ANALYSIS OF PHOSPHOLIPID FATTY ACIDS (PLFA) AS A SOIL BIOINDICATOR IN KARKAMIS/GAZIANTEP PISTACHIO ORCHARDS

摘要

Microbial dynamics of soils are important indicators of soil health. There is a strong relationship between microbial diversity, soil and plant quality and sustainability. Studies in this area help farmers to take practical measures to increase soil quality. This study aimed to determine PLFA (phospholipid fatty acids) in Karkamis / Gaziantep Pistacia Vera L. agricultural areas. In addition to PLFA, which enables identification of community structure in regional soils, the study evaluated organic matter content, texture properties, salt ratio, calcium ratio, lime ratio and pH contents in terms of microorganism diversity. In addition to PLPA properties, some physicochemi-cal properties of soils were analyzed. The findings revealed 16 different fatty acids, which are 14:0, 15:0, 16:0, 17:0, 18:0, a15:0, i15:0, i16:0, i17:0, cy17:0, cy19:0, 16:1ω7t, 18:1ω9c, 18:1ω9t, 18:2ω6, 20:0. Based on these results, it was found that bacteria PLFA bioindicator ratio was higher than PLFA bioindicator ratio of fungus. Furthermore, 1-2 % protozoa PLFA bioindicator was identified. No actinomyces bioindicator PLFA was identified. It was found that the soils had a high clay ratio, showed alkali character and that the organic matter amount was very low. This study is of great importance in terms of contributing to more sustainable agricultural practices. Appropriate measures for this region should be taken to increase biodiversity. Periodic repetition of these types of studies can be considered as an indicator in terms of the follow-up of the health of terrestrial ecosystem.