Data/hora: 01/06/2024 12:11:38

Biblioteca(s): | Embrapa Cerrados; Embrapa Instrumentação; Embrapa Pecuária Sudeste.
Data corrente: | 01/12/2022
Data da última atualização: | 01/12/2022
Autoria: | SANTOS, J. V. dos; BENTO, L. R.; BRESOLIN, J. D.; FOSCHINI, M. M.; OLIVEIRA, P. P. A.; PEZZOPANE, J. R. M.; BERNARDI, A. C. de C.; MENDES, I. C.; MARTIN NETO, L.
Afiliação: | JOANA DIAS BRESOLIN, CNPDIA; MILENE CORSO MITSUYUKI, CNPDIA; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; JOSE RICARDO MACEDO PEZZOPANE, CPPSE; ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; LADISLAU MARTIN NETO, CNPDIA.
Título: | The long-term effects of intensive grazing and silvopastoral systems on soil physicochemical properties, enzymatic activity, and microbial biomass.
Ano de publicação: | 2022
Fonte/Imprenta: | Catena, v. 219, a106619, 2022.
Páginas: | 1 - 11
ISSN: | 0341-8162
DOI: | https://doi.org/10.1016/j.catena.2022.106619
Idioma: | Inglês

Conteúdo:

Brazil is the largest exporter and the second-largest beef producer in the world. The country?s biggest challenge 
has been to increase the production capacity of soils in an environmentally sustainable way. In this context, 
agricultural practices that preserve the environment have demonstrated high productivity and sustainability by 
emphasizing intensive grazing management and silvopastoral systems. In this study, the effects of the conversion 
of a native forest (FO) into different pasture-based cattle production systems were assessed in long-term field 
experiments using microbiological and physicochemical measurements. Five pasture systems were evaluated: i) 
irrigated high stocking rate pasture (IHS); ii) rainfed high stocking rate pasture (RHS); iii) rainfed moderate 
stocking rate pasture (RMS); iv) silvopastoral system with moderate stocking rate (SPS); and v) degraded pasture 
(DP), the latter used as a reference for conventional pasture management, extensively used by farmers. Soil 
samples (0?10 cm) were analyzed for bulk density (BD), total carbon content (TC), soil organic matter humification index (HLIFS), activities of soil enzymes &#946;-glucosidase (BG) and arylsulfatase (ARYL), microbial biomass 
carbon (MBC), and basal respiration (BR). The results showed that all managed pastures presented higher soil 
carbon content than DP (16.2 ± 1.7 g kg&#8722; 1
), especially the RMS system, which presented the highest carbon 
content (32.9 ± 0.9 g kg&#8722; 1
). Activities of BG and ARYL were more sensitive to detecting management changes 
than MBC and BR. Increased activities of BG and ARYL were observed in the RMS system, possibly due to the 
higher amount of biomass input, while this effect was less expressive in the other management systems. The 
results indicated that soil enzymatic activities are sensitive to land use and management and could be used as soil 
quality indicators in pasture-based beef cattle production for different systems in tropical soils.

Palavras-Chave: | Enzymatic activity; ILPF; Integrated livestock forest systems; Ntegrated livestock-forest systems; Production systems.
Thesaurus Nal: | Pastures; Soil organic matter; Tropical soils.

Categoria do assunto:

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X Pesquisa, Tecnologia e Engenharia

Registro original: | Embrapa Instrumentação (CNPDIA)

Exemplares:

CNPDIA - (18154-1) - UPC - AP - DD - PROCI.22/180 -  - 2022/185 - DIS
CPPSE - (25811-1) - UPC - AP - DD - PROCI-2022.00126 - SAN - 2022.00219 - DIS