Data/hora: 23/06/2024 21:05:23

Biblioteca(s): 	Embrapa Unidades Centrais.	
Data corrente: 	11/06/2002	
Data da última atualização: 	07/11/2018	
Autoria: 	OLIVEIRA, M. W. de; TRIVELIN, P. C. O.; BOARETTO, A. E.; MURAOKA, T.; MORTATTI, J.	
Afiliação: 	Mauro Wagner de Oliveira, Universidade Federal de Viçosa - UFV/Centro de Pesquisa e Melhoramento de Cana-de-Açúcar; Paulo Cesar Ocheuze Trivelin, Universidade de São Paulo - USP/Centro de Energia Nuclear na Agricultura - Cena; Antônio Enedi Boaretto, Universidade de São Paulo - USP/Centro de Energia Nuclear na Agricultura - Cena; Taskashi Muraoka, Universidade de São Paulo - USP/Centro de Energia Nuclear na Agricultura - Cena; Jeferson Mortatti, Universidade de São Paulo - USP/Centro de Energia Nuclear na Agricultura - Cena.	
Título: 	Leaching of nitrogen, potassium, cacium and magnesium in a sandy soil cultivated with sugarcane.	
Ano de publicação: 	2002	
Fonte/Imprenta: 	Pesquisa Agropecuária Brasileira, Brasília, DF, v. 37, n. 6, p. 861-868, jun. 2002	
Idioma: 	Inglês	
Notas: 	Título em português: Lixiviação de nitrogênio, potássio, cálcio e magnésio em solo arenoso cultivado com cana-de-açúcar.	
Conteúdo: 	A lysimeter experiment was carried out with sugarcane aiming to evaluate the leaching of nitrogen derived from either urea (15N) or the soil/sugarcane crop residues. The leaching of K+, Ca2+, and Mg2+ was also evaluated. The experiment was a factorial 2x4. The influencing factors were: firstly, the differential addition of two kinds of sugarcane remains to the soil, simulating conditions of cane- plantation renewal after the cane crop harvest, with and without previous straw removal by burning; secondly, four doses of N: 0, 30, 60, and 90 kg ha-1. During the experimental period the total volume of water received by the sugarcane-soil system was 2,015 mm, with 1,255 mm as precipitation and 760 mm as irrigation. The loss of N by leaching from the fertilizer (15N) was not detected. In the first three weeks the largest losses of N by leaching occurred, originating from the soil/sugarcane remains-N. The mean of leached N during the experimental period of 11 months was of 4.5 kg ha-1. The mean losses of K+, Ca2+, and Mg2+ were of 13, 320 and 80 kg ha-1, respectively.	
Palavras-Chave: 	mineral nutrients.	
Thesaurus Nal: 	fertilizers; lysimeters; soil transport processes.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/22476/1/pab20_278.pdf	
Registro original: 	Embrapa Unidades Centrais (AI-SEDE)	
Exemplares: 	AI-SEDE - (22476-1) - UPE - AP - PP - 63072081 - P474 -  - DIS