Attenuation of N2O emission rates from agricultural soil at different dicyandiamide concentrations |
| |
Authors: | Amitosh Verma Larisha Tyagi S. N. Singh |
| |
Affiliation: | (1) Environmental Science Division, National Botanical Research Institute, Lucknow, 226 001, India |
| |
Abstract: | An experiment was conducted to assess the role of different concentrations of dicyandiamide (DCD), a potent nitrification inhibitor, on temporal changes in nitrous oxide emission from sandy loam agricultural soil. It was found that with increasing concentration of DCD i.e. from 6 to 12% of nitrogen applied in the form of urea, there was a decrease in the both average and peak N2O emissions. However, from 14% DCD treated soil, there was a non-significant alteration in the N2O emission. Maximum average N2O efflux of 217.55 μg m−2 h−1 was noted from control plots. As compared to control, there was an attenuation of 50, 58, 65, and 91% average N2O efflux from 6, 8, 10 and 12% DCD applied pots, respectively, whereas, there was a negative average of N2O efflux from the soil with 14% DCD treatment. The soil N content also showed a significant correlation with N2O emission. Therefore, 12% DCD treatment has been found to be the best with regard to attenuation of nitrous oxide from sandy loam agricultural soils. |
| |
Keywords: | Nitrous oxide Urea Sandy loam soil Attenuation DCD concentrations |
本文献已被 PubMed SpringerLink 等数据库收录! |
|