Greenhouse Gas Emissions from Intermittently Flooded (Dambo) Rice under Different Tillage Practices in Chiota Smallholder Farming Area of Zimbabwe

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cg.contributor.crpClimate Change, Agriculture and Food Security
cg.coverage.countryZimbabwe
cg.coverage.iso3166-alpha2ZW
cg.coverage.regionAfrica
cg.coverage.regionSouthern Africa
cg.coverage.regionEastern Africa
cg.creator.identifierNgonidzashe Chirinda: 0000-0002-4213-6294
cg.identifier.doihttps://doi.org/10.4236/acs.2013.34a003en
cg.issn2160-0422en
cg.issue04en
cg.journalAtmospheric and Climate Sciencesen
cg.subject.ccafsLOW EMISSIONS DEVELOPMENTen
cg.volume03en
dc.contributor.authorNyamadzawo, Georgeen
dc.contributor.authorMenas Wen
dc.contributor.authorChirinda, Ngonidzasheen
dc.contributor.authorMujuru, Lizzieen
dc.contributor.authorSmith, J.L.en
dc.date.accessioned2014-12-16T06:37:34Zen
dc.date.available2014-12-16T06:37:34Zen
dc.identifier.urihttps://hdl.handle.net/10568/52119
dc.titleGreenhouse Gas Emissions from Intermittently Flooded (Dambo) Rice under Different Tillage Practices in Chiota Smallholder Farming Area of Zimbabween
dcterms.abstractAgriculture is one of the biggest sources of greenhouse gases. Rice production has been identified as one of the major sources of greenhouse gases, especially methane. However, data on the contributions of rice towards greenhouse gas emissions in tropical Africa are limited. In Zimbabwe, as in most of Sub-Saharan Africa, there are very few studies that have explored greenhouse gas emissions from agricultural lands. This study reports the first dataset on greenhouse gas emissions from intermittently flooded rice paddies in Zimbabwe. The objective of this study was to quantify greenhouse gas emissions from dambo rice under different tillage treatments, which were conventional tillage, no tillage, tied ridges, tied fallows, and mulching. Average soil nitrous oxide emissions were 5.9, 0.2, 5.4, 5.2 and 7.8 μg•m-2•hr-1 for tied fallows, conventional tillage, tied ridges, mulching and no tillage respectively. Average methane emission was 0.35 mg•m-2•hr-1 and maximum as 1.62 mg•m-2•hr-1. Average methane emissions for the different tillage systems were 0.20, 0.18, 0.45, 0.52 and 0.38 mg•m-2•hr-1 for tied fallows, conventional tillage, tied ridges, mulching and no tillage respectively. Carbon dioxide emissions were 98.1, 56.0, 69.9, 94.8 and 95.5 mg•m-2•hr-1 for tied fallows, conventional tillage, tied ridges, mulching and no tillage respectively. The estimated emissions per 150 day cropping season were 1.4, 3.6 and 0.6 kg•ha-1 for methane, carbon dioxide and nitrous oxide respectively. We concluded that intermittently saturated dambo rice Paddys are a potential source of greenhouse gases which is important to global greenhouse gas budgets, thus, they deserve more careful study.en
dcterms.accessRightsOpen Access
dcterms.bibliographicCitationNyamadzawo G, Menas W, Chirinda N, Mujuru L, Smith JL. 2013. Greenhouse Gas Emissions from Intermittently Flooded (Dambo) Rice under Different Tillage Practices in Chiota Smallholder Farming Area of Zimbabwe. Atmospheric and Climate Sciences 3(4A):13-20.en
dcterms.extentp. 13-20en
dcterms.issued2013
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherScientific Research Publishing, Inc.en
dcterms.subjectclimateen
dcterms.subjectagricultureen
dcterms.subjectgreenhouse gasesen
dcterms.subjectriceen
dcterms.subjecttillageen
dcterms.subjectwetland riceen
dcterms.typeJournal Article

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