Impact of different chloride salts and their concentrations on nitrification and trace gas emissions from a sandy soil under a controlled environment

Potassium chloride (KCl) and magnesium (MgCl2) can be used to reduce carbon dioxide (CO2) nitrous oxide (N2O) emissions, but their efficacy strongly affected by Cl− concentration. This study aimed compare the behaviour of different salts concentrations with that a typical commercial nitrification inhibitor (3, 4-dimethylpyrazole phosphate, PIADIN). KCl, MgCl2 PIADIN were investigated under laboratory incubation experiment for two months. KCl applied at 0.5 1.0 g kg−1, while was 25 mg kg−1 soil. CO2 N2O analysed during period. The NH 4 + NO 3 - dynamics in soil also measured. results showed decreased CO2-C emissions 43%–46% increased N2O-N 15%–48%, whereas 72% 19%. retarded decrease -N concentration increase reduced 113% 97% maintained high low addition an effective treatment as Mg both fertilized inhibited emissions. Moreover, could retard nitrification, While had no fertilizing value, it more than salts.