The objective of this study was to evaluate rates of tannery sludge on the nodulation and the control of nematodes in soybean. Increasing rates of sludge (0; 5.0; 10.0; 20.0; 40.0;and 80.0 Mg ha-1) were applied into the soil. Soil was infested with 5,000 eggs of Meloidogyne spp. after soybean sowing. Seventy days later, in a greenhouse, nodulation, dry mass of the shoots and nematode reproduction in the roots were evaluated. The application of tannery sludge in the soil in higher doses reduced nematode reproduction in the roots of soybean. However, the increase in sludge concentration in the soil reduced nodulation and showed no benefit to plant growth.
Nematode; residue; recycling
