title: Methane and nitrous oxide emission from bovine manure management practices in India.
abstract: We report seasonal variation in CH(4) and N(2)O emission rate from solid storage of bovine manure in Delhi as well as emission factors and emission inventory from manure management systems in India. Emission flux observed in the year 2002-2003 was 4.29+/-1, 4.84+/-2.44 and 12.92+/-4.25 mg CH(4)kg(-1)dung day(-1), as well as 31.29+/-4.93, 72.11+/-16.22 and 6.39+/-1.76 microgN(2)O kg(-1)dung day(-1) in winter, summer and rainy seasons, respectively. CH(4) emission factors varied from 0.8 to 3.3 kg hd(-1)year(-1) for bovines and were lower than IPCC-1996 default values. N(2)O emission factors varied from 3 to 11.7 mg hd(-1)year(-1) from solid storage of manure. Inventory estimates were found to about 698+/-27 Gg CH(4) from all manure management systems and 2.3+/-0.46 tons of N(2)O from solid storage of manure for the year 2000.
authors.affiliation: Analytical Chemistry Section, National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India. prabhat@mail.nplindia.ernet.in <prabhat@mail.nplindia.ernet.in>
authors.forename: Prabhat K
authors.initials: PK
authors.lastname: Gupta
authors.forename: Arvind K
authors.initials: AK
authors.lastname: Jha
authors.forename: S
authors.initials: S
authors.lastname: Koul
authors.forename: P
authors.initials: P
authors.lastname: Sharma
authors.forename: V
authors.initials: V
authors.lastname: Pradhan
authors.forename: Vandana
authors.initials: V
authors.lastname: Gupta
authors.forename: C
authors.initials: C
authors.lastname: Sharma
authors.forename: Nahar
authors.initials: N
authors.lastname: Singh
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000822:Animal Husbandry; D000818:Animals; D002417:Cattle; D004784:Environmental Monitoring / Q000379:methods*; D005285:Fermentation; D017752:Greenhouse Effect; D007194:India; D008372:Manure; D008697:Methane / Q000032:analysis*; D009609:Nitrous Oxide / Q000032:analysis*; D011891:Rain; D012621:Seasons; D018505:Waste Management / Q000379:methods*
chemical_list: D000393:Air Pollutants; D008372:Manure; D009609:Nitrous Oxide; D008697:Methane