Availability of phosphorus in soils under agroecological production in Governador Dix-Sept Rosado, Rio Grande do Norte

• Autor(a) principal: Moura, Isadora Nayara Bandeira Medeiros de
• Data de Publicação: 2017
• Outros Autores: Souza, Carolina Malala Martins, Silva, Ana Carla Rodrigues da, Lima, Rebeca Nairony da Silva, Rêgo, Lunara Gleika da Silva, Ambrósio, Márcia Michelle de Queiroz
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Verde de Agroecologia e Desenvolvimento Sustentavel
• Texto Completo: https://www.gvaa.com.br/revista/index.php/RVADS/article/view/5573
• topic: Match available; Semi-arid; Sustainability; Fósforo disponível; Semiárido; Sustentabilidade.

Soil organic matter is a relevant controller of the amount of available phosphorus (P) in the edaphic system. Compared to the soil itself, organic waste provides greater availability of phosphorus. It is believed that the gradual increase of the P contents is mainly due to the soil source material and to the type of fertilization carried out, where the fertilization of organic origin presents levels three to eleven times higher than those of phosphorus. Therefore, this study sought to evaluate the levels of available phosphorus in areas of agroecological management in different years of cultivation, understanding the influence on the maintenance of soil quality. The study was conducted in Governor Dix-Sept Rosado, Rio Grande do Norte and the soil classified as a Chernossolo Réndzico. Plots with different agroecological management times were selected and samples were taken at two depths: 0-5 and 5-15 cm, corresponding to 1, 6, 8 and 10 years and a native forest area as a control. With reference to the native forest, the maximum levels of P increased in the 10 years of agroecological management in both depths. Areas with organic fertilizer addition and with different management times presented increasing linear P contents during 10 years of cultivation.