Impactos ambientais da fertilização orgânica em sistemas agropecuários na região sul-brasileira.

• Autor(a) principal: Carvalho, Nathália Leal
• Data de Publicação: 2014
• Outros Autores: Hentz, Paulo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Eletrônica em Gestão Educação e Tecnologia Ambiental (REGET)
• Texto Completo: https://periodicos.ufsm.br/reget/article/view/12367
• topic: Leaching; Nitrification inhibitors; Lixiviação; Inibidores de Nitrificação

The application of organic fertilizers allows greater concentration of P in the nutrient topsoil, however, this shift to the deeper layers occurs slowly, especially on clay soil with higher binding sites. The application of organic fertilizer in liquid form when injected into grooves and applied in bands reduce the emission of NH3-N, but raise the rate of denitrification, as well as the largest increase in concentration of localized form allows the accumulation of N-NO3- before to be absorbed by plants. The application of organic fertilizers on straw hinders tillage fertilizer-soil contact and access to microorganisms for subsequent immobilization that may favor volatilization losses and lower utilization by plants. Increasing doses of organic fertilizer promotes greater microbial activity, which is often measured by higher CO2 emissions, with the highest rate of release occurs soon after soil application.