Nutrient release from decomposing Eucalyptus harvest residues following simulated management practices in multiple sites in Brazil

Ferreira, Gabriel W.D.; Soares, Emanuelle Mercês Barros; Oliveira, Fernanda Cristina Caparelli de; Silva, Ivo Ribeiro da; Dungait, Jennifer A. J.; Souza, Ivan F.; Vergütz, Leonardus

doi:10.1016/j.foreco.2016.03.047

Cited by 33 publications

(35 citation statements)

References 72 publications

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“…The critical ratios between carbon and mineral nutrients observed with their initial increment indicate that decomposers adapt to low nutrient conditions, exhibiting a reduction in carbon use efficiency (Manzoni et al, 2012). For eucalyptus litter, Ferreira et al (2016) found high decomposition rates despite an initial C/N ratio of 120, so there was N immobilization. These authors attributed this result to the effect of specific microorganisms on litter decomposition.…”

Section: Discussionmentioning

confidence: 94%

Clonal teak litter in tropical soil: decomposition, nutrient cycling, and biochemical composition

Santos

Cotta

et al. 2020

Revista Brasileira De Ciência Do Solo

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Litter decomposition dynamics and nutrient release are also dependent on their biochemical composition, and such information is important for adequate nutritional management but is still incipient for plants like teak. This study aimed to evaluate the decomposition dynamics, nutrient release, and biochemical composition of clonal teak litter. The study was conducted in areas of clonal teak stands, in São José do Rio Claro, Mato Grosso, Brazil. Litter collectors were arranged in the area to collect material along the entire dry period. Subsequently, this litter was placed in litter bags, which were distributed in the area. The litter bags were collected every month, for 0.91 years, to determine the dry matter and mineral nutrient contents, in order to estimate the decomposition and nutrient release. Litter biochemical composition was determined at the times of 0, 0.25, 0.58, 0.75, and 0.91 years. Teak litter, essentially leaves, had a half-life time (t 1/2) of dry matter and C of 0.74 years, due to the high content of insoluble lignin, which corresponds to 2.28 Mg ha-1 of dry matter and 1.2 Mg ha-1 of C. The t 1/2 values of N and P release (1.20 and 1.01 years) were higher than those of K, Ca, and Mg (0.08, 0.47, and 0.66 years, respectively). Hence, the nutrient release rate of the litter followed the descending order: K > Ca > Mg > P > N. The litter biochemical composition at the end of the experimental period showed reductions of 18.7 % in polysaccharides and holocellulose, 56 % in polyphenols, 56.3 % in tannins, 22.2 % in extractives, and 28.5 % in soluble lignin; and increases of 25.6 % in insoluble lignin and 22.6 % in total lignin. These data are useful for the balance of carbon and mineral nutrients and to support fertilization management in teak plantations in low-fertility soils.

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Section: Discussionmentioning

confidence: 94%

Clonal teak litter in tropical soil: decomposition, nutrient cycling, and biochemical composition

Santos

Cotta

et al. 2020

Revista Brasileira De Ciência Do Solo

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“…The authors attributed the result mainly to the differences in the type of vegetation that alters the community of decomposing fungi. In fact, in recent meta-analysis regarding the substitution of native forests by exotic species in areas under river basin influence, Ferreira et al (2016) detected a strong effect of low quality in eucalypt litter, reducing the decomposition efficiency and the microbial decomposing community profile.…”

Section: Discussionmentioning

confidence: 99%

Soil Organic Matter Fractions Under Eucalypt Plantation in Reform Management

et al. 2019

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Harvesting and reform in eucalyptus can lead to changes in soil organic matter (SOM). The objective of this work was to evaluate the changes in total organic C (TOC) and N (NT), C and N in humic acid (HA), fulvic acid (FH), light organic matter (LOM) and microbial biomass (MB), in Ultisol of eucalypt stands over one, two and four years of renovated areas in Rio Grande do Sul state. After the first year of eucalyptus reform, there were 78% of increases in TOC (0.0-1.0-m soil layer). After two years, there was an increase in TN and an average reduction of 52% in LOM-C (0.0-0.1-m soil layer). FA-C, HA-C, and HU-C presented mean reductions of 43 Mg ha -1 (0.0-1.0-m soil layer) after four years of reform. The litter contribution of previous crop and the crop residues from the harvest resulted in increments of the SOM fractions. However, there is a negative effect in later years.

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“…This author proposes that the litter decomposition rate during the initial stage increases rapidly in response to increasing N content, in contrast with that observed in the latter phases, in which lignified materials predominate. However, despite some prior studies reporting N as an important factor for soil C dynamics (Stockmann et al, 2013;Du et al, 2014), in tropical regions, a complete understanding of the role played by this nutrient in decomposition of plant residue (Cusack et al, 2011;Ferreira et al, 2016) and soil C stabilization (Prescott, 2010) remains unclear. Probably, the effect of N on the decomposition process may be linked to the response of the microbial community to changes in the C/N and lignin/N ratio (Cotrufo et al, 2013).…”

Section: Introductionmentioning

confidence: 98%

Contribution of Eucalyptus Harvest Residues and Nitrogen Fertilization to Carbon Stabilization in Ultisols of Southern Bahia

Oliveira

Silva

Ferreira

et al. 2018

Rev. Bras. Ciênc. Solo

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Eucalyptus forests in southern Bahia (BA) are planted in soils with a sandy surface layer and humid tropical climate, conditions that lead to soil carbon (C) decomposition. Recent studies have shown that nitrogen (N) may be important for soil C stabilization. The aim of this study was to evaluate the contribution of Eucalyptus harvest residues and nitrogen fertilization to C stabilization in Ultisols of southern BA. The experiment was conducted in Eucalyptus clonal plantations cultivated in two regions of Eunápolis, BA, Brazil, with different clay content: southern region (140 g kg -1 of clay) and western region (310 g kg -1 of clay). Five treatments were evaluated: one control (CTR), without Eucalyptus harvest residues and N fertilization, and four treatments with harvest residues combined with four rates of N fertilization: 0, 25, 50, and 100 kg ha N) of particulate organic matter (POM) and mineral-associated organic matter (MAOM) were determined. In the southern region after 36 months, the C-MAOM stocks in the 0.00-0.10 m layer of the CTR decreased by 33 %. The addition of harvest residue followed by 100 kg ha -1 N increased C-POM and N-POM stocks (0.00-0.10 m) compared to the CTR, and the final N-POM stocks and residue-C recovery in the surface soil layer were positively correlated with the increase in N fertilization rates. In the western region, residue maintenance resulted in increased C-MAOM stocks (0.00-0.10 m) compared to the CTR, but an increase in N availability reduced this increment. The increase in N fertilization rates did not alter C stocks, but reduced N stocks of POM and MAOM in the upper soil layer. At the end of the experiment, N fertilizer recovery (0.00-0.60 m) was similar among the regions evaluated. In soil with lower clay content, higher N availability led to higher C and N stocks in the particulate fraction. In soils with high clay content, physical and chemical protections are more important than N fertilization for soil C stabilization, and just maintaining harvest residues may suffice to increase C and N in the more stable SOM fraction.

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Nutrient release from decomposing Eucalyptus harvest residues following simulated management practices in multiple sites in Brazil

Cited by 33 publications

References 72 publications

Clonal teak litter in tropical soil: decomposition, nutrient cycling, and biochemical composition

Clonal teak litter in tropical soil: decomposition, nutrient cycling, and biochemical composition

Soil Organic Matter Fractions Under Eucalypt Plantation in Reform Management

Contribution of Eucalyptus Harvest Residues and Nitrogen Fertilization to Carbon Stabilization in Ultisols of Southern Bahia

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