The effect of vermicompost application on yield and nutrient concentration of oily rose

The purpose of this study was to assess the feasibility of utilizing vermicompost to improve the yield and nutritional status of oily rose (Rosa damascena Mill.), an agricultural product peculiar to Isparta province with high added value. Four different doses (V0: 0 kg ha-1, V1: 1000 kg ha-1, V2: 2000 kg ha-1, and V3: 3000 kg ha-1) of vermicompost were tested in the field conditions at 3 replicates. Vermicompost was applied to the canopy projection area and incorporated into the soil. Flower harvest was started on April 30, 2018, and continued for 20 days. The bloomed flowers were collected and weighed daily basis. Following the harvest, leaf samples were collected from the plants and the concentrations of certain macro and micro nutrients were assessed. The study's findings demonstrated that applying vermicompost boosted the yield of oily rose blooms. The greatest yield value was determined to be 5850 kg ha-1 at a vermicompost dose of 2000 kg ha-1, which was 660 kg ha-1 greater than the control application. Application of vermicompost had little influence on plant nutrient contents. This condition is assumed to be related to the removal of minerals from the plant during harvest. Based on the overall findings of the thesis, it has been determined that the application of vermicompost will benefit the economy of rose agriculture in general, and a dose of 2000 kg ha-1 may be recommended.