Data/hora: 23/09/2024 00:39:08

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