Study of earthworm Eisenia fetida and its effects on chemical properties of produced vermicompost in different plant waste

In order to Study of different plant waste on produced vermicompost and Replication and Performance of earthworm, an experiment was carried out in completely randomized design during 90 days in Gonbad- e- Kavous University at 2013. Treatments were: pure cow manure (control), manure Palm Leaf (75 : 25), manure Palm Leaf (50:50), manure Palm Leaf (25 : 75), manure potato (75 : 25%), manure potato (50: 50), cow dung cabbage (75 : 25) and cow dung cabbage (50:50), respectively. Diversity and productivity levels and final weight were studied. Chemical changes produced by worms such as PH and EC levels before and after vermicompost production, carbon and total nitrogen and carbon to nitrogen ratio (C/N) were measured. The results showed that there were significant differences between treatments in terms of reproduction ratio and efficiency, and final weight of all chemical characteristics. Reproduction and efficiency ratio with palm leaf and manure mixture treatment (50:50) and manure mixed with potato (50:50) were maximum and minimum ratio and average 35.45 and 1.83 respectively. The total carbon content in the control treatment was the highest and lowest of manure mixed with cabbage. The maximum and minimum amounts of nitrogen were recorded in treatments of manure mixed with potato and cabbage ratio (75: 25) with 3.08 and 1.83 percent, respectively. Chemical properties analysis of before and after production of vermicompost showed that EC increased in all treatments as compared with before and pH has been reduced.