Field Notes
<--2017-04-11 10:50:00 | 2017-05-10 11:00:00-->Other sites visited today: Bouldin Corn | Bouldin Alfalfa | Mayberry | Sherman Wetland | West Pond | East End
Twitchell Alfalfa: 2017-04-27 10:35:00 (DOY 117)
Author: Daphne Szutu
Others: Sam Chamberlain
Summary: Regular data collection/cleaning, veg height
| 2017-04-27 Twitchell Alfalfa We arrived at 10:35. It was mostly sunny and breezy. The alfalfa are taller than before so it looks more dominant than the grass. Previously, it looked like a mix of alfalfa and grass, and now it looks like mostly alfalfa. Sam took soil respiration measurements. We cleaned the radiation and 7500 sensors. I took veg height measurements, which were a mix of alfalfa and grass. I collected the met, soil CO2 and USB GHG data and swapped the camera card. LED sensors have intermittent NANs. LED(1) is about half NANs. I checked the mux wiring and the sensor cables and they look okay. LI7500 readings: CO2 398.5 umol/mol H2O 486.9 mmol/m3 T 19.1 Celsius P 101.8 kPa SS 90.6 -> 92.3 after cleaning We left at 11:05. |
Veg Height (cm): Tape measure from ground to top of plant - mix of alfalfa and grass
57, 53, 50, 52, 55, 46, 49, 51, 70, 65, 44, 65, 72, 50, 58, 45, 57, 37, 54, 45, avg = 53.8, stdev = 9.01
0 photos found
7 sets found
Can't check TA_met
11 TA_met graphs found
Can't check TA_rad
3 TA_rad graphs found
Can't check TA_flux
5 TA_flux graphs found
Can't check TA_soilco2
7 TA_soilco2 graphs found
No data found for TA_arable.
1 TA_cam graphs found
Can't check TATWBABCSB_cam