To evaluate the effect of chicken compost and compost tea on vegetative growth, yield components and chemical composition of potato crop (Solanum tuberosum L.) cultivar Spunta grown on a clayey soil and then study the effect of aforementioned factors on soil quality during the successive season of 2004/2005 winter a field experiment was performed out in Monshat El-Badawi Village, Talkha District, Dakahlia Governorate (North Nile delta region). Five treatments were arranged in a complete randomize block with three replicates, Four application methods (ore compost, sediment, sediment and extract combination and compost tea). Compost tea, foliar significantly increased dry shoot yield and fresh tuber yield. Also, application of compost tea increased dry matter (as %), crud protein (as %) and specific gravity of tubers in both seasons. As so, sediment and extract combination addition increased dry matter (as %) in tubers, and crud protein (as %) significantly. The addition of chicken manure into the soil increased both of total and available nitrogen, phosphorus and potassium in the soil. In spite of the highest values for all studied parameters under investigation were realized due to the compost tea treatment.