Soil samplers for monitoring soil conditions

A soil sampler attachable to a vehicle for monitoring soil conditions in real time as the vehicle advances across a field, the soil sampler comprising:

• a collector configured to collect a soil sample from the field as the vehicle advances across the field;
• a preprocessor connected to the collector and configured to receive the soil sample from the collector and dilute the soil sample as the vehicle advances across the field;
• a sensor connected to the preprocessor and configured to determine a concentration of at least one analyte in the diluted soil sample as the vehicle advances across the field;
• and
• a disposer connected to the sensor and configured to dispose the diluted soil sample;
• and
• one or more processors programmed to:
• dilute the soil sample via the preprocessor as the vehicle advances across the field,
• via the sensor, determine the concentration of the at least one analyte in the diluted soil sample as the vehicle advances across the field, and
• cause the disposer to dispose the diluted soil sample as the vehicle advances across the field based on the determined concentration of the at least one analyte in the soil sample.