Regional Centre for Training in Aerospace Surveys (RECTAS) Off Road 1, Obafemi Awolowo University Campus, P.M.B. 5545, Ile-Ife, Nigeria Global Spatial Data Infrastructure (GSDI) Training WorkshopTheme: “Spatial Data Infrastructure Capacity Building for West-African Professionals” (Date: 22nd – 28th May, 2011) Practical Demonstration on GIS in Land Suitability Mapping for Precision Farming by Enaruvbe, G.O.
Goals of GIS in Precision Farming• Improve soil management techniques• Improve yield per hectare of farmland• Improve profit per farm input• Decision support for efficient management of farming input
Goals of GIS in Precision Farming• GIS can also be applied in other aspects of farming – Precision fertilizer application – Productivity estimation – Monitoring crop diseases – Among many other areas
Goals of GIS in Precision Farming• The goal of this presentation is to demonstrate the use of ArcGIS in soil suitability evaluation.• Available dataset include geo-referenced soil data• This is saved in a folder “soil25052011”on the desktop of your computer.
Expected Result of this Exercise• At the end of this exercise, we should be able to identify areas that are suitable, moderately suitable and highly suitable for the production of crop ‘X` based on soil characteristics only
Reclass• Repeat steps in slides 32-38 to reclass all the criteria required
Overlay Operation Raster Math | double click Plus
Overlay OperationSelect reclassified criteria e.g. pH reclass and P reclass as two criteria for overlay
• Repeat steps in slide 40 & 41, but always take the result of the last overlay operation as input 1 and any other criteria as input two.• Do this till you satisfy all criteria of interest e.g overlay of N, P, K and Yield• This means you keep increasing the criteria and you classes are likely to keep changing as you do that.•
Label the ClassesRight click the reclass theme | open attribute table| Options | Add Events