Idham ِIdham; A. A. Assaffii; Hassan B. Aswad; Noori H. Rzayej
Abstract
Amount of domestic solid organic waste were collected for the purpose of recycling it to produce organic fertilizers and estimate the product , organic waste mixture was prepared from ...
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Amount of domestic solid organic waste were collected for the purpose of recycling it to produce organic fertilizers and estimate the product , organic waste mixture was prepared from separated waste which collected , mixture prepared with C: N ratio 30:1 by enriching waste with urea fertilizer. Mixture will fermented by aerobic and anaerobic methods , after being vaccinated each of them by 5% of active soil vaccine taken from the surface and soil depth, a compact plastic bottles size 25 liters used for a period of 60 days , Then completed fermentation for further 30 days after the supplemented mixtures equipped with two levels of 0% and 20% of the raw rock phosphate (RP). The most important results: the low carbon quantity and increase the concentration of nitrogen in mixtures components after the end of the fermentation stage and the highest percentage reduction of C 40% with the treatment of aerobic fermentation and supplemented RP20% with a higher content of total microbial and fixation nitrogen, solvent compounds phosphate and the highest productive amount of IAA was: 8.86 , 5.65 , 5.87 log cfu g-1 and 8.36 mg kg -1. The highest total and mineral nitrogen ratio of 28.14 and 15.02 g kg -1 with treatment aerobic fermentation and supplemented 20%RP, which also marked the lowest ratio of C: N amounted to 13.6: 1, while the treatment of anaerobic fermentation registered and non- supplemented RP highest rate of organic nitrogen 17.98 g kg -1 , and the highest rate to be Fulvic , Humic acid and phenolic acids 11.81 and 23.40 g kg -1 and 60.23 mg kg -1, respectively. Treatment of anaerobic fermentation recorded the highest concentration of phosphorus available, iron, zinc and copper extracted in DTPA ,rate amounted to 13.67 g P kg -1 , 779.3 , 66.2 , 40.6 mg kg -1, respectively. And the presence of bacteria coliform and Salmonella from mixtures disappeared after fermentation. Aearobic fermentation and supplemented 20%RP equation was also marked by the highest percentage germination of the seeds of lettuce 96.1% and get a 9 day old seedlings, up 13.31 cm and 6.76 cm roots of lettuce at a rate of wet and dry weight was 16.4 and 1.45 g -1 seedlings.
