Decomposition of &amp;lt;i&amp;gt;Eucalyptus sp.&amp;lt;/i&amp;gt; and &amp;lt;i&amp;gt;Pinus taeda&amp;lt;/i&amp;gt; Harvest Residues under Controlled Temperature and Moisture Conditions

Sánchez, Gabriela; Pino, Amabelia del; Hernández, Jorge

doi:10.4236/ojf.2018.81007

Cited by 5 publications

(5 citation statements)

References 26 publications

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“…By the end of the 1.5-year study period, the total amount of N released from decomposing A. mangium harvest residues was 137 kg ha −1 , 35% of which released from bark. In contrast, bark made no net contribution to the release of N from harvest residues of E. dunnii and E. globulus for up to two years [16,17] and E. grandis, E. globulus, E. dunnii, and Pinus taeda L. for up to six months following harvest [59]. While the quantities of N taken up by A. mangium can be as much as 180 kg ha −1 yr −1 in the first two years of growth [21], A. mangium bark residue can potentially make an important contribution to this demand.…”

Section: Discussionmentioning

confidence: 99%

“…The release of K and Ca was very rapid, especially during the first three months of decomposition, and reflected the high K and Ca concentrations in the harvest residues. Such rapid release of K is commonly found in plantations across a range of environments [16,17,20,59] because K is highly mobile; hence its rapid leaching by rain soon after placement of the mesh bags in a number of related experiments [16,17,67,68]. The rapid release of Ca and decline in Ca concentration in harvest residues is linked to the rapid release rates of Ca oxalate [69,70], which accounts for 20-56% of total Ca in fresh plant tissues [69].…”

Section: Discussionmentioning

confidence: 99%

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Contribution of Harvest Residues to Nutrient Cycling in a Tropical Acacia mangium Willd. Plantation

Bich

Eyles

Mendham

et al. 2018

Forests

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Harvest residues can play a crucial role in conserving nutrients for recycling in forests, but little is known about the rates of decomposition and nutrient release from these residues following logging in tropical acacia plantations. In this study, we examined the biomass and nutrient content of harvest residue components (bark, leaves, and branches) using the litterbag technique for a 1.5-year-period following harvest of a seven-year-old Acacia mangium plantation in Northern Vietnam. At harvest, the total dry biomass of harvest residues was 18 t ha−1 comprising bark (8.9 t ha−1), branches (6.6 t ha−1), and leaves (2.5 t ha−1). The retained bark on site conserved 51% N, 29% P, 32% K, 64% Ca, and 24% Mg content from harvest residues for recycling. Decomposition rate of the leaves was the most rapid (k = 1.47 year−1; t0.5 = 0.47 year), then branches (k = 0.54 year−1; t0.5 = 1.29 year), and bark (k = 0.22 year−1; t0.5 = 3.09 year). During decomposition, the loss of nutrients from harvest residues was K ≈ Ca > N > P> Mg. Decomposition of harvest residues and the associated rate of nutrient release can potentially supply a significant amount of nutrients required for stand development in the next rotation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Contribution of Harvest Residues to Nutrient Cycling in a Tropical Acacia mangium Willd. Plantation

Bich

Eyles

Mendham

et al. 2018

Forests

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“…Generally, forest residues have high C:N ratio (Gama-Rodrigues and Barros, 2002;Sanchez et al, 2018), and there are indications that the limit between mineralization and immobilization occurs with N concentration of around 7.9 g kg − 1 (Cotrufo et al, 2013).Thus, we hypothesized that retention of eucalyptus harvest residues on the soil surface contributes to nutrient cycling, improves soil fertility, and reduces the need for fertilizer in Eucalyptus urograndis plantations. The objective of this study was to assess the release of nutrients from the decomposition of eucalyptus harvest residues, and their stocks in areas subjected to two different eucalyptus harvesting systems.…”

Section: Introductionmentioning

confidence: 98%

Nutrient release and decomposition time of Eucalyptus urograndis harvest residues practices under Brazil tropical conditions

Sena,

Maltoni,

Barbosa

2024

Preprint

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The forest areas, besides their importance in the economic sector, have an important role in soil conservation when sustainable silvicultural practices are adopted. The objective of this work was to evaluate the accumulation and decomposition of eucalyptus harvest residues in Eucalyptus urograndis plantations in areas subjected to different management systems of harvest residues in eastern Mato Grosso do Sul. Litter bags were used to evaluate the decomposition of harvest residues and nutrient (N, P, K, Ca, Mg, S, and C) content of the remaining residues under different harvesting systems during a 36-month period. Harvesting in the cut to length (CTL) system provided greater phytomass and N, P, K, Ca, and C contents. The decomposition of harvest residues in the CTL system was greater during the initial months. T he removal of the bark reduced the amount of N and increased the decomposition time, as observed in the tree-length (TL) system. The amount and composition of forest harvest residues affect their decomposition and nutrient release. The forest harvest residues present mass loss as a function of decomposition time, influenced by the rainfall regime.

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Section: Introductionmentioning

confidence: 99%

“…Nutrient concentration and its stoichiometry should not be neglected when investigating influencing factors over decomposition processes such as lignin:N ratios that are associated with slower decomposition rates (Mungai and Motavalli, 2006;Sánchez et al, 2018), especially in the later stages of decomposition (Berg and McClaugherty, 2003). Among harvest residues, branches and bark fractions present a lower rate of decomposition when compared to the leaf fraction and this result is mainly attributed to the high C:N and lignin:N ratios (Zhang et al, 2008;Sánchez et al, 2018). Nutrient stoichiometric relations during litter decomposition are indicative of each nutrient is limiting soil decomposer community (Lanuza et al, 2018;Siqueira et al, 2021), but the literature lacks information on eucalypt harvest residues decomposition and its nutrient relations over decomposition.…”

Section: Introductionmentioning

confidence: 99%

Decomposition and nutrient release of eucalyptus harvest residues in southeast Brazil

Moura

Caldeira

Siqueira

et al. 2022

CERNE

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Background: Eucalypt harvest residues are critical to nutrient balances and forest soil productivity mainly in areas with consecutive forest rotations. However, nutrient release and their relations over decomposition are still poorly understood in tropical sites. We aimed to understand how nutrients are released from leaves, branches, and bark (as harvest residues), and how nutrient concentrations could be limiting the decomposition of each fraction. We measured mass loss and nutrient release of Eucalyptus urophylla x Eucalyptus grandis harvest residues for 365 days in Southeast Brazil.Results: Leaves fraction showed a faster decomposition rate than branches and bark, but nutrient accumulation was observed for all harvest residues, especially bark and branches at later stages of the decomposition. Decomposition of all harvest residues seemed to be P-limited with a stronger limitation occurring for leaf litter decomposers. The decomposition of more lignified residues such as bark and branches was less influenced by climatic variables than leaf decomposition. Conclusion:Eucalypt harvest residues had a great contribution to soil fertility, and retaining them in the soil systems will enhance soil fertility in the short (leaves) and long-term (branches and bark) and can partially supply the nutrients for the next rotation.

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Decomposition of <i>Eucalyptus sp.</i> and <i>Pinus taeda</i> Harvest Residues under Controlled Temperature and Moisture Conditions

Abstract: Background: Following the harvest of Eucalyptus grandis Hill ex Maiden,

Cited by 5 publications

References 26 publications

Contribution of Harvest Residues to Nutrient Cycling in a Tropical Acacia mangium Willd. Plantation

Contribution of Harvest Residues to Nutrient Cycling in a Tropical Acacia mangium Willd. Plantation

Nutrient release and decomposition time of Eucalyptus urograndis harvest residues practices under Brazil tropical conditions

Decomposition and nutrient release of eucalyptus harvest residues in southeast Brazil

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