Field Notes
<--2017-06-23 13:12:00 | 2017-07-26 11:15:00-->Other sites visited today: Sherman Wetland | West Pond | East End | Bouldin Corn | Twitchell Alfalfa | Tonzi
Bouldin Alfalfa: 2017-07-12 09:33:00 (DOY 193)
Author: Ada Chang
Others: Dennis Baldocchi, Sam Chamberlain, Daphne Szutu
Summary: Regular data collection/cleaning, clip plots, veg height measurements, Attempted spectrometer and LAI measurements.
| Arrived at 9:33. The weather was sunny, clear and cool. Four-way sensor was very dirty. Tipped precipitation bucket at 10:50 and cleaned it. Collected USB MET CAM. LI7500 readings: CO2 387 -> 398 H2O 629 -> 639 T 22.7 P 101.32 SS 96.2 -> 100.3 Took spectrometer data. Conditions were perfect and clear. Took data by performing a reference and dark measurement and then five down-up readings. Then the reference/dark reading was repeated with another five down-up readings. The procedure might have been swapped on the first or third samples, so those would be up-down. However, the readings were taken by hitting the “SAMPLE†button, not the “SAVE†button, so the data may not have been saved. Took biomass samples using the 1600 cm2 clip plot and recorded sample heights. Took vegetation height measurements Sample Heights: Sample 1 – 37 cm Sample 2 – 41 cm Sample 3 – 57 cm Sample 4 – 43 cm Sample 5 – 36 cm Vegetation Height (cm): 39, 33, 43, 45, 37, 39, 47, 31, 38, 38, 28, 38, 32, 38, 35, 40, 32, 46, 36, 40 Attempted to collect LAI data, but machine showed zero-values consistently. Left at 10:18. |
Next Mowing: 2017-07-24
Veg Height (cm): Tape measure from ground to top of plant
39, 33, 43, 45, 37, 39, 47, 31, 38, 38, 28, 38, 32, 38, 35, 40, 32, 46, 36, 40, avg = 37.8, stdev = 5.07
0 photos found
7 sets found
5 BA_flux graphs found
21 BA_met graphs found
No data found for BA_arable.
Can't check TATWBABCSB_cam
Can't check MBSWEEWPBCBA
2 BA_processed graphs found
No data found for BA_adex.