This paper describes all tools and procedures used to structure and implement an
automatic data acquisition and control mobile laboratory network for crop production systems
data management and spatial variability studies in the Brazilian Center-West Region. It was set
up with base in remote sensing and microprocessor techniques, microelectronic devices,
sensors, controls, sampling systems, data loggers, portable microcomputers, automatic data
acquisition, RF communications link, and the global positioning system (GPS), allowing for the
acquisition of spatially related data during tilling, planting, and harvesting. Physical chemistries
and biological characteristics of the continuous soil-water-plant-atmosphere were monitored
along of the crop growth period, at field conditions, seeking the rationalization of the agricultural
inputs use and the performance improvement of agricultural systems. Some results are
presented.