Ammonia and nitrous oxide losses following applications of ammonium sulfate to flooded rice

1981 ◽  
Vol 32 (1) ◽  
pp. 37 ◽  
Author(s):  
JR Freney ◽  
OT Denmead ◽  
I Watanabe ◽  
ET Craswell
Keyword(s):  
Nitrous Oxide ◽  
Ammonium Sulfate ◽  
Ammonia Volatilization ◽  
The Philippines ◽  
Diurnal Variations ◽  
Flooded Soil ◽  
Chamber System ◽  
Wet Season ◽  
Flooded Rice ◽  
Initiation Stage

Ammonia volatilization from applications of ammonium sulfate to a wet season crop of flooded rice in the Philippines was measured directly by a micrometeorological technique. Prior to transplanting the rice, ammonium sulfate (80 kg nitrogen ha-1) was broadcast over the flooded soil and incorporated by harrowing. A further 40 kg nitrogen ha-1 was broadcast at the panicle initiation stage. The soil pH was 6.7, while the pH of the floodwater varied from 7 . 5 to 9.5 during the course of the experiment. Loss of ammonia was detected immediately after application of ammonium sulfate and continued for approximately 7 days. Ammonia volatilization rates were highest in the middle of the day and declined each evening following the diurnal variations in water temperature and wind speed. More ammonia was lost from the fertilizer applied at the panicle initiation stage (10.6%) than from the pre-planting application (5.1 %). The overall measured loss of ammonia was small and amounted to approximately 7 % of the total nitrogen applied to the crop. Nitrous oxide losses, measured with a chamber system, amounted to only 0.1 % of the nitrogen applied as ammonium sulfate.

The interdependence of ammonia volatilization and denitrification as nitrogen loss processes in flooded rice fields in the Philippines

1990 ◽  
Vol 9 (1) ◽  
pp. 31-36 ◽  
Author(s):  
J. R. Freney ◽  
A. C. F. Trevitt ◽  
S. K. De Datta ◽  
W. N. Obcemea ◽  
J. G. Real
Keyword(s):  
Ammonia Volatilization ◽  
Nitrogen Loss ◽  
The Philippines ◽  
Rice Fields ◽  
Flooded Rice

scholarly journals Nitrous Oxide Emissions in Pineapple Cultivation on a Tropical Peat Soil

2021 ◽  
Vol 13 (9) ◽  
pp. 4928
Author(s):  
Alicia Vanessa Jeffary ◽  
Osumanu Haruna Ahmed ◽  
Roland Kueh Jui Heng ◽  
Liza Nuriati Lim Kim Choo ◽  
Latifah Omar ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Soil Temperature ◽  
Peat Soil ◽  
Farming Systems ◽  
N2o Emission ◽  
Nitrous Oxide Emissions ◽  
Natural State ◽  
N2o Emissions ◽  
Wet Season ◽  
Peat Soils

Farming systems on peat soils are novel, considering the complexities of these organic soil. Since peat soils effectively capture greenhouse gases in their natural state, cultivating peat soils with annual or perennial crops such as pineapples necessitates the monitoring of nitrous oxide (N2O) emissions, especially from cultivated peat lands, due to a lack of data on N2O emissions. An on-farm experiment was carried out to determine the movement of N2O in pineapple production on peat soil. Additionally, the experiment was carried out to determine if the peat soil temperature and the N2O emissions were related. The chamber method was used to capture the N2O fluxes daily (for dry and wet seasons) after which gas chromatography was used to determine N2O followed by expressing the emission of this gas in t ha−1 yr−1. The movement of N2O horizontally (832 t N2O ha−1 yr−1) during the dry period was higher than in the wet period (599 t N2O ha−1 yr−1) because of C and N substrate in the peat soil, in addition to the fertilizer used in fertilizing the pineapple plants. The vertical movement of N2O (44 t N2O ha−1 yr−1) was higher in the dry season relative to N2O emission (38 t N2O ha−1 yr−1) during the wet season because of nitrification and denitrification of N fertilizer. The peat soil temperature did not affect the direction (horizontal and vertical) of the N2O emission, suggesting that these factors are not related. Therefore, it can be concluded that N2O movement in peat soils under pineapple cultivation on peat lands occurs horizontally and vertically, regardless of season, and there is a need to ensure minimum tilling of the cultivated peat soils to prevent them from being an N2O source instead of an N2O sink.

Effect of biofertilizer and wheat straw biochar application on nitrous oxide emission and ammonia volatilization from paddy soil

2021 ◽  
Vol 275 ◽  
pp. 116640
Author(s):  
Haijun Sun ◽  
Yu Zhang ◽  
Yiting Yang ◽  
Yudong Chen ◽  
Paramsothy Jeyakumar ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Wheat Straw ◽  
Paddy Soil ◽  
Ammonia Volatilization ◽  
Nitrous Oxide Emission

Injection of Dicyandiamide-Treated Pig Slurry Reduced Ammonia Volatilization without Enhancing Soil Nitrous Oxide Emissions from No-Till Corn in Southern Brazil

2014 ◽  
Vol 43 (3) ◽  
pp. 789-800 ◽  
Author(s):  
Celso Aita ◽  
Rogério Gonzatto ◽  
Ezequiel C. C. Miola ◽  
Daniela B. dos Santos ◽  
Philippe Rochette ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Ammonia Volatilization ◽  
Nitrous Oxide Emissions ◽  
Pig Slurry ◽  
Southern Brazil ◽  
No Till

Ammonia volatilization from flooded rice soil using CAS and OSC methods

2021 ◽  
Vol 20 (2) ◽  
pp. 202-207
Author(s):  
S. Vanitha ◽  
V. Ravikumar ◽  
T. Sherene Jenita Rajammal
Keyword(s):  
Ammonia Volatilization ◽  
Rice Soil ◽  
Flooded Rice ◽  
Flooded Rice Soil

Methane and Nitrous Oxide Emissions from Flooded Rice Systems following the End-of-Season Drain

2015 ◽  
Vol 44 (4) ◽  
pp. 1071-1079 ◽  
Author(s):  
Maria Arlene Adviento-Borbe ◽  
Gay Necita Padilla ◽  
Cameron M. Pittelkow ◽  
Maegen Simmonds ◽  
Chris van Kessel ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emissions ◽  
Flooded Rice

Problems in the use of microplots for assessing the fate of urea applied to flooded rice

1988 ◽  
Vol 39 (3) ◽  
pp. 351 ◽  
Author(s):  
ACF Trevitt ◽  
JR Freney ◽  
JR Simpson ◽  
WA Muirhead
Keyword(s):  
Solar Radiation ◽  
Preliminary Analysis ◽  
Ammonia Volatilization ◽  
Urea Hydrolysis ◽  
Incident Solar Radiation ◽  
Size And Shape ◽  
Flooded Rice ◽  
Ph Values ◽  
Plot Size ◽  
Heat Penetration

The effects of differences in size of microplot and type of enclosure on the floodwater parameters determining ammonia volatilization were studied. The results show that the use of enclosures can retard urea hydrolysis, suppress the maximum daytime pH values (an effect which is cumulative over a number of days), and significantly reduce the potential for ammonia volatilization. These effects are the consequence of lowered light (and heat) penetration in the enclosed area due to shading of the floodwater by the enclosure walls. The magnitude of these effects varies with plot size and shape, and the material used for construction of the plot wall. A preliminary analysis suggests that, if errors due to shading are acceptable when 90% or more of the incident solar radiation always penetrates to the enclosed floodwater, then square plots with opaque walls must be at least 1.2 m along a side and cylindrical plots must be at least 1.2 m in diameter when wall height is 0.1 m above the floodwater.

Yield-scaled global warming potential of annual nitrous oxide and methane emissions from continuously flooded rice in response to nitrogen input

2013 ◽  
Vol 177 ◽  
pp. 10-20 ◽  
Author(s):  
Cameron M. Pittelkow ◽  
Maria A. Adviento-Borbe ◽  
James E. Hill ◽  
Johan Six ◽  
Chris van Kessel ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Global Warming ◽  
Global Warming Potential ◽  
Methane Emissions ◽  
Nitrogen Input ◽  
Flooded Rice
Sign in / Sign up

Export Citation Format

Share Document