Acute toxicity of Diammonium phosphate to earthworm (Eudrilus eugeniae)
Chaudhari Meena S
In the agriculture, soil works as a store house of nutrients required for terrestrial ecosystem but today to meet the demands of increasing population agriculture totally depends on the agrochemicals. Intensive use of agrochemicals definitely caused soil pollution. Among soil biota earthworms play a more significant role in soil ecosystem by taking part in organic matter cycle and modifying the soil structure. Earthworms are also used as an indicator species to diagnose environmental pollution in soil ecosystem. In present study an experiment was conducted to find out the eco-toxicity of Diammonium phosphate on earthworm Eudrilus eugeniae. Different doses of DAP were mixed with soil and the mortality of earthworm Eudrilus eugeniae were recorded. The experiment found that for 96 hours all the earthworms thrived at the dose 100 mg/kg. and LC50 were recorded at the exposure of 400 mg/kg. So it is concluded that earthworms were affected by the use of Diammonium phosphate. So proper care should be taken when DAP is used in agricultural field.