| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Leaching of nitrogen, potassium, calcium and magnesium in a sandy soil cultivated with sugarcane
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| Autores: |
Oliveira,Mauro Wagner de
Trivelin,Paulo Cesar Ocheuze
Boaretto,Antônio Enedi
Muraoka,Taskashi
Mortatti,Jeferson
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| Data: |
2002-06-01
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| Ano: |
2002
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| Palavras-chave: |
Fertilizers
Mineral nutrients
Soil transport processes
Lysimeters
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| Resumo: |
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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000600016
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2002000600016
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.37 n.6 2002
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| Direitos: |
info:eu-repo/semantics/openAccess
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