Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/19838
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dc.contributor.authorMontgomery, Stephen
dc.contributor.authorGuppy, Christopheren
dc.contributor.authorMartin, Roberten
dc.contributor.authorWright, Graemeen
dc.contributor.authorFlavel, Richarden
dc.contributor.authorPhan, Sophanaraen
dc.contributor.authorIm, Sophoeunen
dc.contributor.authorTighe, Matthewen
dc.date.accessioned2017-01-17T10:13:00Z-
dc.date.issued2017-
dc.identifier.citationField Crops Research, v.203, p. 150-162en
dc.identifier.issn1872-6852en
dc.identifier.issn0378-4290en
dc.identifier.urihttps://hdl.handle.net/1959.11/19838-
dc.description.abstractThe upland cropping region of Northwest Cambodia exhibits limited crop diversity, with maize and cassava dominating rain-fed production systems. Farmers in the Districts of Sala Krau in Pailin Province, and Samlout in Battambang Province, report soil fertility decline in upland cropping systems with associated reduced yields and profitability compared with five years ago. Research was conducted at one site in each of these Districts over a two year period. The purpose of the study was to investigate crop rotations in this system with a focus on better use of soil water throughout the year to increase crop yields and profitability. This included an experiment to investigate increasing cropping intensity from the usual two crops per year to three and evaluate which crop sequences would be feasible. Out of a total 15 crop sequences evaluated, only four were successful in producing viable grain yields. These were the same sequences at both sites and included maize-maize-fallow, maize-maize-sunflower, maize-soybean-fallow and maizesoybean-sunflower. At Pailin, the sequence with the highest overall mean yield (4.3 t/ha) and profit was maize-maize-sunflower which returned a gross margin of $USD3700/ha over two years. The sequences with a fallow instead of a third crop produced the lowest financial returns at Pailin. However, in Samlout the maize-fallow was the most profitable sequence with an overall mean yield of 3.0 t/ha, returning $1680/ha over two years. The least profitable sequences at Samlout were the two soybean sequences. This study was successful in growing five crops in two years at Pailin, but could not reach the goal of six due to cultivar maturity length. At Samloutfour crops over two years were produced, as the pre-monsoon crop was not planted in either year due to lack of sowing rainfall. Seasonal climatic factors had the greatest effect at both field sites on gross margins, which emphasized the importance of matching sowing date to rainfall to make better use of stored soil moisture to optimise yield and profitability. At Pailin, mean seasonal surface soil moisture, hundred seed weight and harvest index also impacted gross margin returns. This research validated the stability of maize in the farming system while sunflower should be further investigated in cropping sequences.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofField Crops Researchen
dc.titleProductivity and profitability of upland crop rotations in Northwest Cambodiaen
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.fcr.2016.12.010en
dc.subject.keywordsLand Capability and Soil Degradationen
dc.subject.keywordsSoil Chemistry (excl. Carbon Sequestration Science)en
dc.subject.keywordsAgronomyen
local.contributor.firstnameStephen
local.contributor.firstnameChristopheren
local.contributor.firstnameRoberten
local.contributor.firstnameGraemeen
local.contributor.firstnameRicharden
local.contributor.firstnameSophanaraen
local.contributor.firstnameSophoeunen
local.contributor.firstnameMatthewen
local.subject.for2008070302 Agronomyen
local.subject.for2008050304 Soil Chemistry (excl. Carbon Sequestration Science)en
local.subject.for2008050302 Land Capability and Soil Degradationen
local.subject.seo2008961402 Farmland, Arable Cropland and Permanent Cropland Soilsen
local.subject.seo2008960904 Farmland, Arable Cropland and Permanent Cropland Land Managementen
local.subject.seo2008960905 Farmland, Arable Cropland and Permanent Cropland Water Managementen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailsmontgom@myune.edu.auen
local.profile.emailcguppy@une.edu.auen
local.profile.emailrmarti27@une.edu.auen
local.profile.emailgwright@pca.com.auen
local.profile.emailrflavel3@une.edu.auen
local.profile.emailmtighe2@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20170116-144430en
local.publisher.placeNetherlandsen
local.format.startpage150en
local.format.endpage162en
local.identifier.scopusid85008613526en
local.peerreviewedYesen
local.identifier.volume203en
local.contributor.lastnameMontgomeryen
local.contributor.lastnameGuppyen
local.contributor.lastnameMartinen
local.contributor.lastnameWrighten
local.contributor.lastnameFlavelen
local.contributor.lastnamePhanen
local.contributor.lastnameImen
local.contributor.lastnameTigheen
dc.identifier.staffune-id:smontgomen
dc.identifier.staffune-id:cguppyen
dc.identifier.staffune-id:rmarti27en
dc.identifier.staffune-id:rflavel3en
dc.identifier.staffune-id:mtighe2en
local.profile.orcid0000-0001-7274-607Xen
local.profile.orcid0000-0001-7867-2104en
local.profile.orcid0000-0003-1027-0082en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:20030en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleProductivity and profitability of upland crop rotations in Northwest Cambodiaen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorMontgomery, Stephen
local.search.authorGuppy, Christopheren
local.search.authorMartin, Roberten
local.search.authorWright, Graemeen
local.search.authorFlavel, Richarden
local.search.authorPhan, Sophanaraen
local.search.authorIm, Sophoeunen
local.search.authorTighe, Matthewen
local.uneassociationUnknownen
local.identifier.wosid000393723700016en
local.year.published2017en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/99b2bda9-3f17-4610-b276-7568ef994766en
local.subject.for2020300403 Agronomyen
local.subject.for2020410604 Soil chemistry and soil carbon sequestration (excl. carbon sequestration science)en
local.subject.for2020410601 Land capability and soil productivityen
local.subject.seo2020180605 Soilsen
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