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| Machado, Murilo Rezende; Camara, Rodrigo; Sampaio, Paulo de Tarso Barbosa; Pereira, Marcos Gervasio; Ferraz, João Baptista Silva. |
| Forest plantations may minimize the effects of deforestation in the Amazon. However, there are differences among species in terms of their influences on soil recovery. The effects of monospecific plantations of Acacia mangium, Dipteryx odorata, Jacaranda copaia, Parkia decussata,and Swietenia macrophylla, and areas of pasture and native forest on the chemical soil attributes of the Brazilian Amazon were evaluated. One bulked soil sample was collected per plot (0.00-0.05, 0.05-0.10, and 0.10-0.30 m; three plots of 128 m2) in each area. No significant differences in most of the soil attributes were observed among the forest plantations. However, soil K+ and P were higher in the Swietenia macrophylla plantations, while higher values of Ca2+, sum of bases, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Agrárias Amazon deforestation; Edaphic attributes; Environmental reclamation; Forest plantations; Manejo e Conservação do Solo. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32689 |
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| Guimarães,Lorena A. de O. P.; Dias,Luiz E.; Assis,Igor R. de; Cordeiro,Amanda L.. |
| ABSTRACT The processing of gold ores exploited in Paracatu, MG, generates tailings that are challenging for revegetation, mainly because of the high content of arsenic and salinity. Aiming at the revegetation of the area of disposal of these tailings, the objective of this study was to evaluate the effects of phosphorus doses on vetiver plants (Chrysopogon zizanioides) and on the planting substrate, which consisted of tailings from the processing of ore named B1, exploited in Paracatu, with water restriction. Vetiver was grown for four months in the substrate under doses of 0, 140, 280, 560 and 1280 mg kg-1 of P2O5. Increasing doses of phosphorus improved the chemical characteristics of the substrate. However, the highest dose (1280 mg kg-1 P2O5) resulted... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sulfide substrate; Gold mining; Environmental reclamation; Chrysopogon zizanioides. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001000891 |
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