Availability and leaching of nitrogen in two typical soils of Pontes e Lacerda, MT, treated with bovine rumen residue

• Autor(a) principal: Silva, Fernando Luiz
• Data de Publicação: 2013
• Outros Autores: Pierangeli, Maria Aparecida Pereira, Trautmann-Machado, Raquel Joana
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Semina. Ciências Agrárias (Online)
• Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/10576
• topic: Argisol; Latosol; Nitrate; Organic waste.; Argissolo; Latossolo; Nitrato; Resíduo orgânico.

High production of waste during the slaughter of cattle increases the need to promote their correct utilization. In this study, the availability and leaching of nitrogen (NO3- and NH4+) after bovine rumen residue (BRR) incorporation was evaluated in 2 typical soils of Pontes e Lacerda, MT: a distrophic Red Latosol and a eutrophic Yellow-Red Argisol. The experiment was conducted in a greenhouse at the University of State of Mato Grosso, UNEMAT, between December 2009 and March 2010. The samples were undisturbed soil in PVC tubes (length 40 cm; diameter, 10 cm), in which doses of BRR were added to provide 0, 50, 100, and 400 kg N ha-1 and urea was added to provide 400 kg N ha-1. Each treatment was performed using 4 replicates. The columns were irrigated weekly, and the leachate was collected and stored for analysis. After the experiment, soil samples were collected from 10 to 10 cm and the NO3- and NH4+ concentrations were determined. The use of BRR resulted in higher potential availability of N in distrophic Red Latosol, while in the eutrophic Yellow-Red Argisol, BRR could not supply adequate amount of nitrogen to the soil within the study period. In terms of N leaching, the distrophic Red Latosol has higher retention capacity for NO3- and lower retention capacity for NH4+ than eutrophic Yellow-Red Argisol; however, the levels of NO3- and NH4+ in the leachate collected from the 2 soils were within the standard values established by Resolution Conama 357/2005. The use of BRR as compared to the use of urea resulted in a lower risk of leaching N.