Data/hora: 06/06/2024 09:59:51

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 31/03/2011
Data da última atualização: | 09/05/2018
Autoria: | DIAS, N. M. P.; CAIRES, E. F.; PIRES, L. F.; BACCHI, M. A.; FERNADES, E. A. de N.
Afiliação: | Nivea Maria Piccolomini Dias, Universidade Estadual de Ponta Grossa (UEPG); Eduardo Fávero Caires, UEPG, Departamento de Ciência do Solo e Engenharia Agrícola; Luiz Fernando Pires, Universidade Estadual de Ponta Grossa (UEPG); Márcio Arruda Bacchi, Universidade de São Paulo, Centro de Energia Nuclear na Agricultura; Elisabete Aparecida de Nadai Fernandes, Universidade de São Paulo, Centro de Energia Nuclear na Agricultura.
Título: | Radiological impact of phosphogypsum surface application in a no-till system in Southern Brazil.
Ano de publicação: | 2010
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 12, p. 1456-1464, dez. 2010
Idioma: | Inglês
Notas: | Título em português: Impacto radiológico da aplicação superficial de gesso agrícola em sistema de plantio direto no Sul do Brasil.
Conteúdo: | The objective of this work was to determine the impact of phosphogypsum application on 226Ra and 228Ra activities in the soil and on their accumulation in soybean grains. A field experiment was carried out in Paraná state, Brazil, on a loamy Typic Hapludox, under no-till system, with increasing phosphogypsum rates: 4, 8, and 12 Mg ha-1. Gamma-ray spectrometry was carried out using HPGe detectors with 45 and 10% relative efficiencies, for soybean grains and soil, respectively. No increment of 226Ra and 228Ra activities was observed due to the increase in phosphogypsum rates in the soil, and a small reduction was noticed in the grains. Average values found for 226Ra and 228Ra activities were 37 and 57 Bq kg-1 in the soil and 1.44 and 3.19 Bq kg-1 in soybean grains. The application of phosphogypsum for no-till soybean production is a safe practice regarding the risks of radiation damage to human health.
Palavras-Chave: | 226Ra; 228Ra; Gamma spectrometry; Radioactivity.
Thesagro: | Glycine Max; Radioatividade.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/105572/1/Radiological.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (49534-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS