DETERMINATION OF SOME MICROBIAL ACTIVITY IN SOIL MANAGED WITH STUBBLE BURNED-UNBURNED, TRADITIONAL AND NO-TILLAGE SYSTEMS

Published in Scientific Papers. Series A. Agronomy, Vol. LX
Written by Aynur CAN, Kemal DOĞAN

Most of farmers in Turkey have been burning wheat stubble every June or July to prepare their field for second crops. It is believed that as a result of stubble burning, soil is becoming more productive and healthy. Stubble burning may be caused some yield benefits for short-term but in long-term it is caused degradation on soil quality. The purpose of this research was to determine the effects of stubble burning on microbial activity of soil under traditional tillage and notillage system. In accordance with this purpose, some microbial analyses have been followed in soils. Soil respiration rate (CO2 formation), dehidrogenase enzyme activity (DHA) and microbial biomass carbon content (MBC) were analysed according to Isermayer (1952), Thalman (1967) and Ohlinger (1993), respectively. Results revealed that soil microbial activity was lower in the stubble burned and conventional tillage (SBCT) applied plots. In this plot, as a mean values CO2 formation, DHA and MBC determined as 14.6 mg C 100 g-1 24h-1, 193 ug TPF 10 g-1 24h-1 and 25.6 mg C 100 g-1, respectively. These values were 16.9, 309.3 and 19.5 in conventional tillage (SCT) plots whereas 15.4, 620.6 and 11.0 in no tillage (NT) plots. In general, DHA was the most influenced factor among the other biologic activity indicators determined.

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CAN A., DOĞAN K. 2017, DETERMINATION OF SOME MICROBIAL ACTIVITY IN SOIL MANAGED WITH STUBBLE BURNED-UNBURNED, TRADITIONAL AND NO-TILLAGE SYSTEMS . Scientific Papers. Series A. Agronomy, Vol. LX, ISSN 2285-5785, 29-35.


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