Torben: Deanonymizing Tor Communication using Web Page Markers
Svend Christensen, Torben Heisel and Anne Mette Walter Danish Institute of Agricultural Sciences
description
Transcript of Svend Christensen, Torben Heisel and Anne Mette Walter Danish Institute of Agricultural Sciences
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Overview of developments in precision weed management, issues of interest and future directions being considered
in EuropeSvend Christensen, Torben Heisel and
Anne Mette WalterDanish Institute of Agricultural Sciences
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Input data Output data
Point or zone model
Competition model
PC-Plant Protection
Decision model
DAPS - Decision Algorithm for Patch Spraying
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Input dataField namePositionWeed speciesWeed density (leaf area and plant density)Sowing dateSeed rateRow distanceVarietyCrop leaf areaGrowth stageHistorical data (weed species and yield data)Soil typeExpected pricesWeedEye measurementsSampling
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Point or zone modelHerbicide choiceEconomic optimal treatmentCrop managementRelative weed leaf area
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Competition modelWeed speciesPlant densityWeed leaf areaSowing dateSeed rateRow distanceVarietyCrop leaf areaCompetition parametersEstimated yield loss
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PC-Plant ProtectionWeed speciesPlant densityGrowth stageHerbicide parametersFind useable herbicides
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Decision modelEstimated yield lossSowing dateSeed rateRow distanceVarietyPhysical weed control methodsHerbicide parametersCostPotential crop yieldEstimate yield gainEstimate efficacy
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Output dataTreatment maps (chemical or physical)Yield gain mapEfficacy mapOptimal row distance mapWeed map(s) before and after treatmentOptimal seed rate mapGeostatisticKrigingGIS
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MathCad dokument
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1/3 N 1/1 N1/10 N1.5 1 0.5 00
20
40
60
80
100
alpha=-2, beta=-4alpha=-1.5, beta=-4alpha=-1, beta=-4alpha=-0.5, beta=-4alpha=-2, beta=-1alpha=-1.5, beta=-1alpha=-1, beta=-1alpha=-0.5, beta=-1
Log 10 dose
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ass r
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1/10 N 1/3 N 1/1 N
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Grid weed mapping (A)
. . . .
. . . . . . . .
10.6
0.20.6
0.2
1
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Weed MapsWeed Maps
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11.906 11.910 11.91455.422
55.424
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11.906 11.910 11.91407142128354249566370
Plan
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spp.
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Tribenuron-methyl 500 g a.i./kg
Ioxynil + Bromoxynil 200 g a.i./l
Dose: 0.1 - 1.7 Tablet /haMean dose: 1.1 Tablet /ha
Dose: 0 - 1 l/haMean dose: 0.2 l/ha
Treatment maps for injection Treatment maps for injection sprayingspraying
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Hardi sprayer with a Raven injection system
Patch SprayingPatch Spraying