Data/hora: 12/06/2024 04:20:36

Provedor de dados: | 70
País: | Brazil
Título: | Spatial variability of mechanical resistance to penetration evaluated with mobile unit on haplic vertisol cultivated with mango
Autores: | Cortez,Jorge W.; Lopes,Hélio L.; Coelho,Daniela S.; Arcoverde,Sálvio N. S.
Data: | 2014-04-01
Ano: | 2014
Palavras-chave: | Soil compaction; Machinery traffic; Agricultural mechanization.
Resumo: | Since the advent of mechanized farming and intensive use of agricultural machinery and implements on the properties, the soil began to receive greater load of machinery traffic, which can cause increased soil compaction. The aim of this study was to evaluate the spatial variability of soil mechanical resistance to penetration (RP) in the layers of 0.00-0.10, 0.10-0.20, 0.20-0.30 and 0.30-0.40m, using geostatistics in an area cultivated with mango in Haplic Vertisol of the northeastern semi-arid, with mobile unit equipped with electronic penetrometer. The RP data was collected in 56 points from an area of 3 ha, and random soil samples were collected to determine the soil moisture and texture. For RP data analysis we used descriptive statistics and geostatistics. The soil mechanical resistance to penetration presented increased variability, with adjustment of the spherical and exponential semivariograms in the layers. We found that 42% of the area in the layer of 0.10-0.20m showed RP values above 2.70 MPa. Maximum values of RP were found in the layer of 0.19-0.27m, predominantly in 56% of the area.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000200006
Editor: | Associação Brasileira de Engenharia Agrícola
Relação: | 10.1590/S0100-69162014000200006
Formato: | text/html
Fonte: | Engenharia Agrícola  v.34 n.2 2014
Fonte: | info:eu-repo/semantics/openAccess