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Leaching of nitrogen, potassium, calcium and magnesium in a sandy soil cultivated with sugarcane

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dc.creator Oliveira Mauro Wagner de
dc.creator Trivelin Paulo Cesar Ocheuze
dc.creator Boaretto Antônio Enedi
dc.creator Muraoka Taskashi
dc.creator Mortatti Jeferson
dc.date 2002
dc.date.accessioned 2013-05-30T05:03:22Z
dc.date.available 2013-05-30T05:03:22Z
dc.date.issued 2013-05-30
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000600016
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=0100204X&date=2002&volume=37&issue=6&spage=861
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/3829
dc.description 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.
dc.publisher Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
dc.source Pesquisa Agropecuária Brasileira
dc.subject fertilizers
dc.subject mineral nutrients
dc.subject soil transport processes
dc.subject lysimeters
dc.title Leaching of nitrogen, potassium, calcium and magnesium in a sandy soil cultivated with sugarcane


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