آزمون زيست سنجي سميت كمپوست زباله شهري بر سبز شدن و رشد گياهچه هاي گوجه فرنگي

Effect of garbage compost poison on germination and seedling of tomato

Application of urban refuse compost to agricultural soil could help to solve urban problems in large cities caused by increasing production of waste. Refuse compost has been identified as an alternative to fertilizer to increase soil fertility and crop production. In this research the capacity of compost made from urban refuse to enhance emergence seedling grown in potting soil was studied. Four treatments were established based on the addition of increasing quantities of composted urban refuse to soil (1:2.5, 1:5, 1:7.5, 1:10 v/v). Physical, physio-chemical and chemical analyses of different mixtures were made. Plant growth, biomass production and macronutrient, micronutrient and heavy metal contents of plant and soil were determined. The addition of compost increased pH, electrical conductivity (EC) of substrates, and macronutrients, micronutrients and heavy metal of plants and substrates. The highest germination, growth rate, shoots and roots dry weight was obtained with the medium prepared by mixing rate of 1:5 compost and soil. The mixture with the most compost (1:2.5) had the lowest germination and growth of tomato seedling.