Data/hora: 04/06/2024 15:00:27

Provedor de dados: | 91
País: | Brazil
Título: | Carrot yield and water-use efficiency under different mulching, organic fertilization and irrigation levels
Autores: | Carvalho,Daniel F. de; Gomes,Daniela P.; Oliveira Neto,Dionizio H. de; Guerra,José G. M.; Rouws,Janaína R. C.; Oliveira,Fábio L. de.
Data: | 2018-07-01
Ano: | 2018
Palavras-chave: | Irrigation management; Gliricidia sepium; Castor bean cake; Daucus carota L.; Organic agriculture.
Resumo: | ABSTRACT This study was carried out to evaluate the contributions to the optimization of water use in a carrot crop under different forms of mulch using Gliricidia sepium, fertilization with castor bean cakes and irrigation water depths. The experiment was conducted in Seropédica, RJ, Brazil (22º 46’ S and 43º 41’ W), from June to September 2010. The experiment was conducted using a split-split-plot scheme (5 x 3 x 2), with four replicates. The five plots had irrigation depths corresponding to 0, 43, 72, 100 and 120% of crop evapotranspiration (ETc); the three subplots contained the different forms of mulch (whole leaves (WL) and chopped leaves and branches (CLB)) and the absence of mulch (AM); and the two sub-subplots contained either the presence (PF) or absence of fertilization (AF). Using time domain reflectometry (TDR) in the irrigation management, water depths ranging from 67.8 to 285.5 mm were applied. The use of mulch in association with fertilization led to higher yields and water-use efficiency (WUE) of the carrot plants, and the mulch composed of WL performed best. The application of irrigation depths corresponding to 97% of ETc promoted the highest carrot yields, although the highest values of WUE were observed, with irrigation depths corresponding to a range from 51 to 68% of ETc.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000700445
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/1807-1929/agriambi.v22n7p445-450
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.22 n.7 2018
Fonte: | info:eu-repo/semantics/openAccess