Implicações nutricionais com base em diferentes intensidades de colheita da biomassa de Eucalyptus urophylla x Eucalyptus globulus

Viera, Márcio; Schumacher, Mauro Valdir; Trüby, Peter; Araújo, Elias Frank de

doi:10.1590/0103-8478cr20120367

Cited by 12 publications

(22 citation statements)

References 6 publications

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“…In average terms, for the relative partition of the total biomass, the wood represents 66% of the tree biomass, and when considering only the aboveground biomass this condition rises to 76%. The distribution of the biomass between the respective components presented the same tendency being wood > root > branch > bark > leaf, which corresponds to the one verified by several authors [7,16,17,18]. .…”

Section: Biomass Productionsupporting

confidence: 86%

“…The biological utilization coefficient (BUC) was calculated through the quotient between the biomass and the nutrient quantity per tree component, both with the same unit [7].…”

Section: Experimental Design and Data Collectionmentioning

confidence: 99%

“…During the management of a forest stand, all factors influencing growth need to be considered in order to maximize the productive capacity of the site, and in this sense Viera et al [7] reiterates that the intensive management of eucalyptus plantations tends to increase the production and removal of nutrients from the system by the use of biomass, and that the distribution of nutrients in the components of the trees has great importance in the nutrition of forest stands managed in rotations successive. In addition, genotype selection based on its nutrient utilization efficiency, coupled with other factors intrinsic to the production environment, may contribute to productivity gains with eucalyptus cultivation [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Biomass Production and Nutritional Efficiency in Eucalyptus Genotypes in the Pampa Biome

Guimarães

Schumacher

Momolli

et al. 2019

JEAI

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The objective of this work was to determine biomass production and nutritional efficiency in three eucalyptus genotypes in the Pampa Biome. For determination of biomass and nutritional characterization, nine medium trees per genotype were sampled, separated in the components leaf, branch, bark, wood and root. The nutritional efficiency of the biomass components was determined using the biological utilization coefficient (BUC). The highest biomass production and mean annual increment were observed in the Eucalyptus urograndis hybrid with 158 Mg ha-1 and 47.2 m³ ha-1, followed by Eucalyptus grandis with 137 Mg ha-1 and 39.7 m³ ha-1 and Eucalyptus dunnii with 122 Mg ha-1 and 23.2 m³ ha-1. For wood, the best nutritional efficiency was provided by Eucalytpus urograndis for P, Ca, and Mn, followed by Eucalytpus grandis for N and Mg, and Eucalytpus dunnii for K.

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Section: Biomass Productionsupporting

confidence: 86%

“…The biological utilization coefficient (BUC) was calculated through the quotient between the biomass and the nutrient quantity per tree component, both with the same unit [7].…”

Section: Experimental Design and Data Collectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biomass Production and Nutritional Efficiency in Eucalyptus Genotypes in the Pampa Biome

Guimarães

Schumacher

Momolli

et al. 2019

JEAI

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“…On average, Ca increase 39.3% in the shoot and 46.1% in the root in plants treated with HA-L2 in comparison to the other HA sources (Figure 4). Ca together with P are the nutrient that strongly limit eucalyptus growth (VIERA et al, 2015). The association of Ca with HS gives rise to the CaActosol complex, which increased tomato yield and Ca uptake (EKINCI et al, 2015).…”

Section: Nutrient Accumulationmentioning

confidence: 99%

Nutrient acquisition and eucalyptus growth affected by humic acid sources and concentrations

Morais

Silva

Rosa

2018

SCA

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Humic acid (HA) can increase eucalyptus growth due to its biostimulant effect and improvement in plant nutrient uptake. Magnitude of these stimuli varies according to the source, chemical composition, presence of bioactive fragments, and concentration of HA. The aim of this study was to evaluate the effect of HA sources and concentrations on dry matter, accumulation and uptake efficiency (UpE) of nutrients for eucalyptus seedlings cultivated in nutrient solution. A randomized block experimental design was adopted, with four replications, in a 3x4+1 factorial scheme, in which three sources of HA (HA-L1 and HA-L2, derived from different commercial HA extracted from leonardite with 0.5 mol L -1 NaOH and 0.5 mol L -1 KOH, respectively, and HA-Com, which was extracted from compost with 0.5 mol L -1 KOH) were combined with four concentrations of C-HA (5, 10, 25, and 100 mg L -1 ) as well as a control treatment in which eucalyptus was cultivated without HA. Eucalyptus seedlings were grown for 20 days, maintaining three plants per pot. At the end of the experiment, production of shoot dry matter (SDM), root dry matter (RDM), and total dry matter (TDM); the Root: Shoot dry matter ratio; and the accumulations of N, P, K, Ca, B, Cu, Fe, and Zn in the shoot and root were evaluated as well as the UpE of these nutrients by the seedlings. Maximum production of SDM was reached at the concentrations of 14 and 13.5 mg L -1 of C-HA, for HA-L1 and HA-Com, respectively. The RDM increased with the use of HA-Com, with optimal concentration of 55 mg L -1 of C-HA. Accumulation of Fe in the eucalyptus shoot decreased in HA-treated pots, compromising Fe translocation from the root to the shoot. Regardless of HA source used, Cu accumulation by plants diminishes as C-HA concentration increases. A greater growth of eucalyptus at concentrations lower than 15 mg L -1 of C-HA occurs more through the stimulus to shoot and root growth than due to greater acquisition and UpE of nutrients by plants. Use of high concentrations of C-HA requires greater concentration of some micronutrients in the nutrient solution tested. Key words: Nutrient uptake. Bioactivity of humic fragments. Organic-metallic complexes. Uptake efficiency of nutrients. Humic substances. ResumoO ácido húmico (AH) pode aumentar o crescimento do eucalipto devido a seu efeito bioestimulante e aumento da absorção de nutrientes pelas plantas. A magnitude desses estímulos varia conforme a fonte, composição química, presença de fragmentos bioativos e concentração de AH. Objetivouse, assim, avaliar o efeito de fontes e concentrações de AH na massa seca, aquisição e eficiência de absorção (EAbs) de nutrientes por mudas de eucalipto cultivadas em solução nutritiva. O experimento foi realizado em delineamento de blocos casualizados, com quatro repetições, em esquema fatorial 3x4+1, sendo testadas três fontes de AH (AH-L1 e AH-L2, derivados de diferentes produtos comerciais de AH, tendo como material de extração leonardita, sendo extraídos com NaOH 0,5 mol L -1 e KOH 0,5 mol L -1 , res...

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“…Management of soil fertility and plant nutrition has been demonstrated to be important for increasing plantation productivity [15][16][17], or at least for maintaining levels for future rotations [8,18]. In areas of low natural fertility, the limitation to production may be associated with inadequate plant nutrition, and fertilization is considered essential [6].…”

Section: Introductionmentioning

confidence: 99%

Nutritional Prescriptions for Eucalyptus Plantations: Lessons Learned from Spain

Viera

Fernández

Rodríguez‐Soalleiro

2016

Forests

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Eucalyptus globulusLabill is the main exotic broadleaf species planted and managed for pulp and energy production in Spain, where it covers an area of more than 0.6 million ha. The climatic and soil conditions of the planting areas range from the predominantly acidic or fertile soils developed over limestone in Atlantic areas of the north and northwest of the Iberian Peninsula to the less weathered soils developed from slates, sandy deposits or limestone in the drier southwest. The widely varying conditions explain the large differences in proposed fertilizer prescriptions. This review paper provides an analysis of the proposed practices and prescriptions by considering trial results and the need to develop site specific prescriptions for seedling standards and fertilization at planting establishment. Analysis of nutritional studies and of nutrient balances over a whole rotation is presented in order to provide basic information for defining maintenance fertilization, identified as the main bottleneck for sustainable wood production in these stands. Different fertilization practices are used by non industrial owners and Spanish pulp companies, with the last one applying a more intense management relying in more fertilization. A complete consideration of nutrition-related operation and decisions is shown to be essential for maintaining potential productivity, reduce biotic and abiotic damages and reduce mineral fertilization needs.

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Implicações nutricionais com base em diferentes intensidades de colheita da biomassa de Eucalyptus urophylla x Eucalyptus globulus

Abstract: RESUMO A disponibilidade de nutrientes para futuros plantios

Cited by 12 publications

References 6 publications

Biomass Production and Nutritional Efficiency in Eucalyptus Genotypes in the Pampa Biome

Biomass Production and Nutritional Efficiency in Eucalyptus Genotypes in the Pampa Biome

Nutrient acquisition and eucalyptus growth affected by humic acid sources and concentrations

Nutritional Prescriptions for Eucalyptus Plantations: Lessons Learned from Spain

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