Data/hora: 05/06/2024 07:56:47

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	26/11/1992	
Data da última atualização: 	29/10/2004	
Autoria: 	SFREDO, G. J.; SARRUGE, J. R.; CAMPO, R. J.	
Afiliação: 	EMBRAPA-CNPSo. Londrina, PR.	
Título: 	Accumulation of macronutrientes by two sunflower (Helianthus annuus L.) cultivars under field conditions.	
Ano de publicação: 	1985	
Fonte/Imprenta: 	In: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985, Mar del Plata. Actas... Mar del Plata: ASAGIR/ISA, 1985.	
Volume: 	t.1	
Páginas: 	p.189-194.	
Idioma: 	Inglês	
Conteúdo: 	In order to study the accumulation of the macronutrients by sunflower plants a field experiment was carried out at the "National Center for Soybean Research", Londrina, PR, Brazil. Six fertilizers doses of NPK were used but in the present paper only the dose 0-0-0 was examined. Samples of plants were harvested from 14 days after emergence to the end of the plant cycle. The authors concluded: the maximum accumulation occurs on 73 and 82 days after emergence for leaves and stems, and 90 and 100 days for seeds and receptacle; the maximum accumulation of the macronutrients for a production of 1,000 kg of seeds was K = 131 kg; N = 81 kg; Ca = 60 kg; Mg = 19 kg; P = 13 kg and S = 4 kg; the exportation of the macronutrients correspondent to a production of 1,000 kg of seeds were N = 32 kg; K = 10 kg: P = 6 kg; Mg = 3 kg; Ca = 2 kg and S = 1 kg.	
Palavras-Chave: 	Brasil; Cultivar; Fertilizer; Macronutrient; Macronutriente; Parana; Sunflower; Variety.	
Thesagro: 	Fertilizante; Girassol; Helianthus Annuus.	
Thesaurus Nal: 	Brazil.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)