Data/hora: 02/06/2024 08:52:33

Provedor de dados: | 70
País: | Brazil
Título: | Soil water evaporation under densities of coverage with vegetable residue
Autores: | Gava,Ricardo; Freitas,Paulo S. L. de; Faria,Rogério T. de; Rezende,Roberto; Frizzone,José A.
Data: | 2013-02-01
Ano: | 2013
Palavras-chave: | Wheat straw; Soil coverage; Water losses.
Resumo: | This study was conducted at the Agronomic Institute of Paraná (IAPAR) in Londrina, State of Paraná (PR), Brazil (latitude 23º18'S, longitude 51º09'W and average altitude of 585 m). The local climate, according to the classification of Köeppen, is Cfa type, i.e., humid subtropical climate, with rain in all seasons and can occur dry seasons during the winter. It was determined soil evaporation (E) under different coverage densities with residue from the wheat crop. The treatments were installed in weighting lysimeters of 2.66 m² and 1.3 m deep, which allows to determine E by the mass difference with measuring precision of 0.1mm at one hour intervals. Treatments consisted of 0; 2.5; 5 and 10 t ha-1 of wheat crop residues, placed evenly over each lysimeter. In the first cycle (September 22nd to October 20th, 2008), the reduction of E, as compared to a bare soil, was 4; 15 and 24%, while in the second cycle (December 1st to 30th, 2008), the reduction was of 15; 22 and 25%, respectively, for the treatments of 2.5; 5 and 10 t ha-1.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100010
Editor: | Associação Brasileira de Engenharia Agrícola
Relação: | 10.1590/S0100-69162013000100010
Formato: | text/html
Fonte: | Engenharia Agrícola  v.33 n.1 2013
Fonte: | info:eu-repo/semantics/openAccess