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Soil Nitrate System for Precision Management of Nitrogen Fertilizer Applications
Category(s):
For Information, Contact:
Jay Bjerke
Commercialization Manager, Engineering
515-294-4740
licensing@iastate.edu
Web Published:
11/3/2015
ISURF #
4383
Development Stage:

Description:
The soil nitrate sensing system allows nitrate to be analyzed rapidly in-real-time in the field. By measuring nitrate at multiple locations along with GPS coordinates for each location, the system can be used to rapidly generate a map of soil nitrate concentrations, which can be used as the basis for precision nitrogen fertilizer applications. Alternatively the sensor can be attached to (integrated with) a fertilizer applicator, allowing real time modulation of nitrogen fertilizer application rates based on measured soil nitrate levels. The soil nitrate sensing technology will make the Late Spring Nitrate Test (LSNT) practical and cost effective for precision nitrogen fertilizer applications.

Advantage:
• Real-time, on-the-go soil nitrate concentration sensing technology that can be attached to farm implements
• Measures soil nitrate concentrations in the parts per million range within ~1 second, so GPS registered data stream can be acquired
• Depth averaging (0 to 12 inches) to meet LSNT protocol
• System can rapidly generate a map of soil nitrate concentrations
• Makes precision sidedress nitrogen fertilizer applications possible – improving nitrogen use efficiency in crop production, saving farmers money, and reducing impact on the environment

Application:
Precision agriculture
Patent Information:
*To see the full version of the patent(s), follow the link below, then click on "Images" button.

Patents:
Patent(s) Applied For

Direct Link: