Search citation statements
Paper Sections
Citation Types
Year Published
Publication Types
Relationship
Authors
Journals
Revegetation of exposed sub-soil, while a desirable strategy in the recovery processes, often fails due to extreme soil chemical properties, such as low organic matter and pH levels inhospitable to biological activities such as nutrients cycling and plant establishment. This is the case for approximately 800 ha of the Cerrado biome in Brazil, where erecting the embankment of a hydroelectric dam in the 1960’s stripped vegetation, soil, and subsoil layers thereby distorting the soil properties. This work evaluates the effectiveness of restoration management (RM) treatments, to restore the soil quality, including biological activity and chemical attributes. In a factorial scheme, RM treatments include the addition of organic residue from aquatic macrophytes (AM) at 3 rates (0, 16 and 32 t ha-1), combined with ash from sugar cane bagasse of agroindustrial origin (BA) at 4 rates (0, 15, 30 and 45 t ha-1). RM samples contrasted samples collected from undisturbed Cerrado (CER) as well as a degraded area without intervention (DAWI). The mechanized RM plots received amendments and reforestation of 10 Cerrado native tree species. After 5 years, vegetation covered up to 60% of the surface in RM treatments receiving AM32 + BA45. AM and BA residues promoted height increases in the introduced plants. All RM treatments promoted lower levels of Al3+ than DAWI and CER. The combination of AM32 over the rates of incorporated ash increased soil pH and K values similarly to CER. Microbial-related variables, such as microbial biomass-C was the largest in CER, followed by the RM treatments, and the lowest in DAWI. The microbial quotient was no different between CER and RM treatments. The addition of residues such as AM and BA increased the vegetation covered, improved chemical and microbiological indicators. Thus, the residues used aided the recovery process of intensely degraded soils in the Cerrado area.
Revegetation of exposed sub-soil, while a desirable strategy in the recovery processes, often fails due to extreme soil chemical properties, such as low organic matter and pH levels inhospitable to biological activities such as nutrients cycling and plant establishment. This is the case for approximately 800 ha of the Cerrado biome in Brazil, where erecting the embankment of a hydroelectric dam in the 1960’s stripped vegetation, soil, and subsoil layers thereby distorting the soil properties. This work evaluates the effectiveness of restoration management (RM) treatments, to restore the soil quality, including biological activity and chemical attributes. In a factorial scheme, RM treatments include the addition of organic residue from aquatic macrophytes (AM) at 3 rates (0, 16 and 32 t ha-1), combined with ash from sugar cane bagasse of agroindustrial origin (BA) at 4 rates (0, 15, 30 and 45 t ha-1). RM samples contrasted samples collected from undisturbed Cerrado (CER) as well as a degraded area without intervention (DAWI). The mechanized RM plots received amendments and reforestation of 10 Cerrado native tree species. After 5 years, vegetation covered up to 60% of the surface in RM treatments receiving AM32 + BA45. AM and BA residues promoted height increases in the introduced plants. All RM treatments promoted lower levels of Al3+ than DAWI and CER. The combination of AM32 over the rates of incorporated ash increased soil pH and K values similarly to CER. Microbial-related variables, such as microbial biomass-C was the largest in CER, followed by the RM treatments, and the lowest in DAWI. The microbial quotient was no different between CER and RM treatments. The addition of residues such as AM and BA increased the vegetation covered, improved chemical and microbiological indicators. Thus, the residues used aided the recovery process of intensely degraded soils in the Cerrado area.
Resíduos orgânicos podem melhorar a fertilidade de solos degradados e auxiliar no restabelecimento da vegetação. Este trabalho foi estruturado para avaliar a contribuição de resíduos no condicionamento químico de um solo degradado e no estabelecimento do Stylosanthes capitata. O experimento foi conduzido em condição de cultivo protegido, em delineamento experimental inteiramente casualizado, em esquema fatorial 4 x 4 x 2, com 3 repetições por tratamento e 2 plantas por repetição (vasos com 10 kg de solo). Os resíduos, macrófitas aquáticas (MAC) e lodo de esgoto (LOD) foram adicionados ao solo nas doses 0, 10, 20 e 30 t ha-1. A cinza do bagaço da cana-de-açúcar (CZA) foi incorporada ao solo nas doses 0 e 20 t ha-1, dez dias antes do LOD, da MAC e das sementes de S. capitata. Transcorridos 120 dias da semeadura, o solo foi analisado para fertilidade e as plantas para altura, massa fresca e seca da parte aérea e do sistema radicular e volume de raízes. Os resíduos CZA, LOD e MAC elevaram pH, teores de matéria orgânica, fósforo e cálcio, facilitando o estabelecimento da planta, com destaque para a dose de 20 t ha-1 para LOD e MAC. Assim, pode-se recomendar o uso destes resíduos tanto como condicionantes químicos do solo como facilitadores no estabelecimento do S. capitata.
Resíduos orgânicos podem melhorar a fertilidade de solos degradados e auxiliar no restabelecimento da vegetação. Este trabalho foi estruturado para avaliar a contribuição de resíduos no condicionamento químico de um solo degradado e no estabelecimento do Stylosanthes capitata. O experimento foi conduzido em condição de cultivo protegido, em delineamento experimental inteiramente casualizado, em esquema fatorial 4 x 4 x 2, com 3 repetições por tratamento e 2 plantas por repetição (vasos com 10 kg de solo). Os resíduos, macrófitas aquáticas (MAC) e lodo de esgoto (LOD) foram adicionados ao solo nas doses 0, 10, 20 e 30 t ha-1. A cinza do bagaço da cana-de-açúcar (CZA) foi incorporada ao solo nas doses 0 e 20 t ha-1, dez dias antes do LOD, da MAC e das sementes de S. capitata. Transcorridos 120 dias da semeadura, o solo foi analisado para fertilidade e as plantas para altura, massa fresca e seca da parte aérea e do sistema radicular e volume de raízes. Os resíduos CZA, LOD e MAC elevaram pH, teores de matéria orgânica, fósforo e cálcio, facilitando o estabelecimento da planta, com destaque para a dose de 20 t ha-1 para LOD e MAC. Assim, pode-se recomendar o uso destes resíduos tanto como condicionantes químicos do solo como facilitadores no estabelecimento do S. capitata.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.