Nitrogen Use Efficiency, Nitrogen Fertilizers, NUE, Nitrogen and the Environment Sensing Technology / Patents
 Acres, OKLAHOMA, Net Revenue Estimates                                   
Hand Held Greenseeker Sensors (Many Pictures)

FIELD of VIEW (505 and Pocket Sensor)

 Sensor Field of View Greenseeker Sensor Field of View

FIELD of View NTech,
Greenseeker
  
1. History of Optical Sensing at Oklahoma State


2. Increasing NUE with Precision Agriculture

3. Hand-held GreenSeeker Sensors Commercially available


4. 
Alternative Uses of the Hand-Held Sensor


5. Analysis of Wet vs Dry Soil Readings


6. Dirty Lenses from soil and fertilizer.  How does this affect the Sensor?


7. 
CIMMYT Hand_Held Sensor Project, Erna Lukina, 1999
Patents

1.  Raun, W.R., G.V. Johnson, J.B. Solie, and M.L. Stone. 2003. Process for in-season fertilizer nitrogen application based on predicted yield potential.  US Patent No. 6,601,341 B2. Issued, August 5, 2003.

2.  Stone, M.L., D. Needham, J.B. Solie, W.R. Raun, and G.V. Johnson. 2003. Optical spectral reflectance sensor and controller. US Patent No. 6,596,996 B1, Issued July 22, 2003.

3.  Raun, W.R., G.V. Johnson, J.B. Solie, and M.L. Stone. 2004. A process for in-season fertilizer nitrogen application based on predicted yield potential. U.S. Patent. 10,195,138. (CIP of U.S. Patent 6,601,341).

4.  Raun, W.R., G.V. Johnson, J.B. Solie, M.L. Stone, K.W. Freeman. 2005. Use of within-field-element-size CV for improved nutrient fertilization in crop production.  US Patent No. 10,801,563 (Allowed).

5.  Raun, W.R., G.V. Johnson, J.B. Solie, and M.L. Stone. April 19, 2005. A process for in-season fertilizer nitrogen application based on predicted yield potential. U.S. Patent. 6,880,291.

6.  Stone, M.L., D. Needham, J.B. Solie. W.R. Raun, and G.V. Johnson. 2005. Optical Spectral Reflectance Sensor and Controller.  U.S. Patent. 6,855,933, Cont. of 6,596,996.
 

Sensors
Absorption of Light


GreenSeeker Hand Held NDVI sensor for improved nitrogen use efficiency How do the N Sensors Work?

Does the Green Seeker Sensor work when the Field of View is Compromised?

Green Seeker™ (Red NDVI) Performance Review, Testing Summary)
 

History of Optical Sensing at Oklahoma State

Latest VIDEO of the OSU-NTech Applicator and News Release

Hand-held GreenSeeker Sensors Commercially available