292-39 Effect of Nitrogen Fertilization, Harvesting and Residue Management Practices on Greenhouse Gas, Ammonia and Particulate Matter Emissions in Sugarcane Production.



Tuesday, October 18, 2011
Henry Gonzalez Convention Center, Hall C, Street Level

Syam Dodla1, Jim Wang2, Changyoon Jeong3, Sanku Dattamudi2, Ronald DeLaune4, Sonny Viator5, April Hiscox1, Ronald Sheffield1 and Thomas Hymel5, (1)Louisiana State University, Baton Rouge, LA
(2)School of Plant, Environment & Soil Sciences, Louisiana State University, Baton Rouge, LA
(3)School of Plant, Environmental, and Soil Sciences, Louisiana State University, Baton Rouge, LA
(4)South Stadium Drive, Energy& Coast bldg, Louisiana State University, Baton Rouge, LA
(5)New Iberia Research Station, Louisiana State University, Jeanerette, LA
Agricultural production practices such as fertilization, cultivation and harvesting likely influence the intensity of emission of greenhouse gases, ammonia, and particulate matter. In this study, various experiments were carried to determine the effects of application of two different N fertilizers, urea and urea ammonium nitrate (UAN),  on greenhouse gas (CO2, CH4 and N2O) emissions, influence of UAN  application on  ammonia flux as well as  impacts of different harvesting and residue management practices on particulate matter emissions in sugarcane production.  The results showed that the application of UAN led to the increased emission of N2O and CH4 while the urea application increased CO2 emissions. Residue retain had slightly higher respiration than residue burn treatment. The combine harvesting sugarcane  and ground burn practice of sugarcane residue considerably increased the particulate emission especially particulates smaller than 2 µm. Combine harvest led to the release of particulates of 2 to 10 µm as much as 4 times more as compared to burning practice.  In addition, ground burn of harvested residue generated different smoke composition from that of standing burn of sugarcane before harvesting stalks.
See more from this Division: S11 Soils & Environmental Quality
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