SoilOptix

According to the manufacturer's description: SoilOptix produces high-definition soil mapping sensors that can accurately map over 25 different layers including macro and micro nutrients, pH, organic matter, texture, and plant available water. My review: SoilOptix produces the most detailed high-definition soil mapping sensors I have ever used. I was able to get help and use it over 3 smaller fields of mine the past 9 months and it has been a success. I have been cautioning not to use it over a larger field as it may not be that profitable but so far it's working good. On another note - it weighs on the cheaper side so that's a great start.