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| Cantarella,Heitor; Trivelin,Paulo Cesar Ocheuze; Contin,Teodoro Leonardo Michelucci; Dias,Fábio Luis Ferreira; Rossetto,Raffaella; Marcelino,Rafael; Coimbra,Renato Badran; Quaggio,José Antonio. |
| Legal restrictions from burning sugarcane prior to harvest are causing a sharp increase in acreage which is harvested as green cane. The presence of a thick sugarcane trash mulch left after harvest makes it difficult to incorporate fertilisers in the soil. Since large losses of ammonia may occur when urea is surface applied to trash, it is important to find ways to improve urea-N use efficiency. The urease inhibitor NBPT slows down urea hydrolysis and thus may help decrease ammonia losses. Ammonia traps were set up in seven sugarcane fields covered with trash and fertilised with ammonium sulfate or ammonium nitrate, urea, and NBPT-treated urea. All N fertilisers were surface-applied at rates of 80 or 100 kg N ha-1. Very little N was lost when ammonium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: NBPT; Nitrogen fertilizer; Ammonia losses. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000400011 |
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