Data/hora: 09/06/2024 09:05:08

Provedor de dados: | 70
País: | Brazil
Título: | Potassium distribution in drip irrigation with fertigation for different injection distances in the main line
Autores: | Bomfim,Guilherme V. do; Manzano,Juan; Azevedo,Benito M. de; Vasconcelos,Denise V.; Viana,Thales V. de A.
Data: | 2014-12-01
Ano: | 2014
Palavras-chave: | Uniformity; Chemigation; K2O.
Resumo: | The purpose of this research was to evaluate the K2O distribution uniformity by surface drip irrigation at Universitat Politecnica de Valencia, Valencia, Spain (39º 29′ N, 0º 23′ W, 20 m). The irrigation was performed by drip lines with not-compensated emitters, spaced 0.3 m. The fertigation was realized using a fertilizer injector pump of electric action with injection of 0.25 h. The experimental design used completely randomized blocks with five treatments and four replications. The treatments consisted of injection in five distances, located at 10; 20; 30; 40; 50 m of the first drip line. Samples were collected in emitters located at the start, at 1/3, at 2/3 and at the end of the drip lines. The nutrient concentration was determined by flame spectrophotometry. The Christiansen's uniformity coefficients (CUC), of distribution (DUC), of statistical (SUC) and of emission (eUC) were estimated. The K2O concentration and distribution decreased linearly with the increase of the injection distance. In all treatments, the CUC, SUC and DUC were described as 'excellent'. The eUC was described as 'recommended' only at smaller injection distances.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600011
Editor: | Associação Brasileira de Engenharia Agrícola
Relação: | 10.1590/S0100-69162014000600011
Formato: | text/html
Fonte: | Engenharia Agrícola  v.34 n.6 2014
Fonte: | info:eu-repo/semantics/openAccess