Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/107417
Unidade da Embrapa/Coleção:: Área de Informação da Sede - Artigo em periódico indexado (ALICE)
Data do documento: 11-Jun-2002
Tipo do Material: Artigo em periódico indexado (ALICE)
Autoria: OLIVEIRA, M. W. de
TRIVELIN, P. C. O.
BOARETTO, A. E.
MURAOKA, T.
MORTATTI, J.
Título: Leaching of nitrogen, potassium, cacium and magnesium in a sandy soil cultivated with sugarcane.
Edição: 2002
Fonte/Imprenta: Pesquisa Agropecuária Brasileira, Brasília, v. 37, n.6, p.861-868, jun.2002.
Idioma: en
Palavras-chave: mineral nutrients.
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.
NAL Thesaurus: fertilizers
lysimeters
soil transport processes.
Ano de Publicação: 2002
Aparece nas coleções:Artigo em periódico indexado (AI-SEDE) / Embrapa Informação Tecnológica (SCT)

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