The effect of different biochars on the concentration of organic carbon, nitrogen, phosphorus and enzyme activity of a sandy loam soil

Document Type : Research Paper

Authors

1 Department of Soil Science, Faculty of Agriculture, Malayer University, Malayer. Iran

2 Department of Soil Science, Faculty of Agriculture, Malayer University, Malayer. Iran:

Abstract

To investigate the effect of biochars on the concentration of organic carbon, nitrogen, phosphorus and enzyme activity, an experiment was conducted. Biochars were used at 10%. The experimental treatments CS, PMB, GSB and NSB. The samples were incubated for two months and sampling was done on days of 5, 10, 30 and 60 .The results showed that the application of PMB and GSB caused a significant increase in organic carbon, available phosphorus and ammonium in the soil compared to CS. The highest nitrate was observed in GSB. The concentration of available phosphorus and nitrate increased with increasing incubation time, and organic carbon and ammonium decreased with increasing incubation time. The results showed that the use of PMB and GSB caused a significant increase in organic carbon, available phosphorus and ammonium in the biochar-amended soils. The highest nitrate concentration was observed in GSB. Available phosphorus and nitrate increased with increasing incubation time, and organic carbon and ammonium decreased with increasing incubation time. The concentration of invertase in PMB and GSB was significantly different from CS. The peak of invertase activity was observed in PMB at 5 days of incubation. Adding GSB to the soil increased the activity of urease by 1.7 times compared to CS. GMEa and TEI were higher in GSB compared to other treatments. Rch was as follows: GSB > PMB > NSB. In cluster analysis, GSB and PMB were placed in one cluster. The results showed that GSB and PMB had the greatest effect on the measured factors.

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Iranian Journal of Soil and Water Research

Articles in Press, Accepted Manuscript
Available Online from 07 February 2024

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