Data/hora: 04/06/2024 14:21:43

Biblioteca(s): | Embrapa Agrobiologia.
Data corrente: | 30/05/2018
Data da última atualização: | 14/11/2018
Autoria: | CARVALHO, D. F. de; GOMES, D. P.; OLIVEIRA NETO, D. H. de; GUERRA, J. G. M.; ROUWS, J. R. C.; OLIVEIRA, F. L. de.
Afiliação: | DANIEL F. DE CARVALHO, UFRRJ; DANIELA P. GOMES, UFRRJ; DIONIZIO H. DE OLIVEIRA NETO, AGRISTAR DO BRASIL, SP; JOSE GUILHERME MARINHO GUERRA, CNPAB; JANAINA RIBEIRO COSTA ROUWS, CNPAB; FÁBIO L. DE OLIVEIRA, UFES.
Título: | Carrot yield and water-use efficiency under different mulching, organic fertilization and irrigation levels.
Título original: | Produção de cenoura e uso eficiente da água sob cobertura morta vegetal, adubação orgânica e níveis de irrigação.
Ano de publicação: | 2018
Fonte/Imprenta: | Revista Brasileira de Engenharia Agrícola e Ambiental, v. 22, n. 7, p.445-450, 2018.
ISSN: | 1807-1929
Idioma: | Inglês
Conteúdo: | 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.
Palavras-Chave: | Organic agriculture.
Thesaurus Nal: | Castor bean cake; Gliricidia sepium; Irrigation management.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (40751-1) - UPC - AP - DD - 2018.00037 -  - 2018.00037 - DIS