Google Maps

centre pivot irrigation

Center-pivot irrigation (sometimes called central pivot irrigation), also called circle irrigation, is a method of crop irrigation in which equipment rotates around a pivot. A circular area centered on the pivot is irrigated, often creating a circular pattern in crops when viewed from above.

annotating google maps

• http://www.engadget.com/2005/03/08/how-to-make-your-own-annotated-multimedia-google-map/
• http://code.google.com/apis/maps/documentation/overlays.html
• http://esa.ilmari.googlepages.com/mymapsmarker.htm

• http://code.google.com/apis/maps/documentation/flash/tutorial-flex.html#DeclaringMaps

http://www.opengreenmap.org/en/greenmap