Data/hora: 26/07/2024 22:54:23

Provedor de dados: 	Revista Brasileira de Zootecnia	
País: 	Brazil	
Título: 	Spatial variability of forage yield and soil physical attributes of a Brachiaria decumbens pasture in the Brazilian Cerrado	
Autores: 	Pariz,Cristiano Magalhães; Carvalho,Morel de Passos e; Chioderoli,Carlos Alessandro; Nakayama,Fernando Takayuki; Andreotti,Marcelo; Montanari,Rafael.	
Data: 	2011-10-01	
Ano: 	2011	
Palavras-chave: 	Bulk density; Geostatistics; Gravimetric and volumetric moisture; Mechanical resistance to penetration; Organic matter.	
Resumo: 	The objective of this study was to analyze variability, linear and spatial correlations of forage dry mass yield (FDM) and dry matter percentage (DM%) of Brachiaria decumbens with the bulk density (BD), gravimetric (GM) and volumetric (VM) moisture, mechanical resistance to penetration (RP) and organic matter content (OM), at depths 1 (0-0.10 m) and 2 (0.10-0.20 m), in a Red Latosol (Oxisol), in order to select an indicator of soil physical quality and identify possible causes of pasture degradation. The geostatistical grid was installed to collect soil and plant data, with 121 sampling points, over an area of 2.56 ha. The linear correlation between FDM × DM% and FDM × BD2 was low, but highly significant. Spatial correlations varied inversely and positively, respectively. Except for DM% and BD, at both depths, the other attributes showed average to high variability, indicating a heterogeneous environment. Thus, geostatistics emerges as an important tool in understanding the interactions in pasture ecosystems, in order to minimize possible causes of degradation and indicate better alternatives for soil-plant-animal management. The decrease in FDM and increased BD1 are indicators of physical degradation (compaction) of Red Latosol (Oxisol), particularly in the places with the highest concentration of animals and excessive trampling, in Cerrado conditions, in the municipality of Selvíria, Mato Grosso do Sul State, Brazil.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001000007	
Editor: 	Sociedade Brasileira de Zootecnia	
Relação: 	10.1590/S1516-35982011001000007	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zootecnia  v.40 n.10 2011	
Fonte: 	info:eu-repo/semantics/openAccess