Data/hora: 01/06/2024 01:00:39

Provedor de dados: 	90	
País: 	Brazil	
Título: 	Physical properties of a rhodic haplustox under two sugarcane harvesting systems	
Autores: 	Machado,Walquíria; Telles,Tiago Santos; Tavares Filho,João; Guimarães,Maria de Fátima; Alves,Grace Bungenstab; Borges,José Luiz Bernardo.	
Data: 	2010-12-01	
Ano: 	2010	
Palavras-chave: 	Saccharum officinarum; Soil bulk density; Porosity; Soil penetration resistance; Soil aggregate stability.	
Resumo: 	This study had the purpose of evaluating the effects of two management types of sugarcane: harvesting of burnt cane (BCH) and mechanized harvesting of unburnt green cane (MCH), on some soil physical properties of a dystrophic Rhodic Haplustox. The data were then compared with results for the same soil type under native forest. A completely randomized design was used, with three treatments and 20 replications. The following characteristics were determined: organic matter, aggregate stability, soil bulk density, and porosity at depths of 0-0.20 m and soil penetration resistance. After 15 years of cultivation, there were some alterations in the soil under cane burnt before harvesting, evidenced by a drop in the weighted average diameter of stable aggregates in water and increased soil bulk density. Significant changes were also detected in total porosity and pore distribution under both harvesting systems. Critical values for penetration resistance were observed in the area under mechanized sugar cane harvesting, with a value of 4.5 MPa in the 40-55 cm layer. This value is considered high and could indicate compaction and restriction of root growth. Soil properties under the green cane (unburned) management system were closest to those of the soil under native forest.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000600004	
Editor: 	Sociedade Brasileira de Ciência do Solo	
Relação: 	10.1590/S0100-06832010000600004	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Ciência do Solo  v.34 n.6 2010	
Fonte: 	info:eu-repo/semantics/openAccess