Planting nitrogen-fixing trees in tropical Eucalyptus plantations does not increase nutrient losses through drainage

Formaglio, Greta; Krusche, Alex V.; Mareschal, Louis; Bouillet, Jean‐Pierre; Gonçalves, José Leonardo de Moraes; Nouvellon, Yann; Delgado-Rojas, Juan Sinforiano; Montebelo, Alexandra; Ranger, Jacques; Laclau, Jean‐Paul

doi:10.1016/j.foreco.2023.120940

Cited by 5 publications

(2 citation statements)

References 73 publications

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“…A study revealed that the litterfall of 3 years-old sengon provides nutrient inputs of C, N and P to the soil of 4.29 tons ha -1 , 0.97 tons ha -1 and 1.79 kg ha -1 respectively per year [22]. The presence of this legume tree is important in agroforestry, as it increase the nitrogen (N) availability for plants and reduce the risk of nitrogen loss because of leaching [23]. Their ability in fixing N is correlation to the presence of Rhizobium as N-fixation bacteria in root nodules of sengon [24].…”

Section: Environmental Condition and Research Site Characteristicsmentioning

confidence: 99%

Promoting smart agroforestry of sengon-based arrowroot and cardamom to support food security

Octavia,

Wijayanto,

Budi

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The forest land has great potential to provide food and also contributes to achieving Indonesia’s forest and other land uses (FOLU) Net Sink 2030, as a concrete contribution of the forestry sector to addressing national and global needs, which can be done by promoting smart agroforestry. This research aims to provide smart agroforestry model of sengon (Falcataria moluccana) with arrowroot and cardamom, to analyze the sengon growth, the arrowroot and cardamom biomass productivities under the agroforestry models. The split-plot design was employed with six cropping pattern as the main plot, in three agroforestry models (sengon-arrowroot; sengon-cardamom; sengon-arrowroot-cardamom) and three monoculture plots, and three levels of the dosage of manure as subplots (0; 250; 500 g). The results showed that higher growth of sengon was found in the three agroforestry models (3.0-3.5 m3.ha−1) compared to monoculture (2.1 m3.ha−1). The highest dry weight of leaf, stem, root, tuber, fruit bunch and total biomass of arrowroot and cardamom was produced in the monoculture. These agroforestry models have the potential to support food security and Indonesia’s FOLU Net Sink 2030, which will be prospective mainstreaming in implementing Social Forestry programs.

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Section: Environmental Condition and Research Site Characteristicsmentioning

confidence: 99%

Promoting smart agroforestry of sengon-based arrowroot and cardamom to support food security

Octavia,

Wijayanto,

Budi

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Recent studies highlight that these mixed plantations not only improve soil chemical properties by enriching the soil with vital nutrients but also enhance soil physical structure, leading to improved water retention and reduced soil erosion (Luo et al, 2015;Dawud et al, 2016;Zhang Q. et al, 2021;. Furthermore, these mixed ecosystems have demonstrated markedly higher microbial diversity relative to monoculture systems, which results in improved nutrient cycling and overall soil health (Xu et al, 2020;Zhang et al, 2022;Formaglio et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Mixed Eucalyptus plantations in subtropical China enhance phosphorus accumulation and transformation in soil aggregates

Cui,

Yan,

Wang

et al. 2023

Front. For. Glob. Change

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IntroductionThe production of Eucalyptus, a principal economic tree genus in China, is faced with challenges related to soil phosphorus (P) limitations. In this study, we explore variations in phosphorus content, storage, and transformation in Eucalyptus forests. We hypothesize that mixed forests augment soil aggregate stability and P content and that microaggregates are pivotal in determining P differences between mixed and pure forests. Additionally, we posit that mixed forests foster P transformation, enhancing its efficacy in the soil. Current research on the distribution and transformation of soil total P (TP) and P fractions at the soil aggregate level is limited.MethodsIn this study, we selected soil from a Eucalyptus-Mytilaria laosensis Lecomte mixed forest, Eucalyptus-Erythrophleum fordii Oliv mixed forest, and pure Eucalyptus forest in Chongzuo County, Guangxi, China, as the research objects. Using a dry-sieving method, we divided the soil collected in situ from the 0–40 cm layer into aggregates of >2, 1–2, 0.25–1, and <0.25 mm particle sizes, measured the TP and P fractions (resin-extractable inorganic P, bicarbonate-extractable inorganic P, bicarbonate-extractable organic P, sodium hydroxide-extractable inorganic P, sodium hydroxide-extractable organic P, dilute hydrochloric acid-extractable P, concentrated hydrochloric acid extractable inorganic P, concentrated hydrochloric acid-extractable organic P and residue-P) in different aggregates, and used redundancy analysis and PLS SEM to reveal key factors affecting soil P accumulation and transformation.ResultsThe results showed that compared to pure Eucalyptus forests, mixed Eucalyptus forests significantly enhanced the stability of soil aggregates and the content and storage of phosphorus, especially the Eucalyptus-Mytilaria laosensis mixed forest. The content of total soil phosphorus and its fractions decreased with increasing aggregate particle size, while the opposite trend was observed for stored P, with aggregates <0.25 mm being the main fraction influencing soil phosphorus accumulation. The transformation process of P fractions was primarily constrained by dissolution rates, mineralization rates, biological activity, including the action of microbes, fungi, and plant–root interactions, and other factors.DiscussionMixed forests increased the transformation of phosphorus in soil aggregates, effectivel enhancing the availability of soil phosphorus. In summary, this study provides important evidence for the systematic management of subtropical artificia Eucalyptus forests and the sustainable utilization of soil resources.

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Technology Advances in the Bioethanol Production from Eucalyptus Wood Biomass

Valente,

Wancura,

de Freitas

et al. 2023

Bioenerg. Res.

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Planting nitrogen-fixing trees in tropical Eucalyptus plantations does not increase nutrient losses through drainage

Cited by 5 publications

References 73 publications

Promoting smart agroforestry of sengon-based arrowroot and cardamom to support food security

Promoting smart agroforestry of sengon-based arrowroot and cardamom to support food security

Mixed Eucalyptus plantations in subtropical China enhance phosphorus accumulation and transformation in soil aggregates

Technology Advances in the Bioethanol Production from Eucalyptus Wood Biomass

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