Soil organic carbon recovery and coffee bean yield following bauxite mining

Boas, Hiran F. Vilas; Almeida, Luís Fernando Januário; Teixeira, Rafael Silva; Souza, Ivan F.; Silva, Ivo Ribeiro da

doi:10.1002/ldr.2949

Cited by 14 publications

(18 citation statements)

References 33 publications

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“…The initial improvement in soil quality also was reflected in a high coffee bean yield (approximately 1.8 t ha −1 ) measured 27 months after the application of the treatments. Such yields were comparatively higher than the local average (~1.5 t ha −1 ) as reported by Vilas Boas et al (). These results reinforce the overall relevance of a holistic evaluation of soil attributes to assess soil quality and its relationship with plant growth (Askari & Holden, ; Obade & Lal, ).…”

Section: Discussionmentioning

confidence: 46%

“…Moreover, the assessment of soil quality inferred at 19 months showed a strong correlation with the first coffee bean yield at 27 months (Figure ). Not coincidentally, this effect was further observed for the second and third harvests at 39 and 51 months after the application of the treatments (Vilas Boas, Almeida, Teixeira, Souza, & Silva, ).…”

Section: Discussionmentioning

confidence: 69%

“…Despite some evident improvement in soil quality due to the mitigation practices applied (i.e., fertilization and intercrops), our results indicate that the reclamation has not reached similar conditions to those observed in premining (Figure ). Yet, the treatments applied and their effects translated into SQIs provided strong evidence that reasonably suitable conditions for plant growth can be achieved in short‐term (Vilas Boas et al, ). Indeed, 19 months after the application of the treatments, soil quality was significantly improved in the plots using intercrops and PL fertilization (alone or in combination with CF), showing SQI ~23% greater than in the postmining soils (Figure ).…”

Section: Discussionmentioning

confidence: 99%

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Practices for rehabilitating bauxite‐mined areas and an integrative approach to monitor soil quality

et al. 2019

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Mining activities cause severe impacts to soil, the restoration of which requires specific management, and proper evaluation and monitoring. In this research, our objectives were to study recovery strategies and integrate indicators for monitoring the reclamation of an agricultural soil after bauxite mining. Distinct fertilizations (nonfertilized control [CT], poultry litter [PL], chemical fertilization [CF], and PL + CF combined) and intercrops (bare soil with no intercrops [NI], grass [G], legume [L], and G + L combined) treatments were used as recovery strategies to restore soil capacity to sustain a coffee plantation. We selected 27 quality indicators to compare the premining condition, postmining (reconfigured topsoil), and 19 months after the application of fertilization/intercrops treatments. We used univariate statistics to select soil quality indicators and multivariate analyses to group the selected indicators into organic, chemical, physical, and microbiological properties. From each group, one representative attribute was selected, and its averaged weight was summarized into a soil quality index (SQI). In postmining, the estimated SQI was approximately 65% lower than in premining. The SQI recalculated 19 months after the application of fertilization (PL or PL + CF) and intercrops (G, L, or G + L) was 23% higher than in postmining and showed strong correlation with coffee bean yield (at 27 months). Coffee bean yield was highest in plots with L or G + L receiving PL or PL + CF. We conclude that organic amendments and intercrops are suitable approaches to recover soil following bauxite mining, and soil indicators can be integrated to properly monitor the land reclamation progress.

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Section: Discussionmentioning

confidence: 46%

Section: Discussionmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%

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Practices for rehabilitating bauxite‐mined areas and an integrative approach to monitor soil quality

et al. 2019

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“…and ). Overall, without further intervention after retrieving the overburden would delay the recovery of agricultural activities in bauxite‐mined areas undergoing reclamation ( Vilas Boas et al., ; Borges et al., ). This aspect also reinforces the need of proper practices to speed up the recovery of bauxite‐mined areas in tropical regions, where soil nutrient reserves are limited.…”

Section: Discussionmentioning

confidence: 99%

Impact of fertilization on cover crops and microbial community on a bauxite‐mined soil undergoing reclamation

Teixeira

Souza

Santos

et al. 2019

J. Plant Nutr. Soil Sci.

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The reclamation of bauxite‐mined areas can be favored by the application of organic and/or chemical fertilization to restore the vegetation. Otherwise, the impact of fertilizations on soil microbiota or plant–microbe interactions as land reclamation progresses is less understood. To address this issue, we evaluated the impact of organic and chemical fertilization on plants and soil microbial community within the first 36 months of land reclamation in a bauxite‐mined site. The experiment was set up according to a split‐plot design in which the main plots received fertilizations [non‐fertilized control (NF), chemical fertilization (CF; NPK and rock phosphate), organic fertilization (OF; poultry litter), and CF+OF combined], and the subplots received cover crops [no cover crops (NC), grass (B; Brachiaria), legume (S, Stylosanthes), and B+S combined]. Cover crops biomass yield was assessed annually with five field campaigns per year. We used phospholipid fatty acids (PLFAs) to infer the impacts of mining and restoration practices on actinobacteria, Gram‐negative and Gram‐positive bacteria, arbuscular mycorrhizal fungi, and fungi. Accordingly, PLFAs were determined before bauxite mining (pre‐mining), six months after topsoil reconfiguration (post‐mining), and after 14 and 36 months following the application of the fertilizations and cover crops. PLFAs results indicated that in post‐mining, the living microbiota was significantly lower than in pre‐mining. Cover crops biomass yield was highest for B and B+S fertilized with CF+OF at 14 and 36 months. Both parametric and non‐parametric statistics showed a temporal variation in the response of living microbes to the treatments applied. After 14 months, living microbes showed greatest response to OF, while at 36 months their response was strongest in the treatments with highest plant biomass production (B and B+S). These results suggest that in the early stages of land reclamation, living microbial biomass benefit the most from organic fertilizers. As this initial boost decline, living microbes are more likely to thrive in areas undergoing reclamation where they can develop synergistic interactions with plants.

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“…The use of stable isotope techniques (e.g., 13 C) to assess the contribution of different vegetative sources of SOM (Epron, Mouanda, Mareschal, & Lydie‐Stella, ; Hernández et al, ; Souza et al, ), alterations in SOM due to land‐use changes (Vilas Boas, Almeida, Teixeira, Souza, & Silva, ), and to discern the origins of soil C–CO 2 (Millard, Midwood, Hunt, Barbour, & Whitehead, ; Oliveira et al, ) has been reported widely in the literature. In these studies, for the 13 C isotope technique to be useful, there must either be differences in the natural 13 C abundances between soils (soils cultivated with C 3 or C 4 plants) and plants (C 3 or C 4 plants) or a 13 C enrichment in the plant material ( 13 C labelling).…”

Section: Introductionmentioning

confidence: 99%

Short‐term carbon emissions: Effect of various tree harvesting, transport, and tillage methods under a eucalyptus plantation

Fialho

Teixeira

et al. 2018

Land Degrad Dev

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Eucalyptus forests stand out for their potential to sequestrate atmospheric CO 2 in soil organic matter throughout their growth. Our study evaluated the harvesting and tillage effect in eucalyptus plantations to the soil CO 2 , 13 C-CO 2 , and CH 4 fluxes. This study was carried out in a eucalyptus plantation, on Typic Haplustox soil. The study used stands cultivated with eucalyptus at the end of the first rotation (7 years), established over degraded pastures. The effect of harvesting was assessed through comparisons of samples taken before and after harvesting with Feller + Skidder (F + S) and Harvester + Forwarder (H + F) methods and separate samples of plant rows (R) and plant interrows (IR). The effect of tillage was assessed through comparisons of R and IR samples taken before and after subsoiling tillage in areas harvested with F + S and H + F methods. A nested experimental design was used with eight replicates. The harvest operation (F + S and H + F methods) in eucalyptus plantationsincreased soil CO 2 fluxes, which were primarily derived from eucalyptus materials ('new C'). The F + S harvesting method resulted in the highest soil density and soil moisture reduction in the IR. The tillage operation (subsoiling) resulted in higher soil CO 2 fluxes in eucalyptus plantations harvest with F + S and H + F methods. However, the H + F method preserved the older soil organic carbon (40.8% in R and 50.4% IR of C 4 -CO 2 ). The soil in the eucalyptus plantations showed soil CH 4 influxes, and the harvest and tillage (subsoiling) operations did not negatively affect the net soil CH 4 influx in the studied eucalyptus plantations.

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Soil organic carbon recovery and coffee bean yield following bauxite mining

Cited by 14 publications

References 33 publications

Practices for rehabilitating bauxite‐mined areas and an integrative approach to monitor soil quality

Practices for rehabilitating bauxite‐mined areas and an integrative approach to monitor soil quality

Impact of fertilization on cover crops and microbial community on a bauxite‐mined soil undergoing reclamation

Short‐term carbon emissions: Effect of various tree harvesting, transport, and tillage methods under a eucalyptus plantation

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