Soil compressibility and least limiting water range of a constructed soil under cover crops after coal mining in Southern Brazil

2012 ◽  
Vol 124 ◽  
pp. 190-195 ◽  
Author(s):  
Cláudia Liane Rodrigues de Lima ◽  
Ezequiel Cesar Carvalho Miola ◽  
Luis Carlos Timm ◽  
Eloy Antonio Pauletto ◽  
Alvaro Pires da Silva
Keyword(s):  
Coal Mining ◽  
Cover Crops ◽  
Southern Brazil ◽  
Soil Compressibility ◽  
Least Limiting Water Range

The role of environmental factors in the composition of anuran species in several ponds under the influence of coal mining in southern Brazil

2017 ◽  
Vol 26 (3) ◽  
pp. 285-297 ◽  
Author(s):  
Guilherme S. De Lucca ◽  
Felipe A. P. Barros ◽  
J. Vladimir Oliveira ◽  
Jacir Dal Magro ◽  
Elaine M. Lucas
Keyword(s):  
Environmental Factors ◽  
Coal Mining ◽  
Southern Brazil ◽  
Anuran Species

scholarly journals Invisible contaminants and food security in former coal mining areas of Santa Catarina, Southern Brazil

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Graziela Dias Blanco ◽  
Rafael Barbizan Sühs ◽  
Escarlet Brizola ◽  
Patrícia Figueiredo Corrêa ◽  
Mari Lucia Campos ◽  
...  
Keyword(s):  
Food Security ◽  
Coal Mining ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Mining Areas

scholarly journals Reclamation of a Degraded Coal-Mining Area with Perennial Cover Crops

2016 ◽  
Vol 40 (0) ◽  
Author(s):  
Eloy Antonio Pauletto ◽  
Lizete Stumpf ◽  
Luiz Fernando Spinelli Pinto ◽  
Tiago Stumpf da Silva ◽  
Jordano Vaz Ambus ◽  
...  
Keyword(s):  
Coal Mining ◽  
Cover Crops ◽  
Mining Area ◽  
Coal Mining Area

scholarly journals Methods of Intercropping Cover Crops with Maize in Southern Brazil

2019 ◽  
Vol 19 (1) ◽  
pp. 14-23
Author(s):  
Vanderson Vieira Batista ◽  
Rodrigo Antonio Hossa ◽  
Elisa Souza Lemes ◽  
Karine Fuschter Oligini ◽  
Carlos Andre Barhy ◽  
...  
Keyword(s):  
Cover Crops ◽  
Southern Brazil

Comparison of an integrated crop–livestock system with soybean only: Economic and production responses in southern Brazil

2013 ◽  
Vol 29 (3) ◽  
pp. 230-238 ◽  
Author(s):  
Carlos Alberto Oliveira de Oliveira ◽  
Carolina Bremm ◽  
Ibanor Anghinoni ◽  
Anibal de Moraes ◽  
Taise Robinson Kunrath ◽  
...  
Keyword(s):  
Cover Crops ◽  
Lolium Multiflorum ◽  
Average Daily Gain ◽  
Cropping System ◽  
Livestock Grazing ◽  
Total Production ◽  
Southern Brazil ◽  
Gross Margin ◽  
Sward Height ◽  
Daily Gain

AbstractIn Brazil, as well as globally, land use has been increasingly addressed for environmental impacts and economic improvements. Integrated crop–livestock systems (ICLSs) are a potential strategy to optimize use of land, increase total production and reduce economic risk through diversification. We compared production and economic outcomes of a soybean-only system with ICLS differing in sward management. The study area was managed since 2001 using no-till in southern Brazil. Soybean [Glycine max (L.) Merr.] was rotated with a mixture of black oat (Avena strigosa Schreb) and ryegrass (Lolium multiflorum Lam) either for: (i) grazing (ICLS) or (ii) cover crops as cropping system only (CS) with no livestock grazing. Four sward height management methods (10, 20, 30 or 40 cm) were evaluated under put-and-take stocking. Across years, soybean yield (2516±103 kg ha−1) was not affected by treatment, but was affected by year (P<0.001), due to rainfall during crop development. Cattle average daily gain, gain per hectare (GPH) and gross margin were affected by treatments (P<0.001). Average daily gain was lower when pasture was managed at 10 cm than between 20 and 40 cm. With increasing sward height, a gradual reduction in cattle GPH was observed (P<0.05). Overall gross margin was lower in CS than in ICLS. Economic return with ICLS was greatest when sward height management was between 10 and 20 cm. Our study indicates that ICLS could be considered an alternative management strategy that improves economic performance and promotes balanced production in the long term.

Leachability of major and minor elements from soils and sediments of an abandoned coal mining area in Southern Brazil

2015 ◽  
Vol 187 (3) ◽  
Author(s):  
Maria Josefa Santos ◽  
César Ricardo Teixeira Tarley ◽  
Isabella Cunha ◽  
Iago Zapelini ◽  
Evgeny Galunin ◽  
...  
Keyword(s):  
Coal Mining ◽  
Mining Area ◽  
Southern Brazil ◽  
Coal Mining Area ◽  
Minor Elements ◽  
Soils And Sediments

Valorization of iron pyrite from coal mining in southern Brazil

2019 ◽  
Vol 7 (1) ◽  
pp. 102931
Author(s):  
Camila Machado de Oliveira ◽  
Thuani Gesser Müller ◽  
Leticia Patricio Ferreira ◽  
Maria Alice Prado Cechinel ◽  
Michael Peterson ◽  
...  
Keyword(s):  
Coal Mining ◽  
Iron Pyrite ◽  
Southern Brazil

scholarly journals Organic Matter Fractions and Quality of the Surface Layer of a Constructed and Vegetated Soil After Coal Mining. II - Physical Compartments and Carbon Management Index

2015 ◽  
Vol 39 (3) ◽  
pp. 895-902 ◽  
Author(s):  
Otávio dos Anjos Leal ◽  
Rosa Maria Vargas Castilhos ◽  
Eloy Antonio Pauletto ◽  
Luiz Fernando Spinelli Pinto ◽  
Clenio Nailto Pillon ◽  
...  
Keyword(s):  
Organic Matter ◽  
Coal Mining ◽  
Cover Crops ◽  
Light Fraction ◽  
Natural Soil ◽  
Partial Recovery ◽  
Low Carbon ◽  
Organic C ◽  
C Stocks

Soils constructed after mining often have low carbon (C) stocks and low quality of organic matter (OM). Cover crops are decisive for the recovery process of these stocks, improving the quality of constructed soils. Therefore, the goal of this study was to evaluate the effect of cover crops on total organic C (TOC) stocks, C distribution in physical fractions of OM and the C management index (CMI) of a soil constructed after coal mining. The experiment was initiated in 2003 with six treatments: Hemarthria altissima (T1), Paspalum notatum (T2), Cynodon dactylon (T3), Urochloa brizantha (T4), bare constructed soil (T5), and natural soil (T6). Soil samples were collected in 2009 from the 0.00-0.03 m layer, and the TOC and C stocks in the physical particle size fractions (carbon in the coarse fraction - CCF, and mineral-associated carbon - MAC) and density fractions (free light fraction - FLF; occluded light fraction - OLF, and heavy fraction - HF) of OM were determined. The CMI components: carbon pool index (CPI), lability (L) and lability index (LI) were estimated by both fractionation methods. No differences were observed between TOC, CCF and MAC stocks. The lowest C stocks in FLF and OLF fractions were presented by T2, 0.86 and 0.61 Mg ha-1, respectively. The values of TOC stock, C stock in physical fractions and CMI were intermediate, greater than T5 and lower than T6 in all treatments, indicating the partial recovery of soil quality. As a result of the better adaptation of the species Hemarthria and Brizantha, resulting in greater accumulation of labile organic material, the CPI, L, LI and CMI values were higher in these treatments, suggesting a greater potential of these species for recovery of constructed soils.

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