Contamination of soil and pineapple fruits under fertilization with sewage sludge

• Autor(a) principal: Mauro Franco Castro Mota
• Data de Publicação: 2018
• Outros Autores: Rodinei Facco Pegoraro, Silvânio Rodrigues dos Santos, Victor Martins Maia, Regynaldo Arruda Sampaio, Marcos Koiti Kondo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFMG
• Texto Completo: https://doi.org/10.1590/1807-1929/agriambi.v22n5p320-325; http://hdl.handle.net/1843/42255
• topic: Biossólido; Abacaxi; Ananas comosus var. comosus; Solos; Lodo de esgoto; Matéria orgânica; Abacaxi - Cultivo; Abacaxizeiro; Adubação orgânica

Sewage sludge is rich in organic matter and nutrients for the plants, and can be used in pineapple production, but there are few studies with scientific evaluation of possible inorganic and biological contaminants in pineapple plantations. In view of the above, this study aimed to evaluate the contamination of the soil and in fruits of pineapple fertilized with sewage sludge. The study was conducted in the municipality of Janaúba-MG. Treatments were arranged in a randomized block design, with four replicates, in a 2 x 5 factorial scheme, consisting of two different fertilizers: sewage sludge (SS) and mineral fertilizers (MF), and five pineapple varieties (Pérola, Vitória, Smooth Cayenne, MD-2, Fantastic IAC). Nitrogen was adopted as the base element to calculate the sewage sludge dose in the pineapple crop. Fertilization with sewage sludge increased the Zn and Cu contents in the soil and the Zn content in the leaves of the pineapple plants. Sewage sludge did not change the contents of As, Pb, Ba, Cu and Zn in the fruit, and Cr, Ni and Cd contents were not detected by the method used. Pineapple fruits did not show microbiological contamination above the limits established by the Brazilian legislation.