Data/hora: 01/06/2024 05:46:58

Biblioteca(s): | Embrapa Pesca e Aquicultura.
Data corrente: | 14/05/2019
Data da última atualização: | 14/02/2020
Autoria: | OLIVEIRA, S. M. de; PIEROZAN JUNIOR, C.; LAGO, B. C.; ALMEIDA, R. E. M. de; TRIVELIN, P. C. O.; FAVARIN, J. L.
Afiliação: | SILAS MACIEL DE OLIVEIRA, ESALQ; CLOVIS PIEROZAN JUNIOR, INSTITUTO FEDERAL DE EDUCAÇÃO, Palmas-TO; BRUNO COCCO LAGO, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; PAULO CESAR OCHEUZE TRIVELIN, CENA; JOSE LAERCIO FAVARIN, ESALQ.
Título: | Grain yield, efficiency and the allocation of foliar N applied to soybean canopies.
Ano de publicação: | 2019
Fonte/Imprenta: | Scientia Agricola, v. 76, n. 4, p. 305-310, jul./ago. 2019.
ISSN: | 1678-992X
DOI: | 10.1590/1678-992X-2017-0395
Idioma: | Inglês
Conteúdo: | Soybean [Glycine max (L.) Merr.] grain yield is closely associated with the level of optimal nitrogen (N) supply, especially during the reproductive stages. Foliar fertilization with low rates of N have been considered as a strategy for furnishing additional N and enhancing grain yields. Field studies using 15N tracer were conducted over two growing seasons to investigate the impact of foliar N fertilization on grain yield, plant N content, the amount of N derived from fertilizer (NDFF) and N recovery efficiency (NRE). Four foliar N rates (0, 1300, 2600 and 3900 g ha?1) were supplied by two equal split applications at the R1 and R3 stages. Foliar N fertilization of soybean canopies did not affect grain yield, grain N content, shoot N content nor plant N content. Total NDFF was increased from 0.7 to 2.0 kg ha?1 across the N rates. Nonetheless, NRE was unaffected by foliar N fertilization, which averaged 53 %. Soybean plants allocated the same amount of N fertilizer to both grains and shoots. No significant effects of low rate foliar N fertilization were registered on soybean grain yield nor plant N content, despite considerable N fertilizer recovery by plant organs.
Thesagro: | Fertilizante Nitrogenado; Glycine Max; Nitrogênio; Soja.
Thesaurus Nal: | Foliar application; Nitrogen fertilizers; Soybeans.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/197327/1/CNPASA-2019-sa2.pdf
Registro original: | Embrapa Pesca e Aquicultura (CNPASA)
Exemplares: | CNPASA - (798-1) - UPC - AP - DD - CNPASA_AP14 -  - 2019.014 - DIS