Field Notes

Bouldin Alfalfa: 2019-06-20 09:40:00 (DOY 171)
Author: Daphne Szutu
Others: Kuno, Robert, Camilo

Summary: Regular data collection/cleaning, clip plots, spectral, LAI, veg height, removed sonic rangefinder and Arable, dropped USB stick in alfalfa somewhere, alfalfa mowed and baled

2019-06-20
Bouldin Alfalfa

Kuno, Robert, Camilo, and I arrived at 9:40. It was sunny and windy with clear skies. The alfalfa has been mowed and baled. New alfalfa growth is already up to my shins. The alfalfa under the tower was flowering, and Camilo trimmed it.

Kuno took clip plot samples and made spectral measurements. Robert did LAI and veg height measurements. Camilo cleaned flux and rad sensors and removed the sonic rangefinder sn URM06-001 to move to BC and the original Arable sn A000251 to bring back to the lab for now (no sense having three of them on the tower). I collected met, camera, USB GHG, and FD data. I dropped the empty USB stick somewhere and none of us could find it. We most likely refilled the wash reservoir.

LI-7500 readings:
CO2 382ppm
H2O 734ppm
T 19.9C
P 101.1kPa
SS 96--> 100 after cleaning
LI7700 readings:
CH4 1.90ppm
RSSI 35-->73 after cleaning

We left at 10:30.

Next Mowing: 2019-07-24

Veg Height (cm): Tape measure from ground to top of plant - Measured in NW Transect from Tower, ~5m between measurements
15, 37, 33, 34, 30, 34, 28, 34, 39, 32, avg = 31.6, stdev = 6.62

0 photos found

7 sets found

5 BA_flux graphs found