khmer rumduol meas · crawford fund training activity bill rathmell, clive murray, dao xuan cuong,...

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1 ច"កភពែខ(រ រំដួល.ស Khmer Rumduol Meas No. 1, March 2017 Newsletter for the ACIAR Project CSE/2015/044: Sustainable intensification and diversification in the lowland rice system in Northwest Cambodia Contents Contents ..................................................... 1 The meaning of “Khmer Rumduol Meas” . 1 Introduction to the project........................ 1 Crawford Fund training activity ................. 2 Foresight workshop ................................... 2 Stakeholder engagement workshop ......... 5 Inception workshop ................................... 5 Participatory Rural Appraisal (PRA) ........... 6 Diversification options ............................... 7 Survey of weed and weedy rice seed contamination in harvested paddy ........... 8 References ................................................. 9 Contacts ................................................... 10 The meaning of “Khmer Rumduol Meas” Rumduol flowers: http://angkor.co/photo/wp- content/uploads/2015/06/romduol-flower.jpg “Khmer” emphasizes the project’s focus on Cambodia and rumduol (Sphaerocoryne affinis) is Cambodia’s national flower. Rumduol is well known for its strong fragrance which is traditionally associated with femininity and hence our project’s recognition of the roles of women in agriculture. Meas means gold in Khmer and the project hopes to help Cambodian smallholder farmers prosper. Phka Rumduol, the pride of Cambodia, is a jasmine rice variety released by the Cambodian Agricultural Research and Development Institute (CARDI). Phka Rumduol was awarded “World’s Best Rice” in 2012 and 2013. However much remains to be done with production and value-chain development to ensure the benefits of plant breeding and agricultural research are delivered to Cambodia’s smallholder farmers. Introduction to the project Meeting with the Agricultural Cooperative for Chamroeun Phal (ACC) in Svay Cheat Village, Battambang province CSE/2015/044 commenced in November 2016 and runs for five years. It is focused on Banteay Meanchey, Battambang and Pursat provinces in northwestern Cambodia. In 2010,

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Page 1: Khmer Rumduol Meas · Crawford Fund training activity Bill Rathmell, Clive Murray, Dao Xuan Cuong, Rosanne Quinnell, Yorn Try The program included practical training on crop protection

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ច"កភពែខ(រ រំដួល.ស

KhmerRumduolMeasNo.1,March2017

NewsletterfortheACIARProjectCSE/2015/044:Sustainableintensificationanddiversificationinthe

lowlandricesysteminNorthwestCambodia

Contents

Contents.....................................................1

Themeaningof“KhmerRumduolMeas”.1

Introductiontotheproject........................1

CrawfordFundtrainingactivity.................2

Foresightworkshop...................................2

Stakeholderengagementworkshop.........5

Inceptionworkshop...................................5

ParticipatoryRuralAppraisal(PRA)...........6

Diversificationoptions...............................7

Surveyofweedandweedyriceseedcontaminationinharvestedpaddy...........8

References.................................................9

Contacts...................................................10

Themeaningof“KhmerRumduolMeas”

Rumduolflowers:http://angkor.co/photo/wp-content/uploads/2015/06/romduol-flower.jpg

“Khmer”emphasizestheproject’sfocusonCambodiaandrumduol(Sphaerocoryne

affinis)isCambodia’snationalflower.Rumduoliswellknownforitsstrongfragrancewhichistraditionallyassociatedwithfemininityandhenceourproject’srecognitionoftherolesofwomeninagriculture.MeasmeansgoldinKhmerandtheprojecthopestohelpCambodiansmallholderfarmersprosper.

PhkaRumduol,theprideofCambodia,isajasminericevarietyreleasedbytheCambodianAgriculturalResearchandDevelopmentInstitute(CARDI).PhkaRumduolwasawarded“World’sBestRice”in2012and2013.Howevermuchremainstobedonewithproductionandvalue-chaindevelopmenttoensurethebenefitsofplantbreedingandagriculturalresearcharedeliveredtoCambodia’ssmallholderfarmers.

Introductiontotheproject

MeetingwiththeAgriculturalCooperativeforChamroeunPhal(ACC)inSvayCheatVillage,Battambangprovince

CSE/2015/044commencedinNovember2016andrunsforfiveyears.ItisfocusedonBanteayMeanchey,BattambangandPursatprovincesinnorthwesternCambodia.In2010,

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BattambangandBanteayMeancheywereCambodia’slargestriceproducingprovincesandthethreeprovincesaccountfor27%ofCambodia’swetseasonriceproduction.

Theprojectaimstoworkwithlocalcommunitiestoenhancesustainableintensificationanddiversificationtoimproveproductivityandlivelihoodsecurityforfarmers.

Theprojectobjectivesareto:

• Identifythelocalsocio-economicandagronomictrends,constraintsandopportunitiesforsustainableintensificationanddiversification;

• Establishparticipatoryon-farmtrialstotestsustainableintensificationoptions;

• Comparativeevaluationofdifferentscalingmodelsforsustainableintensificationanddiversification;

• Buildthecapacityoflocalfarmingcommunitiesandtertiaryagriculturaleducationalinstitutions.

CrawfordFundtrainingactivity

BillRathmell,CliveMurray,DaoXuanCuong,RosanneQuinnell,YornTry

Theprogramincludedpracticaltrainingoncropprotectionproducts

ACrawfordFund(CF)trainingactivitywasheldinBanteayMeancheyandBattambangprovincesfrom16thOctoberto1stNovember2016.

ThetrainingcoursewassetupfollowingvisitstoCambodiain2015byseniorCrawfordFundadministrators;theysawworkthathadbeendoneinthecountrybyUniversityofSydney(USyd)andSyngentaFoundationforSustainableAgriculture(SFSA)withadditionalfunding(ABVandDFAT)fromAustralia.Itwas

designedasthemostcomprehensiveinasuccessfulcascadeof“train-the-trainer”coursesinpracticalsustainabletechnologyforsmallholderfarmersinCambodia’sprovinces.

ThepracticalteachingwasdoneatMeanCheyUniversity(MCU)/SFSAfielddemonstrationtrials,inMCUlaboratories/classroomsandatnearbyfarmsrunbylocalsandexpatriates.ThecoursewasdesignedbySFSA’sCliveMurray,workingcloselywithDrYornTry,MCU’sVice-Rector.

Demonstrationofthedrumseederforwetseedingrice

TrainerscamefromCambodianandVietnameseresearchandeducationinstitutions,CropLifeAsia(partofaglobalfederationofagribusinesses)aswellasUSydandSFSA.Thetraineesweremostlyyounggraduateemployeesofgovernmentresearchinstitutesandextensionservices,NGOsandprivate-sectorinputsuppliers;afewofthelatterattendedattheirownexpense.

SomeundergraduatesfromMCUattendedassupernumeraries.TrainingwasconductedinEnglishandKhmer,andcopiesofthepresentationsweredistributedonUSBdrives.Thefeedbackfromthetraineesaboutallthetrainerswasuniformlypositive;almostalltraineessaidthecoursewouldhelpthemintheirjoboftransferringtechnologytofarmersandthattheywouldattendagainifofferedthechance.Manywishedthecoursehadbeenlongerandmoredetailed;afewhadhadproblemsoflanguagecomprehension,includingthesoletraineefromLaos.

Foresightworkshop

DanielTan

Projectinceptionmeetingswereheldfrom6thto8thNovember,2016attheAsiaHotel,PhnomPenh.Therewerethreecomponents:

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(1)foresightworkshop;(2)stakeholderengagementworkshopand(3)inceptionworkshop.

DrJohnDixon,ACIARResearchProgramManager(CroppingSystemsandEconomics)openingtheprojectinceptionmeetings

Thepurposeoftheforesightworkshopwastouseforesightmethodologytodefineclearlythespecifictrendsandscenarioswhichwillinfluencetheachievementoftheagreedprojectoutputs.TheforesightstudyusedthemethodologyofVoros(2003):

VorosJ.(2003).Agenericforesightprocessframework.Foresight5,10-21.

H.E.DrImKoch,SecretaryofState,MoEYSaddressingtheForesightWorkshop

ThemeetingwasaddressedbyHisExcellencyDrImKoch,SecretaryofStatefortheMinistryofEducation,YouthandSport(MoEYS).DrImKochhighlightedtheneedtoachieveahighqualityeducationwithanemphasisonScience,Technology,EngineeringandMathematics(STEM)disciplines.HesaidthatthereisaneedtostrengthentheMoEYScurriculumtofosterstudentstothinkcriticallyandtosolveproblemsrelevanttoNationaldevelopment.OurprojectwillalignwithMoEYStoexplorecommunityengagementstrategiestoencourageinnovationuptake,problemsolvingandcommunicationskills.

Currentchallengesinthenorthwest(JohnDixon)

• Exodusofrurallabourforce;• Limitedentrepreneurshipamongfarmers

andsmallbusiness;• Lackofavibrant,dynamicrurallandscape;• Howcanwehelptodevelopmore

entrepreneurshipandinnovation?• Lackofengagementofproducersinthe

ricevaluechain;• Technicalandeconomicchallengeswithall

aspectsofricecropproduction;• Limitedaccesstoirrigationisaconstraint

tointensificationanddiversification.

Futurescenarios(JohnDixon)

A500hasingle-ownerricefarminBattambangprovince,possiblyaremnantoftheFrenchcolonialera

Futurescenariosareneededtohelpinprojectplanningasprojectresearchresultshavemaximumimpactafter10-15years.Hencethereisaneedtotargetandthinkahead.Defininglikelyscenarioshelpsfocusonthemosteffectiveresearch,policyandinfrastructure.Threecontrastinghypothetical

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futuredevelopmentscenarioswereproposedfor2030innorthwestCambodia:

1. Largescalefarmledscenario:Small-holderssellout-transformationtolarge-scalecommercialagriculture(500-1,000hafarms),fullymechanised,bulkhandlingforexportmarketswithlimitedruralpopulation;

2. Localbusinessledscenario:input,machineryandservicecontractingandalsoshare-farmingwithmixedfarmsizes(mixofsmalltomediumsizefamilyfarmswithafewlargefarms),goodconnectionstodomesticandinternationalmarkets;

3. Communityscalespecialisation/valueaddingledscenario:Individualsmallfamilyfarmsandfarmergroups/cooperativesproducingend-productsfordomesticandexportmarkets.Diversifiedcropping,horticultureandanimalproduction,specialisedbyvillages.Well-developedmarketandvaluechainlinkages.

KeyLearningsoftheforesightstudy

• Ricecrisis:largelyinnorthernCambodia,whilefarmersinsouthernCambodia(closetoVietnameseborder)cangetadvice,technologyandcopytechnologyacrosstheborder,combinedwithbetterwateravailabilityandmarketaccesshavelessenedtheimpactofthecrisisinsouthernCambodia;

• Therearestilltechnologiesthatneedtobetested.Forexample,couldtheimpactofwetseasondroughtbereducedbyusingdrillseeders?

TheprojecthasarrangedtoacquirethisThaiseeddrilltoenablefarmerstocomparedrillseedingwithbroadcastingon-farm

• Needforobjectivemanagementonfarmagronomicpractices.Institutional

constraintsserveasmajorbarrierstoadoption.Priceisanissue.Themarketisnotnecessarilydistortedforrice.However,thecurrentsituationwithnocompetitionfromThailandorVietnamhasseenthepremiumforfragrantricediminish.Toavoidthisissue,farmerswillneedtoretainownershipoftheirricefurtherupthevaluechain.

• Socialcapacitybuildingisnecessaryforfarmer/communityempowermenttoenablethemtotakechargeoftheirownproductionsystemsandgenerateinnovation.

• Needtorefineandfullydescribepathwaysforfuturebymappingoutimpactpathways.

• Agronomy:focusshouldbeon-farmandin-villageintegratedmanagementofexistingtechnologies.DevelopmentofGoodAgriculturalPractices(GAP)forcropproductionthatcanbethebasisforsecuringcontractsforpremiumproducts.Somelevelofagronomyonfarmsneedstobeintegratedwiththesupplychainsandfarmergroupsorhubs(“softer”side).

• Adaptivemanagementofon-farmagronomyanddatamanagement.

• Soilconstraints:pH,ploughpans;betterunderstandingofsub-soilconstraintsacrosssoilgroups.

SunnhempcangrowonresidualsoilmoistureattheendofthewetseasontofixatmosphericNandtorestoresoilorganicmatter

• Theproductionofcropsotherthanriceisconstrainedbypoorhydraulicconductivityonheavyclaysoils.Soilimprovementoptionsincluderaisedbeds,deepripping,cropresidueretentionandmulchcrops

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suchassunnhemp(Crotalariajuncea),sesbania(Sesbaniarostrata)andpearlmillet(Pennisetumglaucum).

• Therearemanypotentialdiversificationoptionsbutwhataretheagronomicandsoilconstraintissues?Whichdiversificationoptionshavethepotentialtoincreasehouseholdincome?Theprojectcanrunfarmingsystemssimulationsondiversificationoptions(APSIM)andusewhole-farmeconomicmodelstotestopportunitycostsofalternativeenterpriseoptions.Valuechaincasestudiesarerequiredtotesttheviabilityofdiversificationoptions.

• ImportanttolinkupwithotherrelevantDonorandNGOprojectsaswellasprivatepartners,inputsuppliers,contractorsandbuyers.

Stakeholderengagementworkshop

DanielTan

Thepurposeofthestakeholderengagementworkshop,heldon7thNovember2016,wastouseoutcomesfromtheforesightworkshopandinputpresentationsfromexternalparticipantstakeholdersandprojectstoexplorepotentialinteractionsbetweentheACIARprojectandongoingworkinCambodia.

RepresentativesandspeakersfromthepublicandprivatesectororganisationsactiveinnorthwestCambodiathatattendedincluded:

• CambodianAgriculturalValueChainProgram(CAVAC);

• IFADProjectforAgriculturalDevelopmentandEconomicEmpowerment(PADEE):http://padee.org/public/;

• AgricultureServicesProgrammeforInnovation,ResilienceandExtension(ASPIRE);

• GeneralDirectorateofAgriculture(GDA);• ProvincialDepartmentsofAgriculture,

ForestryandFisheries(PDAFFs)fromBattambangandPursat;

• VoluntaryServicesOverseas(VSO)Cambodia;

• SdocSdomAgriculturalCooperative;• InternationalRiceResearchInstitute(IRRI);• UniversityofBattambang(UBB);and

• SM-Waypoint:http://www.smwaypoint.com/.

Inceptionworkshop

DanielTan

Thepurposeoftheinceptionworkshop,heldon8thNovember2016,wasto(1)initiateandcommunicateworkplansforcommencementofworkinthefirsttwelvemonths,(2)establishsurveyscopeandsustainabilityindicatorsinthesurveysand(3)coordinatethetimingofapproachestolaterobjectivesandmilestones.Themeetingwasattendedbytheprojectteam.

CropdiversificationoptionsinNWCambodia

Theworkshoplinkedprojectoutcomestothethreescenariosdiscussedattheforesightworkshop(i.e.thelargescale,localbusiness-ledandcommunity-ledscenarios).Theneedfordiversificationwasemphasisedasthecurrentricescenarioisseenasapovertytrap.Thefollowingcropdiversificationoptionswerediscussedfortheagro-ecologicalareasofnorthwestCambodia:includingtheOldAlluvialTerraces(OAT)andActiveFloodplain(Whiteetal.1997).

Linkingobjectiveswithforesightstudyscenarios

AdiscussionwasheldregardinglinkingprojectobjectivestotheforesightstudyscenariosonDay1oftheworkshops.

1.Largescalefarmscenario

• Developmentofdrillseeders(Output2.4.2).Thisappliestoallthreescenariosasdrillseedersarelikelytobeadoptedbycontractors

• Mobileapps(Output4.2.3)• Cropprotection(Output2.7.1)

Crop diversification options

OAT + No Irrigation

Active Floodplain Rice Diversity

0

50

100

150

200

250

Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb

Rainfall(m

m)

Flood

OAT + WS Irrigation Rice Rice Diversity?

Photoperiod sensitive rice

OAT + DS Irrigation Rice Rice Diversity?Rice?

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2.Localbusinessledscenario

• Needtoengagewithexistingagribusinessesandlookfornewopportunities(Output3.3.1,3.3.2)

• Buildingpilotmodels(Output2.1.1)• Targetprovisionofscience-based

independentadvice(Output3.2.1)

3.Communityscalespecialisation/valueaddingscenario

• Economicassessmenttoidentifyagribusinessopportunities(Output3.2.1)

• Marketdemandandaccess(Output2.3.3)• Bestpracticeproduction(Output2.6.1)• Technology/agronomyneedstobe

integratedwithvaluechainandfarmergroups(Output2.6.1,2.6.2)

• Consumerneedsandmarketsystems(Output2.3.3)

• Linkwithwiderstakeholders–ASPIRE/CAVAC(Output3.1.2)

• Landusemapforcropsandnon-cropagriculturalproductivity(Output1.3.2)

• Studyresultsofpreviousprojects(Output1.2.3)

Projecttimeline

TheprojecttimelinewaspresentedbyDanielasfollows:

1. Year1–Baselinesurvey• Householdandfarmingsystem(Dr

CheaSareth,CARDI)• Adaptivecapacityoffarming

households(DrClemensGrunbuhel,AIT)

• Participatoryresearchondriversofchange(DrsPeterAmptandRebeccaCross,USyd)

• Analysisofprivatesectorrecordsofcropinputsandin-fieldmeasurementstodeterminefactorslimitingyields(BobMartin,USyd;VanTouch,USyd;BunnaSom,CARDI)

2. Years2–3Pilottestingatfield/farmscale• Testeffectivenessofleadingfarmers

versuscommunityhubs–whichisthebestmodel?Aneedsandriskanalysiswillbedonetoexplorelinkageswithexistingagribusinesshubsandfranchisesandpresentedtotheprojectteamforconsideration.

• Evaluatebestpracticechemicalandnon-chemicaloptionsforintegratedcropmanagement

• Precisionagriculture:useofreflectancetechnologyfornutrientmanagementandcropprotection;landlevelling;UnmannedAerialVehicle(UAV),EM38surveystodeterminesubsoilconstraints.

3. Years4-5–Scale-up• Workwithfarmergroupstoupscale

innovationstovillage/communitylevel–fromfourtoninevillages

• Concurrently,upscalingthroughengagementwithagronomistsinprivatesectorinputsuppliers–toworkwithPDAFFtoupskillinputsuppliersandcontractorsinyearlyrefreshereveryyear(e.g.productrecalls,issues).

ParticipatoryRuralAppraisal(PRA)

RebeccaCross,PeterAmpt,JinYu,AshleyRootsey,LouiseCapistrano,YehezkielHensonetal.

ThePRAteamfromMCU,UBBandUSYD

Overa13-dayperiodinNovember-December2016,staffandstudentsfromtheUniversityofSydney(USyd),MeancheyUniversity(MCU)andtheUniversityofBattambang(UBB)conducted144interviewsin8villages,4ineachofthetwoprovinces.Interviewswerefollowedupwithdailyworkshops,regionalworkshopstosumupeachprovinceandafinalworkshoptopullallinsightstogether.

ThemainfindingsofthePRAwereasfollows:

• Themajorityoffarmersinterviewedproducedricefordomesticconsumptionandforsale,aswellasagrowingarange

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ofothercropsandkeepingsmallnumbersoflivestock.

• Farmershadlittleornoinfluenceon,orpowerover,thecostofinputsorthepricestheyreceivedforrice.

• Therewaswidespreaduseofcredittopurchaseinputswhichwascausingincreasinglevelsofdebtandreducingopportunitiesforcapturingpost-harvestvalue.

• Increasingdebtmeantthatinmanyhouseholds,membersofworkingageleavetheirvillagestoworkelsewhere(usuallyinThailand)andsendremittancebacktotheirfamilies.

• Whendebtscouldnotbeserviced,familieswereleavingtheirlandandbecomingeconomicrefugees.Thiswashavingacompoundingeffectinfurtherreducingvillage-levelopportunities.

• Levelsofinputusewerehighlyvariable,withapparentunder-useandover-useoccurringfrequently.Thisindicatesthataccesstoreliableinformationandunderstandingofoptimuminputlevelsisinconsistent.Theneedtoavoidtherisksassociatedwithcreditandcropfailureatleastpartiallyexplainslowpurchasedinputstrategies.Thepervadingbeliefthatadoptionofhighyieldingricevarieties,fertilizersandpesticidesindicatesyouareasuccessfulmodernfarmerappearstodriveover-useofinputs.

• Controlofwaterinthewetseasonandaccesstowaterinthedryseasoniscriticalasdryseasonricecropsaremuchmoreprofitable,andwaterisneededformostsuccessfuldiversificationoptions.Wherefarmershadaccesstowaterinthedryseasonitwasrarelyreliableoradequateenoughforconsistentproductionandprofitability.

• Whenfarmersexplainedthecostsofproduction,itappearedthatprofitmarginsweregenerallyverylow,withmanyricecropsachievingnetlosses.

• Farmerswereacutelyawareoftheseissuesandexpressedeagernessfortrainingandwillingnesstoexploreoptionsforchangingpractices.

AstudentfromMCUdemonstratingtheproject’sWeedIDsmartphoneapptoafarmer

• Thereweresomeexistingexamplesofusefulstrategiesforsustainableintensificationofriceproductionthattheprojectcouldworktoenhance,andtheteamperceivedfurtheropportunitiesthatcouldbeexplored.

• Thereweremanyexamplesofsuccessfuldiversificationstrategiesthatappearedtobecommerciallyviable,withleadingfarmersprovidingstrongrolemodelsfromwhichotherscouldlearn.

ThenextstageoftheprojectistofollowtheleadsuncoveredbythePRAandtoquantifykeyfindingsusingabaselinesurveyinMay2017.FurtheranalysisofthetranscriptsfromthePRAwillbeundertakenin2017andfurtherreportingofthedetailswillbemadelaterin2017.

DiversificationoptionsnotedinthePRA

PRAteam

Oystermushroom(Pleurotusostreatus).DonorsandNGOshavelookedatawiderangeofdiversificationoptionsinCambodiabutvaluechainopportunitiesandthreatsarenotalwayscheckedout

ThePRAteamidentifiedarangeofpotentialenterprisediversificationoptions:

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• Livestock:cattle;chickens;ducks;fish;frogs;pigs.Forageproductionforcattlefeedingwasnotmentioned.Buffaloraisingwasnotmentioned.

• Fruit:banana;coconut;guava;jackfruit;lime;mango;orange;pineapple.Dragonfruit,durian;longan,mangosteen,pomeloandrambutanarealsogrownintheregionbutnotmentionedbyfarmersinthePRA.

• Vegetable:aubergine;bamboo(shoot?);cabbage;cauliflower;chili;climbinggourd;cucumber;lemongrass;longbean;lotus/waterlily;luffagourd;momeanh(Cleomegynandra);morningglory;mushroom(oyster,straw);pumpkin;sa-am(Acaciapennata);sweetcorn;watermelon;wingbean.

• Fieldcrops:cassava(notmentioned);cowpea;maize;mungbean;peanut;sesame;soybean;sugarcane;sunflower(notmentioned).

• Otherenterprises:bee-keeping;cricketfarming,silkworm/mulberry.

Importedvegetablesinclude:carrot;tomato;Chinesespinach;onion;potato;andredgarlic.Theeconomicfeasibilityofproducingtheselocallycouldbetested.

A/Prof.DanielTanandSamMalfroy,PlantHealthAustralia,checkingonhoneyproductionfromtheAsianhoneybee(Apiscerana)inasunflowerfieldinPailinprovince.MCU,withsupportfromAustralianAid,havedevelopedcapacityforbee-keeping.

Surveyofweedandweedyriceseedcontaminationinharvestedpaddy

BobMartin,YehezkielHenson,FlorisVanOgtrop,KeoukBroeum,RathaRien,PaoSreanandDanielTan

Paddysampleswerecollectedafterharvestandinspectedforweedyriceandweedseedcontamination

Cambodiaisexperiencingarapidshiftfromtransplantedtohand-broadcastseededricewithaconsequentincreaseinseedingratesfrom25-30kg/hato100-200kg/ha.Toreducecosts,farmerskeeptheirownseedforsowingwiththepotentialforweedseedcontamination.

Weedseedcontamination

AsurveyofweedseedcontaminationinharvestedricepaddywasconductedintwoprovincesofCambodia(BattambangandTakeo)attheendofthewetseasonin2016.Farmerswereinterviewedaboutriceseedingpracticesandatotalof114sampleswereinspectedforweedseedcontaminationfromthetwoprovinces.Inbothprovinces,themajorityoffarmerskepttheirownseedorboughtseedfromaneighbour.Farm-keptseedforsowinginBattambangaccountedfor88%andTakeo,89%ofsownseed.

Ischaemumrugosumwasthemostcommonweedseedcontaminant,apartfromweedyrice,inharvestedpaddy

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Seedsof42differentweedspeciesfrom13plantfamilieswerefoundinthepaddysamples.ThefivemostimportantspecieswereIschaemumrugosum(69%ofsamples),Melochiacorchorifolia(48%),Fimbristylismiliacea(32%)Ludwigiaoctovalvis(31%),andEchinochloacrusgalli(27%).

Despitetheshorterhistoryofdirect-seedinginTakeo,theweedspeciescompositioninricepaddywassimilartothatforBattambangwheredirect-seedinghasbeenpracticedforatleasttwodecades.However,weedseedburdenswerelessinTakeo.OptionsforimprovedweedmanagementinricesystemsarebeingdevelopedinCSE/2015/044.

Weedyricecontamination

AswithmanyAsiancountries,decliningavailabilityofrurallabourhascausedCambodianricefarmerstoshiftfromtransplantingtodirectseedingandthishasraisedconcernsabouttheincreasedincidenceofweedyrice.ToassesstheextentoftheweedyriceprobleminCambodia,asurveywasconductedtodeterminethelevelofweedyricecontaminationinharvestedpaddyaswellasincertifiedandgradedseedforsowing.

Farmerswereinterviewedabouttheirknowledge,attitudesandpracticesregardingthemanagementofweedyrice

Paddysamplesweretestedfrom64farmersinBattambangprovinceandfrom50farmersinTakeoprovinceand28samplesweretestedfromnineseedcompaniesand/orseedproducers.Eightyeight%offarmerssaidtheyhadweedyriceintheirfields,weregenerallyawareofmanagementoptionsbutrelied

predominantlyonincreasedseedingratestosuppressweedyrice.

TherearetwomaintypesofweedyriceinCambodia:awnlessnon-photoperiodsensitivetypesmaturingataround100daysaftersowing;andawnedphotoperiodsensitivetypesmaturinginNovember-December.

Ninetyfive%ofpaddysamplescollectedinBattambangcontainedweedyriceseedsand98%inTakeoprovince.Certified/gradedseedcontainedanaverageof29redseeds500g-1milledricewhichwasalmostsixtimesthelimitof5redseeds500g-1.ManagementoptionsforweedyriceinCambodia,includingtheintroductionofnon-transgenicimidazolinone-resistantricevarieties,arebeingconsidered.

MrRathaRein(UBB)millingpaddysamplesfordetectionofredseedsofweedyrice

Awnlessweedyrice(left),awnedweedyrice(centre)andSenKraOubvariety(right)

ThisworkwasfundedbyBASFSouthEastAsiaPte.Ltd.,Singapore.

Twoscientificpapershavebeenpreparedforpublicationonweedsandweedyrice.

References

VorosJ.(2003).Agenericforesightprocessframework.Foresight5,10-21.

WhitePF,OberthürT,SovuthyP,eds.1997.ThesoilsusedforriceproductioninCambodia.Amanualfortheiridentificationandmanagement.

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InternationalRiceResearchInstitute,P.O.Box933.Manila,Philippines.

Contacts

PleasebeactivecontributorsandsubmityourstoriestotheEditors:

BobMartin([email protected]);CliveMurray([email protected]);TryYorn([email protected]);SarethChea([email protected]);

VanTouch([email protected]).