Nitrapyrin Mitigates Nitrous Oxide Emissions, and Improves Maize Yield and Nitrogen Efficiency under Waterlogged Field
Year: 2022
Type: article
Abstract: Aims In order to explore the effects of nitrapyrin (N-Serve) application on greenhouse gas emission, and nitrogen leaching of waterlogged maize (Zea mays L.) field, we investigated the effects of applying nitrapyrin on soil ammonium (NH4+-N) and nitrate nitrogen (NO3--N) content, nitrous oxide (N2O) fluxes and warming potential (GWPN2O) in a waterlogged maize field. Methods The design included three treatments: waterlogging treatment with only urea application (V-3WL), waterlogging treatment with urea and nitrapyrin application (V-3WL+N), no waterlogging treatment applied only urea (CK). Results Our results revealed that waterlogging lead to the increase of nitrogen leaching, resulting in the decrease of nitrogen use efficiency. The accumulated N2O emissions increased significantly in waterlogged plots compared to control plots, and maximum N2O emission fluxes occurred during the process of soil drying after waterlogging, resulting in the increase of GWPN2O and N2O greenhouse gas intensity (GHGIN2O) by 299% and 504%, respectively, compared to those of CK. However, nitrapyrin application was able to reduce N2O emissions. Nitrapyrin application was also good for decreasing GWPN2O and GHGIN2O by 34% and 50%, respectively, compared to V-3WL. In addition, nitrapyrin application was conducive to reduce N leaching and improve N use efficiency, resulting in a yield increase by 34%, compared to that of V-3WL.Conclusions The application of nitrapyrin helped to mitigate agriculture-source greenhouse effects and N leaching induced by waterlogging, and was an eco-friendly, high N-efficient fertilizer method for waterlogged field.
Source: Plants
Language: English
Subfield: Soil Science
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $2,303
Awards: G1708155164, G4269032585, G6806557257
OpenAlex ID: W4289204694