Reducing soluble lead and cadmium in contaminated soils using dairy cattle waste based vermicompost

Continuous use of synthetic fertilizer can lead to the accumulation heavy metals in soil. The organic amendment reduce solubility such as Pb and Cd experiment was undertaken determine decline soluble polluted soils treated with dairy cattle waste-based vermicompost. study used two soil samples; Inceptisols collected from Air Duku Village Entisol Beringin Raya Village, Bengkulu, Indonesia. Entisols contained 2.0 0.4 mg kg-1 0.7 0.8 kg-1soluble Cd, respectively. samples were pretreated either 100 ppm or Cd. Vermicompost applied at rate 0, 10, 20, 30 Mg ha-1 on Entisol, arranged Completely Randomized Design (CRD). mixture incubated for eight weeks. After incubation ended, sample analyzed using DTPA extraction before detection Atomic Absorption Spectroscopy. resulted that significantly reduced vermicompost treatment, being lowest ha-1. Furthermore, decreased more substantial than Entisols. Soluble both lower suggesting a higher retention affinity former. This summarizes effectively immobilizes contaminated soils.