Field Notes

Bouldin Alfalfa: 2019-01-18 15:20:00 (DOY 18)
Author: Daphne Szutu
Others: Dennis, Kuno, Camilo, Jiangong

Summary: Regular data collection/cleaning, veg height, spectral

2019-01-18
Bouldin Alfalfa

Dennis, Kuno, Camilo, Jiangong, and I arrived at 15:20. It was calm and cool, mostly overcast with some weak sunlight. There were sheep on the field with Tylerâ€™s chambers, but our field hasnâ€™t been grazed.

We refilled the wash reservoir; it was 2/3 empty. Camilo and Jiangong took veg height measurements. Dennis took spectral measurements. Kuno cleaned the flux and rad sensors. The Arable had condensation inside its plastic dome. There were ants in the datalogger enclosure, so I left some mothballs in there.

I downloaded met, camera, USB GHG, and FD data. After downloading, I cleared the FD chamber memory and checked the clock (it matched system time). There was a 7700 clock sync error. I set the 7700 to auto, reset the box, but still saw the error. I set the 7700 back to slave, reset the box, and there was a flickering error. I then disconnected the 7700 in the 7550 software, reset the box, reconnected the 7700 in the 7550 software, and that resolved the time sync error. I checked that the 7700 was connected, the USB was logging, and that the GHG columns looked good.

LI-7500 readings:
CO2 412ppm
H2O 550ppm
T 16.3C
P 102.6kPa
SS 107-->108 after cleaning

LI7700 readings:
CH4 2.0ppm
RSSI 32 --> 81 after cleaning

We left at 15:50.

Next Mowing: 2019-01-22

Veg Height (cm): Tape measure from ground to top of plant - Measured by CRS
32.5, 24, 26, 33, 34, 28, 29, 20, 28, 32, 34, 22, 30, 35, 37, 24, 33, 31, 38, 30, avg = 30, stdev = 4.92

1 photos found

20190118BA_DaphneTower.jpg ( 2019-01-18 00:00:00 ) Full size: 1920x1440
Daphne at Bouldin Alfalfa tower with nice green alfalfa.