Data/hora: 13/06/2024 04:34:41

Biblioteca(s): | Embrapa Amazônia Oriental.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | C - 0
Data corrente: | 07/12/2018
Data da última atualização: | 19/05/2022
Autoria: | BRUNO, I. P.; SILVA, A. da; FRANZINI, V. I.; MARCANTE, N. C.; MURAOKA, T.
Afiliação: | Isabeli Pereira Bruno, Instituto Agronômico do Paraná; Alinne da Silva, Universidade Estadual da Região Tocantina do Maranhão; VINICIUS IDE FRANZINI, CPATU; Nericlenes Chaves Marcante, CPAC; Takashi Muraoka, CENA/USP.
Título: | Phosphorus efficiency in brazilian soybean cultivars.
Ano de publicação: | 2018
Fonte/Imprenta: | Journal of Experimental Agriculture International, v. 25, n. 4, p. 1-14, 2018. Article no. JEAI.43230.
DOI: | 10.9734/JEAI/2018/43230
Idioma: | Inglês
Conteúdo: | The primary goal of this study was to evaluate the phosphorus uptake and use efficiency in Brazilian soybean cultivars, besides root morphology and architecture characteristics related to phosphorus uptake, carrying out two greenhouse experiments. The experiment 1 was completely randomised, with 56 treatments (soybean cultivars) and 3 replicates. Experiment 2 was completely randomised design with three replicates, and the ten cultivars (greater and lower efficiency) were selected for this assay according to their ability to absorb phosphorus less available determined in experiment 1. The study was carried out at Center of Nuclear Energy in Agriculture, University of São Paulo, Brazil, between February 2011 and August 2012. The isotopic dilution technique was used in the first experiment to assess the phosphorus availability in the soil and to determine the ability of plants to access labile phosphorus by measuring the specific activity of plants grown in soil labeled with radioactive phosphorus. Nine cultivars showed greater phosphorus uptake and used efficiency. The second experiment evaluated the root morphology and architecture. The cultivars with greater uptake efficiency have root morphology and architecture characteristics that favour acquisition of phosphorus from soil compartments that are inaccessible to other cultivars. Phosphorus uptake by plants was not affected by soybean seeds phosphorus content. Identification of these cultivars is very important because it could enable soybean farming in low fertility soils, reducing fertiliser dependence.
Thesagro: | Fósforo; Soja.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/188023/1/Bruno2542018JEAI43230-.pdf
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (55520-1) - UPC - AP - DD -  -  -  - DIS