Nitrogen fertilization but not soil tillage affects nitrous oxide emissions from a clay loam soil under a maize–soybean rotation

TR Number

Date

2011

Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier

Abstract

Denitrification of nitrate fertilizer has been shown to contribute to agricultural nitrous oxide (N2O) emissions. Previous studies have revealed that no-till practices have insignificant or negative impact on nitrogen volatilization of nitrate fertilizers. This study examined the difference in N2O emissions according to tillage practice (mouldboard plough and no-tillage) and mineral nitrogen application rates (0, 80, 160 kg nitrogen per hectare) in a maize-soybean rotation from 2004-2005 in a well-drained humic gleysol. Results indicated that tillage had no effect on nitrogen volatilization rates and denitrification increased linearly with application rate. These results support prior studies’ findings that no-till practices do not impact N2O emissions related to agriculture.

Description

Metadata only record

Keywords

Climate control, Conservation tillage, N2o flux, No-till, Maize, Soybeans, Nitrogen rate, Yield-based n2o emissions, Greenhouse gases, Field Scale

Citation

Soil and Tillage Research 115: 16–26