Using Satellite Imagery for Variable Rate Maps

Using Satellite Imagery for
Variable Rate Maps
Curtis Dick
What Satellite Imagery is useful for
Designating Management Zones
Building Variable Rate Maps
Helping Identify Problems in Growing fields
Help identifying where to soil sample
Measuring Biomass
Satellite Imagery Technology
• Agri-ImiGIS
▫ Started in 1994 in North Dakota by providing satellite
images for a variety of farming applications
▫ Currently provide 2 types of images (both have NDVI
▫ Main use is for building management zones
▫ Also provide products that allows producers to have
access to the system via an app
▫ The products allow for soil sampling and other
practices to be tied into the imagery into a browser
Landsat vs. Rapid Eye
Rapid Eye
Major Uses in Oklahoma
• A very successful use in
Oklahoma has been with
variable rate Growth Regulator
in Cotton Production
• The Images allow a producer
or consultant to see the
differences in a growing field
• Landsat is updated every 16
days no matter if there is cloud
cover or not
• Rapid Eye takes 4-5 pictures
during a growing season and
will stay in an area until it gets
a clear picture
Hard to tell in a growing field the
amount of an input certain plants need
• Around 140 different type of drones available for
• Prices range from $100,000 to $12,800
• As of right now primary purpose is for
• Switzerland based company
that produces two types of
▫ Swinglet CAM
▫ eBee
Are Drones Useful?
• Are very easy to operate
• Do not fly well in winds over
25 mph
• Does not matter if it is cloudy
• Are somewhat costly
• Can have an image of a field in
1 day
• If drones are being used
commercially they can not be
flown over 400 ft elevation in
Using Drones for Mapping NDVI Vs Green Seeker
• Swinglet Cam
• Green Seeker
• Best use of satellite imagery seems to be to
measure biomass
• Satellite imagery is a useful tool in developing
management zones, but should probably not be
the only information the zones are based off of.
• Drones for commercial purposes must be flown
below 400ft.

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