Soil pH, electric conductivity and organic matter after three years of consecutive amendment of composted tannery sludge
Ademir Sérgio Ferreira Araújo1*, Maria Dorotéia Marçal Silva1, Luiz Fernando Carvalho Leite2, Fabio Fernando de Araujo3 and Nildo da Silva Dias4
1Federal University of Piauí, Agricultural Science Center, Soil Quality Laboratory, Campus da Socopo, CEP 64000-000, Teresina, PI, Brazil.
2Embrapa Mid-North, Av. Duque de Caxias, Teresina, PI, Brazil.
3UNOESTE, Campus II, Presidente Prudente, SP, Brazil.
4Federal University of Semi-Arid, UFERSA, Mossoró, RN, Brazil.
Email: [email protected]