<i>GreenSeeker RT200</i> (Variable Rate Application and Mapping System) of the USA-based manufacturer NTech Industries; <a href="//commons.wikimedia.org/wiki/Category:DLG-Feldtage_2010" title="Category:DLG-Feldtage 2010">DLG field days 2010</a>, Gut Bockerode, Springe-Mittelrode, Lower Saxony, Germany. – GreenSeeker is a flexible tool that works together with GPS receivers and sprayer/spreader controllers. It measures (independent of daylight) crop condition (plant health/biomass/vigor), maps the results if needed and provides the ability to variably (specific to small subareas of a field) apply pesticides/fertilizers in real time. The GreenSeeker system consists of some metal frame structures (here: built for mounted use), an Interface Module (visible in front of the A-frame here), several (here: four) optical sensors, and a User Interface equipped unit with special software (usually inside the vehicle, not visible here).
<a href="//commons.wikimedia.org/wiki/User:Bdk" title="User:Bdk">bdk</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>