Data/hora: 12/06/2024 14:31:55

Provedor de dados: 	Bragantia	
País: 	Brazil	
Título: 	Penetration resistance according to penetration rate, cone base size and different soil conditions	
Autores: 	Junior,Daniel Dias Valadão; Biachini,Aloísio; Valadão,Franciele Caroline Assis; Rosa,Rodrigo Pengo.	
Data: 	2014-06-01	
Ano: 	2014	
Palavras-chave: 	Soil bulk density; Soil moisture; Methodology.	
Resumo: 	This study aimed to evaluate the effect of penetration rate and the size of the cone base on the resistance to penetration under different soil moistures and soil bulk density. The experimental design was completely randomized in a 4x2x2x2 factorial arrangement, with the factors, soil bulk density of 1.0; 1.2; 1.4 and 1.6 Mg m-3, soil moisture at the evaluation of 0.16 and 0.22 kg kg-1, penetration rates of 0.166 and 30 mm s-1 and areas of the cone base of 10.98 and 129.28 mm² resulting in 32 treatments with 8 replicates. To ensure greater uniformity and similarity to field conditions, samples passed through cycles of wetting and drying. Only the interaction of the four factors was not significant. Resistance values varied with the density of the soil, regardless of moisture and penetration rate. Soil penetration resistance was influenced by the size of the cone base, with higher values for the smallest base independent of moisture and soil bulk density. The relationship between resistance to penetration and moisture is not always linear, once it is influenced by soil bulk density. Reduction in the area of the cone leads to an increase in the soil resistance to penetration.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200012	
Editor: 	Instituto Agronômico de Campinas	
Relação: 	10.1590/brag.2014.013	
Formato: 	text/html	
Fonte: 	Bragantia  v.73 n.2 2014	
Fonte: 	info:eu-repo/semantics/openAccess