precision agriculture and decision support systems in ...natres.psu.ac.th/nhc15/doc/precision...
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Precision Agriculture and Decision Support Systems in Horticultural
Crops
Wolfram Spreer
Chiang Mai University
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Precision farming operations
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Precision irrigation
10/11/16Precision Agriculture and Decision Support
Systems in Horticultural Crops3
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Sample collection and geo-referencing
Drying of samples
Soil analyses
Leon Mostacero, 2012
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Descriptive statistics
interpolation
Soil variability maps
Leon Mostacero, 2012
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Solenoid valves
Reference map
Positioning system
Leon Mostacero, 2012
Control system
monitoring
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Actual application
Water use of the machine
Application map
Leon Mostacero, 2012
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Lámina Aplicada Lámina colectada
Leon Mostacero, 2012
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Control and operation
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Control and operation
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• Remote access to data
• Online control and operation
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Automated irrigation
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Automated irrigation
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Greenhouse irrigation
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Automation in greenhouse
Decentrale relais
interface
Remote control via- Internet of things- peer to peer network
Control PC
Analogous input
Temeprature and humidity sensor
Radiation sum
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Greenhouse
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Take me Home TomatoPong Yaeng, Chiang Mai
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Fertigation
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Sensors for precision irrigation
• Climate data for climatic water balance (T, RH, u, Rad)
• Radiation sum
• Plant based sensors• Leaf temperature (CWSI)
• Sap flow
• Gas exchange
• Chlorophyll fluorescence
• Soil based sensors
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Thermal imaging
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Wiriya-Alongkornunpublished
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Drought stress monitoring by root respiration
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Experimental set up
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Moisture regime
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Volumetric substrate (sand) water content (SWC) of ten split-root potted longan trees.
Wiriya-Alongkorn et al., 2016
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Rootzone CO2 concentration
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Increase in CO2 concentration as indicator for CO2 production by roots and substrate water
content (SWC) on the left side (A) and on the right side (B) of split-root potted longan trees.
Wiriya-Alongkorn et al., 2016
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Influence of temperature
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Average daily ambient temperature and CO2 concentration as indicator for CO2
efflux from the rootzone in the control during the time of experiment.
Wiriya-Alongkorn et al., 2016
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Continuous Monitoring of CO2
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Spohrer et al., 2016
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Need for drainage
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GPS basics
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dGPS
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Water logging management
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Water logging management
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Visualization of flow
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Precise field levelling
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Combined application
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Direct injection
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Precision
Weed-control
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Wegener et al., 2016
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Orchard sprayers
• Gap detection
• Recovery
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Pesticide application by UAV
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Pesticide application by UAV
• Promising technology
• Unsuitable to replace field sprayers
• Potential for SE Asia
• Need for dGPS control
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