Crop Monitoring System.

A prototype system was developed and constructed for automating measurement and recording of canopy, soil, air temperature, and soil moisture status in cropped fields. The system consists of a microcontroller-based circuit with solid- state components for handling clock/calendar, sensor power, and data storage and retrieval functions, sensors, including an analog soil moisture sensor, analog and digital temperature sensors, and digital infrared thermometer, are widely available and inexpensive. Sensors perform, calibrated and provide measurements according to manufacturerʹs specifications.