Patogenic Contamination on Lettuce and Soil Irrigated by Treated Domestic Waste Water
2019
Tarı Akap, Perihan | Gunduz, Mehmet | Asik, Serafettin | Ozcelik, Sener
The Research was conducted at International Agricultural Research and Training Centre in Menemen, located western Turkey, in the late summer period in 2014. In this research, lettuce was irrigated by 3 different irrigation methods, drip irrigation, subsurface drip irrigation and furrow irrigation, with treated domestic waste water. Anion-cation, pollution analyses and fecal coliform tests were run. Also soil samples, from plots from the depth of 0-20 cm, were taken and analyzed in order to monitor the status of the pathogens in soil. Water’s pH values were 7.59-7.79, EC values were 2.7-3.9 dS m-1, fecal coliform values variety 1.456x103-2.568 x103 cfu 100 ml-1. According to the analyses of soil samples before irrigation by treated waste water salmonella was also uncounted beforehand. It is thought that, this case can be a result of the feces of winged living around the trial area. According to the pathogenic analyses run on harvested lettuce E. coli values were found respectively 2x101 cfu 100g-1 for sub-surface drip irrigation, 3 x101 cfu 100g-1 E. for drip irrigation and 4.4 x102 cfu 100g-1 for furrow irrigation. As a conclusion, it was found that pathogenic contamination in subsurface drip irrigation is less than the other methods.
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