Data/hora: 19/06/2024 13:22:48

Biblioteca(s): | Embrapa Pesca e Aquicultura.
Data corrente: | 03/09/2020
Data da última atualização: | 04/09/2020
Autoria: | PIEROZAN JUNIOR, C.; FAVARIN, J. L.; LAGO, B. C.; ALMEIDA, R. E. M. de; OLIVEIRA, S. M. de; TRIVELIN, P. C. O.; OLIVEIRA, F. B.; GILABEL, A. P.
Afiliação: | CLOVEIS PIEROZAN JUNIOR, INSTITUTO FEDERAL DO PARANÁ, Campus Palmas-TO; JOSE LAERCIO FAVARIN, ESALQ; BRUNO COCCO LAGO, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; SILAS MACIEL DE OLIVEIRA, UNIVERSIDADE ESTADUAL DE MARINGÁ; PAULO CESAR OCHEUZE TRIVELIN, CENA; FELIPE BRENDLER OLIVEIRA, ESALQ; AMANDA PRADO GILABEL, ESALQ.
Título: | Nitrogen fertilizer recovery and partitioning related to soybean yield.
Ano de publicação: | 2020
Fonte/Imprenta: | Journal of Soil Science and Plant Nutrition, 2020.
ISSN: | 0718-9508
DOI: | https://doi.org/10.1007/s42729-020-00322-x
Idioma: | Inglês
Notas: | Published: 24 August 2020.
Conteúdo: | This study checked the nitrogen (N) uptake, fate of the N fertilizer, fertilizer recovery efficiency (FRE) and the residual amount of N fertilizer in the soil via 15N-labelled fertilizer applied to soybean (Glycine max L. Merr.), to explain any differences in the yields. Two soybean field experiments were established in Brazil, one conducted in a tropical (Trop) zone located at Cerrado Biome and the other in a subtropical (Subt) environment. The experimental design was a 2-factor in randomized complete block with four replications. Five doses of N (0, 20, 40, 80 and 120 kg ha&#8722;1) were applied at two soybean growth stages (VE and R3). For all treatments, except No-N, 15N-labelled fertilizer was used. The N uptake and the amount of N fertilizer were analysed in the roots, shoots, grains and whole plant, the FRE and yield by soybean, and the residual of fertilizer in the soil. The total N uptake (Nplant) was greater with fertilization at R3 stage compared to the other stage, and N application increased the yield just at this stage and in the Trop condition. The increase in N shoot (not specifically from fertilizer) with the application at R3 appeared to be related to the increased in yield. However, the N from fertilizer found in the plant shoot was about 20% higher when fertilizer was applied at VE compared with R3. Under Subt condition, the FRE averaging 55%. In contrast, the FRE decreased from low to high nitrogen rates (64 to 40%, respectively) when soybean grown under Trop condition. Most N from fertilizer (38%) was found in the grains, followed by the shoot (14.6%) and the root (0.58%). The use of N fertilizer at reproductive growth stages is a better approach to meet soybean N demand through N fertilization. Potential yield gains are more reliable under Trop condition.
Thesagro: | Fertilizante Nitrogenado; Glycine Max; Nitrogênio; Soja; Solo Tropical.
Thesaurus Nal: | Nitrogen; Nitrogen fertilizers; Soybeans; Tropical agriculture.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Pesca e Aquicultura (CNPASA)
Exemplares: | CNPASA - (928-1) - UPC - AP - DD - 2020 -  - 2020 - DIS