Document Type : Research Paper
Abstract
This experimental study was conducted to compare the effect of temperature on the effectiveness of Lactobacillus bacteria in decomposing organic waste and its potential use as a useful fertilizer for soil. Lactobacillus bacteria were isolated from the mouth of a donor and identified. Then, a number of organic wastes (cucumber peels and banana peels) were collected after washing, cleaning, drying and cutting. Lactobacillus bacteria were placed in a normal saline solution with a concentration of 0.90 ml and 15 ml of it was taken with a concentration of 5 McF and placed on organic waste weighing 100 grams and placed in containers, then covered and left. This waste was divided into two parts and prepared at a temperature of 37°C and another part at a temperature of 20°C to prove the effect of temperature differences on the effectiveness of Lactobacillus in decomposing waste. After the decomposition that lasted (1-1.5) months, this waste was taken, dried, ground, then mixed with soil and radish seeds were planted in the soil. After five days, the soil containing decomposed banana peels at 37°C showed the beginning of growth. On the seventh day, the normal soil showed growth. No growth was shown in the fields containing decomposed cucumber peels at 37-20°C and decomposed banana peels at 20°C during the first week. The plants withered without fertilizer after nine days of growth, while the plants in the fields containing decomposed banana peels at 37°C remained upright and healthy, highlighting their potential as a useful fertilizer.
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