LAUSR

The organic fertilizers such as urban wet-waste compost and vermicompost can improve the physicochemical properties of soil and have a favourite effect on plants growth due to the high nutrient content, high water holding capacity, plant growth regulators, and beneficial microorganisms. In this regard, this study was conducted to evaluate the organic fertilizer mixture on the physiological and morphological indices of tomato seedlings under greenhouse conditions. The experiment was done as factorial in a completely randomized design with 3 replications. The evaluated factors included the vermicompost fertilizer (0, 10, 20, 30 wt %), and the urban wet-waste compost (0, 10, 20, 30 wt %). In evaluation of the simple-effects of vermicompost and urban wet-waste compost the results showed that the 30 wt % level compared to the control sample increased the leaf area (+12.28% and +9.33%). It also increased the number of leaves (+17.5% and +22.9%), dry weight of root (+17.3% and +16.9%), chlorophyll-b content (+4.9% and +12.3 %), carotenoids (+2.9% and +7.9 %), and the total chlorophyll content (+23.7% and +13.8%). Results of evaluating the treatments showed that the vermicompost and urban wet-waste compost mixture in 30 wt % level (V4C4) caused significant increase in the plant height, leaf dry weight, root length, relative water content, cell membrane stability coefficient, efficiency of photochemical performance of PSII and the chlorophyll-a content (compared to other treatments especially low levels of organic fertilizer consumption). According to the final results of this study, using the vermicompost and urban wet waste compost mixture in 30 wt % level is recommended to improve the morphological and physiological traits of tomato in greenhouse conditions .