干旱区生态环境知识资源中心(Arid): Soil N2O emission from organic and conventional cotton farming in Northern Tanzania

Arid

DOI	10.1016/j.scitotenv.2021.147301
	Soil N2O emission from organic and conventional cotton farming in Northern Tanzania
	Bwana, Thomas N.; Amuri, Nyambilila A.; Semu, Ernest; Elsgaard, Lars; Butterbach-Bahl, Klaus; Pelster, David E.; Olesen, Jorgen Eivind
通讯作者	Amuri, NA (corresponding author), Sokoine Univ Agr, Dept Soil & Geol Sci, POB 3008, Morogoro, Tanzania.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	785
英文摘要	The effort to increase the sustainable supply of food and fibre is challenged by the potential for increased greenhouse gas (GHG) emissions from farming systems with intensified production systems. This study aimed at quantifying soil N2O emissions from smallholder organic and conventional cotton production practices in a semi-arid area, Meatu, Northern Tanzania. Field experimentswere conducted to quantify N2O emissions under (i) current practices with organic (3Mg ha-1 farmyard manure (FYM)) and conventional (30 kg mineral N ha-1) cultivation; (ii) a high input practice with organic (5 Mg ha-1 FYM) and conventional (60 kg mineral N ha-1) cultivation; and (iii) an integrated practice with organic (3Mg FYM+ legume intercropping) and conventional (30 kg N+ 3 Mg ha-1 FYM) cultivation. In both organic and conventional farming, control treatments with no fertilizer application were included. The studywas performed over two growing seasons, where season 1was rather wet and season 2was rather dry. Static chambers were used for in-situ measurement of N2O emission from soil. The current organic and conventional cotton farming practices did not differ (P > 0.05) in cumulative area-scaled and yield-scaled N2O emissions. High input conventional cotton showed higher area scaledN2Oemissions than organic cotton during the wetter season, but not during the drier season. The inorganic fertilizer+ FYMcombination did not differ (P> 0.05) inarea- and yield-scaled N2O emissions from conventional practice. Intercropping cotton and legumes did not affect (P > 0.05) N2O emission compared to 3 Mg FYM ha-1. The emission factors for both conventional and organic systems were generally above 1% in the dry season 2, but below1% in thewetter season 1. The use of organic and inorganic fertilizers at rates up to 60 kg N ha-1, FYM-inorganic fertilizer combination, and cotton-legume intercropping increased yields, while N2O emissions stayed low, in particular with use of mineral fertilizers. (c) 2021 Elsevier B.V. All rights reserved.
英文关键词	Greenhouse gas Nitrous oxide Cotton Fertilizer Manure Intercropping
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000659457100005
WOS关键词	NITROUS-OXIDE EMISSIONS ; GREENHOUSE-GAS EMISSIONS ; AGRICULTURAL SOILS ; INORGANIC FERTILIZER ; CROP ROTATIONS ; FLUXES ; NO ; MANURE ; DENITRIFICATION ; MANAGEMENT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351679
作者单位	[Bwana, Thomas N.; Amuri, Nyambilila A.; Semu, Ernest] Sokoine Univ Agr SUA, Dept Soil & Geol Sci, POB 3008, Morogoro, Tanzania; [Elsgaard, Lars; Olesen, Jorgen Eivind] Aarhus Univ, Dept Agroecol, Blichers Alle 20, DK-8830 Tjele, Denmark; [Butterbach-Bahl, Klaus] Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Atmospher Environm Res IMK IFU, Kreuzeckbahnstr 19, D-82467 Garmisch Partenkirchen, Germany; [Butterbach-Bahl, Klaus] Int Livestock Res Inst ILRI, Mazingira Ctr, POB 30709, Nairobi 00100, Kenya; [Pelster, David E.] Agr & Agri Food Canada, 2560 Hochetaga Blvd, Quebec City, PQ G1V 2J, Canada; [Bwana, Thomas N.] Vice Presidents Off, Dept Environm, Dodoma, Tanzania
推荐引用方式 GB/T 7714	Bwana, Thomas N.,Amuri, Nyambilila A.,Semu, Ernest,et al. Soil N2O emission from organic and conventional cotton farming in Northern Tanzania[J],2021,785.
APA	Bwana, Thomas N..,Amuri, Nyambilila A..,Semu, Ernest.,Elsgaard, Lars.,Butterbach-Bahl, Klaus.,...&Olesen, Jorgen Eivind.(2021).Soil N2O emission from organic and conventional cotton farming in Northern Tanzania.SCIENCE OF THE TOTAL ENVIRONMENT,785.
MLA	Bwana, Thomas N.,et al."Soil N2O emission from organic and conventional cotton farming in Northern Tanzania".SCIENCE OF THE TOTAL ENVIRONMENT 785(2021).