Field Notes

Bouldin Alfalfa: 2020-02-20 10:55:00 (DOY 51)
Author: Joe Verfaillie
Others: Daphne, Robert

Summary: Standard data collection, swapped 7500, alfalfa re-growing after grazing.

Bouldin Alfalfa
2020-02-20

Daphne, Robert and I arrived at 10:55. It was sunny and mild with high thin clouds and a breeze from the north. The alfalfa was green re-growing after being grazed but still short with bare ground visible between plants.

Daphne collected the data and Robert cleaned the sensors and swapped the 7500: sn 75H-2176 came off and sn 0035 went on.
2176 off: 441ppm CO2, 413mmol/m3 H2O, 15.5C, 102.1kPa, 101SS
0035 on: 429ppm CO2, 383mmol/m3 H2O, 15.9C, 102.3kPa, 100SS
Uploaded the new config file, updated pressure coefficients and reset box.

The 7700 read: 2.2ppm CH4, 66RSSI â€“ 78 after cleaning
The wash reservoir was full.

I did spectral. The incoming light was a little variable. I also did veg height but is was heterogeneous with bare patches of ground visible.

We downloaded the FD Chamber data and cleared its memory. The serial line got disconnected in the process and we may have waited longer than necessary for the memory clearing to complete but all seemed well in the end.

Robert sprayed off the solar panels.

We left at 11:30

Next Mowing: 2020-04-25

0 photos found

7 sets found

5 BA_flux graphs found