Evaluation of the nutrient content in biomass of Eucalyptus species from short rotation plantations in Uruguay

Resquín, Fernando; Navarro-Cerrillo, Rafael M.; Carrasco-Letelier, Leónidas; Rachid-Casnati, Cecilia; Bentancor, Luis

doi:10.1016/j.biombioe.2020.105502

Cited by 24 publications

(12 citation statements)

References 41 publications

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“…Most nutrients are found in barks and leaves, suggesting that the best harvesting practice involves thinning and cleaning the logs at the planting site (RESQUIN et al, 2020). The removal of a portion of these residues does not compromise the nutrient stock in the soil (ROCHA et al, 2016), which is in accordance with (NÚÑEZ-REGUEIRA, 2004) where it is…”

Section: Introductionsupporting

confidence: 68%

Characterization of residual biomass from the harvest of Eucalyptus saligna for thermal conversion processes

Silveira

Dorneles

Sebben

et al. 2020

REGET

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Considering the increasing need for renewable products, the present work aims to evaluate the physical-chemical properties of the eucalyptus harvest residues and its constituent fractions individually (barks, leaves, and branches), through proximate, ultimate, energetic and thermal analyzes. The biomass studied was Eucalyptus saligna species, cultivated mainly for the production of pulp and paper. The proximate analysis of the residue resulted in the moisture content of 10.1%, ash content of 3.9%, volatile materials about 81.1%, and fixed carbon of 15.0%, showing similar values to the constituent fractions. The ultimate analysis of the residue resulted in 46.5% of carbon content, 5.8% of hydrogen, and 43.2% of oxygen. The high heating value (HHV) for the residue is 17.93 MJ/kg, comparable to other biomasses of importance, including eucalyptus wood, the noblest part of the forest cultivation. The thermogravimetric (TGA) and differential thermal analysis (DTA) were carried out and the resulting thermograms show three main ranges of biomass degradation. The first range, from 30 to 150 °C, corresponds to the drying of the material; in the range from 200 to 325 °C hemicelluloses degrade, with partial degradation of lignin and cellulose, and in the range from 325 to 380 °C, the majority of cellulose degradation takes place. The physical-chemical data demonstrate that the eucalyptus residue is an excellent source of biomass for thermal conversion processes. Obtaining products with higher added value from this residue contributes to the implementation of new technological practices that link economic development to environmental responsibility.

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Section: Introductionsupporting

confidence: 68%

Characterization of residual biomass from the harvest of Eucalyptus saligna for thermal conversion processes

Silveira

Dorneles

Sebben

et al. 2020

REGET

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“…The rate of nutrient exportation is very high, reaching 33.6 ha −1 year −1 of N, 1.15 of P, 13.8 of K, 15.5 of Ca, and 5.8 kg of Mg [58]. Different systems harvest (e.g., stemwood, stemwood without debarking, and full-tree) shows an increase of nutrient exported levels with harvest intensification [59].…”

Section: Discussionmentioning

confidence: 99%

Modeling Biomass and Nutrients in a Eucalyptus Stand in the Cerrado

Valadão

Carneiro

Ribeiro

et al. 2020

Forests

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The prediction of biological processes, which involve growth and plant development, is possible via the adjustment of mathematical models. In forest areas, these models assist in management practices, silviculture, harvesting, and soil fertility. Diameter, basal area, and height are predictors of volume and biomass estimates in forest stands. This study utilized different non-linear models for estimating biomass and nutrient values in the aerial biomass and roots of an unmanaged eucalypt stand in Cerrado dystrophic soil. It was hypothesized that the models would estimate the nutrients of the aboveground biomass and roots after meeting the selection and validation criteria. By statistical analysis of the parameters and subsequent validation, the Schumacher–Hall model was presented to be the best fit for biomass and nutrients. This result confirmed the ability of different variables, including diameter, basal area, and height, to be predicted. Estimating the nutrient values in the aboveground biomass and roots allowed a better understanding of the quality of the vegetal residues that remained in the soil. For dystrophic soils, which occur in the Cerrado, these estimates become even more relevant.

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“…In general, the results confirm the hypothesis that the NUE of the leaves would be very similar for genotypes. There is a broad consensus that the concentration of nutrients in Eucalyptus genus follows the order of leaves > bark > branches > wood (Resquin et al, 2020). Although wood nutrients are a smaller fraction, they are important in the nutrient cycling and in the balance of nutrients for the Eucalyptus stand (especially for P, S, B, Cu, Fe and Zn).…”

Section: Resultsmentioning

confidence: 99%

Nutrient-use efficiency of Eucalyptus genotypes grown in Luvisol

Santos¹,

Queiroz²,

Ludvichak³

et al. 2021

Rev. ambiente água

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Superior productivity of genotypes in forest plantations depends on the supply, capture and use-efficiency of resources. In this context, knowledge regarding the nutritional efficiency of Eucalyptus influences farmers and researchers in decision-making and in the management of forest ecosystems. The aim of this research was to estimate nutrient-use efficiency in Eucalyptus genotypes planted in the state of Rio Grande do Sul, Brazil. We evaluated six potential genotypes at 43-month-old stands. Nutrient-use efficiency was calculated using the ratio of biomass and the amount of nutrients for each component of the biomass. Results here presented confirmed that there is synergism and antagonism between nutrients at the shoot level in the Eucalyptus genotypes. For stemwood, E. saligna showed the best utilization efficiency of N, P, K, S, and Mn; and E. urophylla × E. globulus for Mg, B, and Zn. Metabolic pathways control the production of biomass synthesized by each genotype and the differences between genotypes groups were on the basis of their nutrient-use efficiency in the biomass components. Stemwood was the component that showed the highest nutrient-use efficiency, while leaves presented the lowest nutrient-use efficiency. Additionally, our analyses identified how different each Eucalyptus genotype is and these traits may be used for clone allocation according to soil fertility.

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Evaluation of the nutrient content in biomass of Eucalyptus species from short rotation plantations in Uruguay

Cited by 24 publications

References 41 publications

Characterization of residual biomass from the harvest of Eucalyptus saligna for thermal conversion processes

Characterization of residual biomass from the harvest of Eucalyptus saligna for thermal conversion processes

Modeling Biomass and Nutrients in a Eucalyptus Stand in the Cerrado

Nutrient-use efficiency of Eucalyptus genotypes grown in Luvisol

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