Data/hora: 07/06/2024 11:06:14

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 13/10/2020
Data da última atualização: | 12/04/2021
Autoria: | MACAN, N. P. F.; FERRAREZI, R. S.; MATSURA, E. E.; MAIA, A. de H. N.; XAVIER, M. A.; SILVA, T. P. C. T. da.
Afiliação: | NATALIA PRADO FORTUNA MACAN, Univesity of Florida; RHUANITO SORANS FERRAREZI, University of Florida; EDSON EIJI MATSURA, FEAGRI; ALINE DE HOLANDA NUNES MAIA, CNPMA; MAUTO ALEXANDRE XAVIER, IAC; THOMAZ PENTEADO CYRINO TEIXEIRA DA SILVA, University of Florida.
Título: | Fertilizer recommendations for sugarcane pre-sprouted seedling production in ebb-and-flow subirrigation benches.
Ano de publicação: | 2020
Fonte/Imprenta: | Sugar Tech, v. 22, n. 6, p. 978-986, 2020.
Páginas: | p. 1-9.
ISSN: | 0974-0740
DOI: | https://doi.org/10.1007/s12355-020-00847-6
Idioma: | Inglês
Conteúdo: | Abstract: Ebb-and-flow subirrigation can save water and nutrients by reusing fertilizer solution (FS). Since there is no leaching and salts tend to accumulate over time in the growing media, nutrient concentrations should be lower than applied by other irrigation systems. However, fertilizer requirements for subirrigated sugarcane (Saccharum species hybrid) pre-sprouted seedlings (SPSS) are not yet available. Our objective was to evaluate two FS concentrations to produce SPSS in an ebb-and-flow system: 33% and 67% of the recommended concentrations for seedlings produced using overhead irrigation. We tested three cultivars (IACSP95-5000, IACSP95-5094 and IAC91-1099) in terms of crop growth and macronutrient content of stems and leaves. There was no effect of FS concentrations on 1st ligule height, diameter, and dry weight. Irrigation with both FS concentrations resulted in seedlings with adequate nutritional status. Substrate electrical conductivity (EC) increased for treatment irrigated with FS 67%, indicating excessive fertilization. For FS 33%, substrate EC remained stable. FS with concentration of 33% can be used to produce SPSS in ebb-and-flow benches, resulting in adequate plant growth and fertilizer savings.
Palavras-Chave: | Fertilizer solution; Nutrition guidelines; Soilless production.
Thesagro: | Cana de Açúcar; Fertilizante; Irrigação; Muda.
Thesaurus Nal: | Irrigation; Plant nutrition; Soilless culture; Sugarcane.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16822-1) - UPC - AP - DD -  -  -  - DIS