Investigation of Physicochemical and Biological Factors Changes on the Production of Vermicompost by using Cow Manure and Earthworm Eisenia foetida

Vermicompost is one the valuable fertilizer which produced by certain species of earthworms during the process of biological degradation of organic wastes. This fertilizer is an odorless and highly nutritious and organic product with high capability of soil amendment. the proposes of the study were; the product of Vermicompost by Eisenia foetida earthworms and cow manure, the investigation of change physicochemical and biological parameters in the vermicompost production process, and also, the description of optimal production point for worms.The relationship between the parameters in vermicomposting correlation test using spss software version 22 was used. the parameters including temperature, pH, electrical conductivity, moisture content, number cocoon and worm, cocoon and worm weight, percentage of carbon, nitrogen and phosphorus were measured in the four months of composting, The results showed that in studied conditions the number of cocoon 7/3 equal, weight cocoon 7/2 equal, the number worms of 1/2 equal and weight worm 2/08 was equal. EC Product 3/4 Ms/cm, carbon percent 11/8, the amount of phosphorus and nitrogen 4/18 g/kg and 0/2 g/kg, respectively. Microbial contamination due to organic waste through the digestive tract of earthworms, and analyze them dropped. Considering results, biological parameters such as the number of cocoons, weight of cocoons and the number of worms, weight of worms, in during of Composting process significantly increased. So physicochemical and biological conditions which established in this study lead to appropriate production of vermicompost and optimize the worm production.