Data/hora: 23/06/2024 13:11:28

Biblioteca(s): | Embrapa Agrobiologia; Embrapa Unidades Centrais.
Data corrente: | 13/11/2019
Data da última atualização: | 26/11/2019
Autoria: | ARAUJO, E. da S.; SILVA, B. F. da; DALLA CHIEZA, E.; URQUIAGA, S.; GUERRA, J. G. M.; ROUWS, J. R. C.; ESPINDOLA, J. A. A.
Afiliação: | EDNALDO DA SILVA ARAUJO, CNPAB; BARBARA FERNANDA DA SILVA, UFFRJ; EMERSON DALLA CHIEZA, UFMA; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; JOSE GUILHERME MARINHO GUERRA, CNPAB; JANAINA RIBEIRO COSTA ROUWS, CNPAB; JOSE ANTONIO AZEVEDO ESPINDOLA, CNPAB.
Título: | Comparison of 15N isotope methods to determine the recovery efficiency of nitrogen from green manure.
Ano de publicação: | 2019
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, v. 54, e00721, 2019
ISSN: | 1678-3921
DOI: | 10.1590/S1678-3921.pab2019.v54.00721
Idioma: | Inglês
Notas: | Título em Português: Comparação de métodos isotópicos de 15N na determinação da eficiência de recuperação do nitrogênio da adubação verde
Conteúdo: | The objective of this work was to compare three methods of 15N isotope application to the soil in order to determine the recovery efficiency of nitrogen derived from green manure by corn (Zea mays). The used experimental design was a randomized complete block with six replicates. The treatments consisted of three 15N isotope methods: indirect method I, isotope dilution with 15N-labelled synthetic fertilizer applied through a small hole next to each corn plant; indirect method II, isotope dilution with 15N-labelled synthetic fertilizer spread in the furrow next to the corn planting row; and direct method, application of a legume straw as green manure, treated with 2.23% excess 15N. The green manure used was jack bean (Canavalia ensiformis). Applying synthetic 15N to the soil (indirect methods I and II) did not interfere in the estimation of the recovery efficiency of N derived from green manure. The recovery efficiency of N from green manure was 17% for the indirect methods, overestimated when compared with that of 7% for the direct method. The direct method is the most adequate to determine the recovery efficiency of N from green manure.
Palavras-Chave: | Biological nitrogen fixation; Fixação biológica de nitrogênio.
Thesagro: | Leguminosa; Zea Mays.
Thesaurus Nal: | Legumes.
Categoria do assunto: | S Ciências Biológicas

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/204637/1/Comparison-of-15N-isotope.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/204871/1/Comparison-of-15N-isotope.pdf

Registro original: | Embrapa Agrobiologia (CNPAB)

Exemplares:

CNPAB - (41260-1) - UPC - AP - DD -  -  -  - DIS
AI-SEDE - (64243-1) - UPE - AP - DD -  -  -  - DIS