A field experiment was carried out in Agricultural Research Station, Ferdowsi University of Mashhad, Iran during the season, 2011 to evaluate the vegetative growth yield quantity of tomatoes as affected by different organic fertilizers addition. The experiment was a randomized complete block design with three replications. The results showed that addition of organic fertilizers at rate of 20 ton.ha-1 significantly (at P <0.05) increased tomato growth and yield compared to control (no fertilizer application). Also obtained results proved that tested treatments could be arranged in decreasing order as follows: municipal waste compost > poultry manure> cow manure> sheep manure > no fertilizer. Compost and poultry manure had a synergistic effect on both fresh and dry weights of tomato shoots and roots and compared to other treatments. As a general result using of organic fertilizers especially in composted form had positive effect on soil health and fertility, which consequents increase yield in long term can be expected.

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