Nitrogen Source Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems in Colorado

2011 ◽  
pp. 15-27 ◽  
Author(s):  
A. D. Halvorson ◽  
S. J. Del Grosso
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Source ◽  
Cropping Systems ◽  
Nitrous Oxide Emissions ◽  
Source Effects

Nitrogen Source Effects on Nitrous Oxide Emissions from Irrigated No-Till Corn

2010 ◽  
Vol 39 (5) ◽  
pp. 1554-1562 ◽  
Author(s):  
Ardell D. Halvorson ◽  
Stephen J. Del Grosso ◽  
Francesco Alluvione
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Source ◽  
Nitrous Oxide Emissions ◽  
Source Effects ◽  
No Till

Nitrogen Source Effects on Soil Nitrous Oxide Emissions from Strip-Till Corn

2011 ◽  
Vol 40 (6) ◽  
pp. 1775-1786 ◽  
Author(s):  
Ardell D. Halvorson ◽  
Stephen J. Del Grosso ◽  
Claudia Pozzi Jantalia
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Source ◽  
Nitrous Oxide Emissions ◽  
Source Effects

Soil nitrous oxide emissions as affected by long-term tillage, cropping systems and nitrogen fertilization in Southern Brazil

2015 ◽  
Vol 146 ◽  
pp. 213-222 ◽  
Author(s):  
Cimélio Bayer ◽  
Juliana Gomes ◽  
Josiléia Accordi Zanatta ◽  
Frederico Costa Beber Vieira ◽  
Marisa de Cássia Piccolo ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Fertilization ◽  
Cropping Systems ◽  
Nitrous Oxide Emissions ◽  
Southern Brazil

scholarly journals Opportunities for mitigating nitrous oxide emissions in subtropical cereal and fiber cropping systems: A simulation study

2016 ◽  
Vol 218 ◽  
pp. 11-27 ◽  
Author(s):  
Henrike Mielenz ◽  
Peter J. Thorburn ◽  
Clemens Scheer ◽  
Massimiliano De Antoni Migliorati ◽  
Peter R. Grace ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Simulation Study ◽  
Cropping Systems ◽  
Nitrous Oxide Emissions

Nitrous oxide emissions from contrasting organic cropping systems

2009 ◽  
Vol 6 (24) ◽  
pp. 242012
Author(s):  
Ngonidzashe Chirinda ◽  
J E Olesen ◽  
S O Petersen ◽  
J R Porter
Keyword(s):  
Nitrous Oxide ◽  
Cropping Systems ◽  
Nitrous Oxide Emissions

Nitrogen, Tillage, and Crop Rotation Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems

2008 ◽  
Vol 37 (4) ◽  
pp. 1337-1344 ◽  
Author(s):  
Ardell D. Halvorson ◽  
Stephen J. Del Grosso ◽  
Curtis A. Reule
Keyword(s):  
Nitrous Oxide ◽  
Crop Rotation ◽  
Cropping Systems ◽  
Nitrous Oxide Emissions

Quantifying nitrous oxide emissions from the foliage of cotton, maize and soybean crops

2015 ◽  
Vol 66 (7) ◽  
pp. 689 ◽  
Author(s):  
I. Rochester ◽  
C. Wood ◽  
B. Macdonald
Keyword(s):  
Nitrous Oxide ◽  
Zea Mays L ◽  
Cropping Systems ◽  
Time Of Day ◽  
Nitrous Oxide Emissions ◽  
N2o Emissions ◽  
N2o Flux ◽  
Gossypium Hirsutum L ◽  
Cotton Plants ◽  
Glycine Max L

Nitrous oxide (N2O) is a potent greenhouse gas, contributing to global warming. Most of the N2O emitted from cropping systems is derived from the soil and is closely related to the use of nitrogen (N) fertiliser. However, several reports have shown that small, yet significant, portions of the N2O flux from cropping systems are emitted from the crop foliage. This research aimed to quantify N2O emissions from the foliage of field-grown cotton (Gossypium hirsutum L.), and included maize (Zea mays L.) and soybean (Glycine max L.) for comparison. We also aimed to identify differences in the timing of N2O emissions from foliage during the day and over an irrigation cycle. Individual plants were isolated from the soil, and the atmosphere surrounding the encapsulated plants was sampled over a 30-min period. Subplots that were previously fertilised with urea at 0, 80, 160, 240 and 320 kg N ha–1 and then sown to cotton were used to measure N2O flux from plants on three occasions. N2O flux from cotton foliage was also measured on five occasions during an 11-day irrigation cycle and at five times throughout one day. N2O flux from foliage accounted for a small but significant portion (13–17%) of the soil–crop N2O flux. N2O flux from foliage varied with plant species, and the time of day the flux was measured. N2O flux from cotton plants was closely related to soil water content. Importantly, the application of N fertiliser was not related to the N2O flux from cotton plants. The most plausible explanation of our results is that a proportion of the N2O that was evolved in the soil was transported through the plant via evapotranspiration, rather than being evolved within the plant. Studies that exclude N2O emissions from crop foliage will significantly underestimate the N2O flux from the system.

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