ĞůŐŝĂŶǁŽƌŬƐŚŽƉ͚^ƉĂĐĞϰ&ŽŽĚ͛ :ƵŶĞϭϭ͕ϮϬϭϱͲ DŝůĂŶ
JoostWELLENS&WaterͲEnvironmentͲDevelopmentunit
Regional crop & irrigation monitoring:
some examples of(new)opportunities
…
Monitoring‘space4food’
Ͳ applicationsatтlevelsͲ
170km 10km 5km National/regional: ͲMODIS(NDVI,GAI,…); Ͳtemporalprofiles; Ͳhistoricdata. љ StatisticalapproachField/Regional/National:
ͲSPOTͲ5Take5; Ͳtimeseries. Ͳfieldobservations. љ Assimilation Regional: ͲERSͲ2; Ͳirrigationmanagement database. љ Signalanalysis
1.i
Regional
(
coarse
)
cropmonitoring
Ͳ GlobalMonitoringforFoodSecurityͲ
climatedata:
rainfall temperature ET0AgroMetShell
agroͲmeteorologicaldata:
planting cropcycle cropcoefficients soiltype&
regressionmultiplebestvariables
cottoninBurkina:
initialwatercontent NDVImax ETRdevelopmentphase R2=0,75 error=73kg/ha (5,9%of1.120kg/hayield) ͲMODIS; ͲNDVItemporalprofiles.1.ii
Regional
(
coarse
)
cropmonitoring
Ͳ ‘curvefitting’Ͳ
ͲMODIS; ͲGAItemporalprofiles. (greenareaindex) Shapeofdecreasingcurves ofgreenareaindex ~ Regionalwheatyield2
Irrigationmonitoring
Ͳ usingSARdataͲ
ͲirrigatedperimeterofTadla (center ofMorocco); Ͳ100,000haofwheat; Ͳfloodirrigation,2to5times; Ͳirrigationwaterinvoicesdatabase. ͲERSͲ2; ͲCͲband; Ͳdualpolarizations(VV); Ͳ25m.backscatter
~
soilwatercontent
~
irrigation
31/03/2011 03/04/2011 06/04/2011 12/04/2011+
atmospheric
conditions;
+
cost;
+
commercial
potential.
3.i
Regional
(
detailed
)
cropmonitoring
Ͳ workͲflowͲ
Parcel cropyield Soilmap Weather gridcell Crop database Cropyieldper simulationunit assimilation HR satellitedata (adaptedfromDelécolle ĞƚĂů.,1992)B=WPͼɇTr
orBiomass=WaterproductivityͼSumoftranspiration
Y=HIͼB
orYield=HarvestindexͼBiomass
simple & solid3.ii
AquaCrop(FAO)
Ͳ howdoesitwork?Ͳ
08% 44% 85% ༃ Overhead pictures ༄ Canopycover (eCognition) ༅ Graph:Ͳcropcharacteristics; Ͳcanopygrowth&decline; Ͳphenologicalstages. 88%3.iii
Cropinput
Ͳ canopycoverͲ
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«
«
༃ Soilmoisture: Ͳsoiltype; Ͳirrigations; Ͳ… ༄ Canopycover: Ͳgrowth&declinecoef.; Ͳplantdensities; Ͳ… ༅ Yield: Ͳwaterproductivity; Ͳharvestindex. Observedvs.simulated soilmoisture: Observedvs.simulated canopygrowthcover: Observedvs.simulated yield:3.iv
Results
Ͳ soilmoisture,canopygrowth,yield:e.g.cabbageͲ
…
Agriculturaladvice
Ͳ ‘modellingforthemasses’Ͳ
Basedonthepriorly presentedknowledge&expertise:
Mobilephone:
Ͳ
GPScoordinates;
Ͳ
cropdata(type,sowing,…);
Ͳ
etc.
Mobilephone:
Ͳ
Weeklyupdated
irrigationguidelines;
Ͳ
Yieldestimates.
Ser
ver
with
we
b
Ͳapplic
at
ion
SendͲindata;
Nationalsoilmaps;
MeteoͲbroadcasts.
Yieldforecasts;
irrigationcalendars.
Prof.B.Tychon& M.Barke,T.Benabdelouahab, M.Bouezmarni,V.Debbaut,A.Denis, A.Diouf,O.Durgun,M.ElJarroudi, I.Garba,I.Jacquemin,M.Lang,J.Minet, P.Ozer,H.Sallah,C.Simonis,K.Sossey, J.Wellens. www.eed.ulg.ac.be