Uso da adubação verde na recuperação de solos degradados por mineração na floresta amazônica

Longo, Regina Márcia; Ribeiro, Admilson ́Írio; Melo, Wanderley José de

doi:10.1590/s0006-87052011000100020

Cited by 21 publications

(18 citation statements)

References 6 publications

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“…A implantação de cobertura vegetal sobre superfícies mineradas é uma medida necessária para a recuperação das áreas degradadas (Corrêa & Bento, 2010), e é adotada no Brasil em áreas de mineração de ferro (Silva et al, 2006), em áreas de empréstimo (Alves et al, 2007;Bonini & Alves, 2011), em áreas de mineração de cassiterita (Longo et al, 2011) e em áreas de mineração de carvão (Lunardi Neto et al, 2008;Oliveira Filho et al, 2014;Stumpf et al, 2014c).…”

Section: Introductionunclassified

Condição física e desenvolvimento radicular de gramíneas em solo construído após mineração de carvão

Stumpf

Pauletto

Pinto

et al. 2016

Pesq. agropec. bras.

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Resumo O objetivo deste trabalho foi avaliar a condição física e a potencialidade de uso agrícola de um solo construído após mineração com carvão, além do desenvolvimento radicular de gramíneas tropicais nesse solo, tendo-se considerado diferentes períodos de revegetação. O solo foi construído no início de 2003, e o experimento instalado em novembro/dezembro de 2007. A condição física do solo construído foi avaliada nas parcelas ocupadas por gramíneas perenes, como Urochloa humidicola, Panicum maximum e U. brizantha. Em julho de 2012, foram coletadas amostras de solo com estrutura preservada e não preservada para a determinação dos atributos físico-químicos, nas camadas de 0,00-0,10, 0,10-0,20 e 0,20-0,30 m. Monólitos de solo foram coletados para caracterização do sistema radicular das diferentes gramíneas. Após 58 meses de revegetação, a condição física do solo construído ainda é inadequada ao uso agrícola que envolva práticas mais intensivas de manejo de solo. Entre as camadas avaliadas, somente a de 0,00-0,10 m fornece condições para que o solo cumpra suas funções no ecossistema. Urochloa brizantha mostra-se mais promissora para a recuperação da estrutura do solo na camada de 0,00-0,10 m, e a densidade radicular foi o atributo mais sensível para a diferenciação do desenvolvimento potencial das diferentes espécies nesta camada.

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Section: Introductionunclassified

Condição física e desenvolvimento radicular de gramíneas em solo construído após mineração de carvão

Stumpf

Pauletto

Pinto

et al. 2016

Pesq. agropec. bras.

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“…Several studies have shown the capacity of different cover crops for revegetation and consequently improve the soil conditions of degraded areas (Silva et al, 2006;Lunardi Neto et al, 2008;Silva & Corrêa, 2010;Longo et al, 2011;Barros et al, 2012). However, further research is needed to identify the best-suited plant species to improve the soil physical quality under specific soil and climate conditions (Andrade et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Perennial grasses for recovery of the aggregation capacity of a reconstructed soil in a coal mining area in southern Brazil

Stumpf¹,

Pauletto²,

Fernandes³

et al. 2014

Rev. Bras. Ciênc. Solo

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The construction of a soil after surface coal mining involves heavy machinery traffic during the topographic regeneration of the area, resulting in compaction of the relocated soil layers. This leads to problems with water infiltration and redistribution along the new profile, causing water erosion and consequently hampering the revegetation of the reconstructed soil. The planting of species useful in the process of soil decompaction is a promising strategy for the recovery of the soil structural quality. This study investigated the influence of different perennial grasses on the recovery of reconstructed soil aggregation in a coal mining area of the Companhia Riograndense de Mineração, located in Candiota-RS, which were planted in September/October 2007. The treatments consisted of planting: T1- Cynodon dactylon cv vaquero; T2 - Urochloa brizantha; T3 - Panicum maximun; T4 - Urochloa humidicola; T5 - Hemarthria altissima; T6 - Cynodon dactylon cv tifton 85. Bare reconstructed soil, adjacent to the experimental area, was used as control treatment (T7) and natural soil adjacent to the mining area covered with native vegetation was used as reference area (T8). Disturbed and undisturbed soil samples were collected in October/2009 (layers 0.00-0.05 and 0.10-0.15 m) to determine the percentage of macro- and microaggregates, mean weight diameter (MWD) of aggregates, organic matter content, bulk density, and macro- and microporosity. The lower values of macroaggregates and MWD in the surface than in the subsurface layer of the reconstructed soil resulted from the high degree of compaction caused by the traffic of heavy machinery on the clay material. After 24 months, all experimental grass treatments showed improvements in soil aggregation compared to the bare reconstructed soil (control), mainly in the 0.00-0.05 m layer, particularly in the two Urochloa treatments (T2 and T4) and Hemarthria altissima (T5). However, the great differences between the treatments with grasses and natural soil (reference) indicate that the recovery of the pre-mining soil structure could take decades.

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“…In addition, the use of the mix arrangement increases organic matter content and moisture in the soil, facilitating the development of native species (Longo et al. ). Recent studies have shown that cultivating the species Sida hermaphrodita (L.) Rusby with maize does not reduce biomass when intercropped with legumes, but that biomass is reduced significantly when intercropped with grasses (Nabel et al.…”

Section: Discussionmentioning

confidence: 99%

“…Percentage cover of green manure and invasive grass for four sampling periods (45, 180, 360, and 540 d) of the three treatments sampled (T1, mixture of native and green manure in the same row; T2, alternating rows of green manure and native species; T3, native species in rows intercropped with a 2 m wide strip of green manure). development of native species (Longo et al 2011). Recent studies have shown that cultivating the species Sida hermaphrodita (L.) Rusby with maize does not reduce biomass when intercropped with legumes, but that biomass is reduced significantly when intercropped with grasses (Nabel et al 2018, Weidlich et al 2018).…”

Section: Discussionmentioning

confidence: 99%

Which spatial arrangement of green manure is able to reduce herbivory and invasion of exotic grasses in native species?

Reis

Guerra

Colado³

et al. 2019

Ecological Applications

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The practice of using green manure for ecological restoration has grown so significantly that there is a shortage of seeds for purchase on the market. Nonetheless, there is very little literature available demonstrating the effects and benefits commonly cited for green manure for addressing important environmental filters, such as herbivory and invasive grasses. Our objective is to determine which spatial sowing arrangement including green manure promotes the lowest rates of herbivory on native species and decreases cover by invasive grasses in ecological restoration. We experimentally tested three sowing configurations of green manure intercropping with native species: T1 the lowest herbivoy rate for both native and green manure, mixture of native and green manure species in the same row, T2, alternating rows of green manure and native species, and T3, rows of native species intercropped with a 2 m wide strip of green manure. We found that (1) green manure species experience greater damage from herbivory than do native species, with average values ranging from 1.8 times higher values in green manure than natives in T1, 2.9 times in T2, and 2.7 times in T3 (when sown in rows and in broader strips, green manure and native species attract more herbivorous insects than if they were sown together [muvuca]); and (2) when green manure and native species are planted mixed in the same row they produce greater soil cover, and thus limit invasion by undesired species. The use of green manure has been identified as an alternative method for overcoming the environmental filters of herbivory and invasive grasses in restoration areas. Considering the demand for information that supports the use of green manure for purposes of ecological restoration, the novel results of the present study fill a void and should prove to be of great interest to researchers and practitioners. In addition, the presented results provide information on efficient and low-cost restoration techniques that are necessary for the activity to gain scale, enabling countries to meet the large restoration targets.

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Uso da adubação verde na recuperação de solos degradados por mineração na floresta amazônica

Cited by 21 publications

References 6 publications

Condição física e desenvolvimento radicular de gramíneas em solo construído após mineração de carvão

Condição física e desenvolvimento radicular de gramíneas em solo construído após mineração de carvão

Perennial grasses for recovery of the aggregation capacity of a reconstructed soil in a coal mining area in southern Brazil

Which spatial arrangement of green manure is able to reduce herbivory and invasion of exotic grasses in native species?

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