The effect on soil carbon mineralization of different doses of epoxiconazole and carbendazim suspension used in wheat cultivation

Inthisstudy, theeffects on soil carbon mineralization of different doses [recommended dose (RD), ×2 RD and ×4 RD] of epoxiconazole + carbendazim fungicide suspension used for destroying the powdery mildew and yellow rust diseases in the cultivati on of wheat being a common agriculture product in Osmaniye were determined in soils before and after wheat spraying and the campus soil of Osmaniye Korkut Ata University. Carbon mineralization of three different soils moistened at 80 % of the field capacity were observed under controlled conditions (28 °C and 45 days) and CO2 respiration method. At theend of the 45 days incubation period, the highest and statistically significant value of cumulant carbon mineralization was observed in applied wheat soil (AWS ×2 RD). This value (7,756 mg C (CO2) / 100 g) was significantly different in both a group and among the other groups (P <0,001). This result shows that epoxiconazole + carbendazim fungicide suspension added at 2 times level of the recommended dose was only used as a carbon source for microorganisms in the research soils. In the light of this finding, it might be said that the amount of carbon added to the soil with other doses of the chemical was not enough to increase microorganism activity.