Data/hora: 12/06/2024 20:29:15

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