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http://dspace.mediu.edu.my:8181/xmlui/handle/123456789/3829| Title: | Leaching of nitrogen, potassium, calcium and magnesium in a sandy soil cultivated with sugarcane |
| Keywords: | fertilizers mineral nutrients soil transport processes lysimeters |
| Issue Date: | 30-May-2013 |
| Publisher: | Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
| 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. |
| URI: | http://koha.mediu.edu.my:8181/jspui/handle/123456789/3829 |
| Other Identifiers: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000600016 http://www.doaj.org/doaj?func=openurl&genre=article&issn=0100204X&date=2002&volume=37&issue=6&spage=861 |
| Appears in Collections: | Agriculture and Food Sciences |
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