1. Cotton Sensor Research Update
Randy Taylor, JC Banks, Shane Osborne, Tim Sharp, John Solie, and Bill Raun

2. Mobile Sensor Platform

3. GreenSeeker Data
Measuring NDVI directly over the row with four sensors and between the rows with three sensors
Collected data from research plots and farmers’ fields on multiple dates

4. NDVI from Farmers’ Fields
June 28-29, 2006 over-the-row data only

5. Experiment 439 Long term N, P, and K fertility plots
14 treatments and 4 reps
Sensed on June 19 and July 25

6. July 25 Fertility Plots

7. 2006 Yield

8. Sensor Data – July 25

9. Plant Height for

10. Estimating Canopy Closure

11. NDVI Over the Row
Coron Plots – Altus 2006

12. NDVI Between Rows
R2=0.79

13. NDVI Ratio {BR/OR}
R2=0.72
Coron Plots – Altus 2006

14. NDVI by Initial N Applied
Significant Difference

15. Sensing Date and Sensor Location
Over-the-Row
Row Middle
6/28 NS
7/17
8/01
8/09
Trt, Fert
8/15
Fert
8/30