NDLI: Tillage and Nitrogen Application Effects on Nitrous and Nitric Oxide Emissions from Irrigated Corn Fields

Content Provider	Springer Nature Link
Author	Liu, X. J. Mosier, A. R. Halvorson, A. D. Zhang, F. S.
Copyright Year	2005
Abstract	A 2-year study was conducted to investigate the potential of no-till cropping systems to reduce N$_{2}$O and NO emissions under different N application rates in an irrigated corn field in northeastern Colorado. Flux measurements were begun in the spring of 2003, using vented (N$_{2}$O) and dynamic (NO) chambers, one to three times per week, year round, within plots that were cropped continuously to corn (Zea mays L.) under conventional-till (CT) and no-till (NT). Plots were fertilized at planting in late April with rates of 0, 134 and 224 kg N ha$^{−1}$ and corn was harvested in late October or early November each year. N$_{2}$O and NO fluxes increased linearly with N application rate in both years. Compared with CT, NT did not significantly affect the emission of N$_{2}$O but resulted in much lower emission of NO. In 2003 and 2004 corn growing seasons, the increase in N$_{2}$O-N emitted per kg ha$^{−1}$ of fertilizer N added was 14.5 and 4.1 g ha$^{−1}$ for CT, and 11.2 and 5.5 g ha$^{−1}$ for NT, respectively. However, the increase in NO-N emitted per kg ha$^{−1}$ of fertilizer N added was only 3.6 and 7.4 g ha$^{−1}$ for CT and 1.6 and 2.0 g ha$^{−1 }$for NT in 2003 and 2004, respectively. In the fallow season (November 2003 to April 2004), much greater N$_{2}$O (2.0–3.1 times) and NO (13.1–16.8 times) were emitted from CT than from NT although previous N application did not show obvious carry-over effect on both gas emissions. Results from this study reveal that NT has potential to reduce NO emission without an obvious change in N$_{2}$O emission under continuous irrigated corn cropping compared to CT.
Starting Page	235
Ending Page	249
Page Count	15
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	276
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	continuous corn cropping conventional-till N$_{2}$O NO N fertilizer no-till Plant Sciences Ecology Plant Physiology Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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