Abstract

• Organic fertilizers were prepared from the selected materials such as wastes of vegetables, cow dung, sesame meal cake, rice straw and the prepared EM solution under aerobic and anaerobic conditions. To know the effect of lime on the prepared fertilizers, quick lime powder was used. The aerobic digesters (4' × 6'× 0.75') were used in aerobic conditions. The anaerobic digesters (11.5˝ × 13.5˝) were used in anaerobic conditions. The successive layers of selected materials were done and prepared EM solution was added over the layers. Organic fertilizers were performed by composting. The elemental contents of prepared organic fertilizers were determined by Energy Dispersive X-Ray Fluorescence (EDXRF) spectroscopic method. The physical properties, the moisture contents and pH values of prepared organic fertilizers were determined. The total nitrogen, total phosphorus and total potassium contents of the prepared organic fertilizers were determined by instrumental methods. The amount of organic carbon and organic matter of the prepared organic fertilizers were also determined. The properties of prepared aerobic organic fertilizers were compared with anaerobic organic fertilizers. To show the effect of the prepared organic fertilizers, the plantations on those of vegetables such as Chinese cabbage, lettuce and radish were carried out by using four kinds of prepared organic fertilizers and the plant growth was compared.