Measuring Variability Techniques Manual During Field Operations Remote Sensing Variability of … Soils (type, fertility, …) Trees (size, vigor, yield, quality, …) Pests (weeds, insects, disease, …)
Strategic Responses to Variability Grove and Block Boundaries Landforming and Layout Irrigation Layout Rootstock and Scion Resetting and Abandonment Permanent, One-Time Costs Often Lower Technology
Tactical Responses to Variability Variable-Rate Fertilizer and Pesticides Spatially-Variable Irrigation Spatial Harvest and Marketing Good Technology and Management Needed
Line of sight radio-modem
The sensor network allows creating surface graphs showing the spatial and temporal variation in soil water matric potential (soil moisture). Differences of water mobility in soil can be observed and can help on better adjusting the site-specific irrigation control.
Lessons Learned in Agronomic Uniform Production is NOT the Goal –Often Cut Fertilizer Where Poor Yields Water is Most Important Technology Must Fit Operations Economic Potential Must Be Present
Lessons Learned in Agronomic Uniform Production is NOT the Goal –Often Cut Fertilizer Where Poor Yields Water is Most Important Technology Must Fit Operations Economic Potential Must Be Present –Risk Reduction –Environmental Demands
What is Precision Agriculture? Philosophy of Handling Spatial Variability Tradition Technologies –Variability Mapping –Variable Inputs Related Technologies –Labor Management –Remote Sensing –Robotics –Traceability