Field Notes

<--2017-07-14 11:35:00 | 2017-08-09 09:20:00-->
Other sites visited today: Sherman Wetland | Bouldin Alfalfa | Twitchell Alfalfa
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Bouldin Corn: 2017-07-26 09:35:00 (DOY 207)
Author: Ada Chang
Others: Daphne Szutu, Kyle Hemes

Summary: Successfully took LAI measurements, swapped 7500A

Arrived at 9:35. The weather was clear and sunny with a little breeze. The corn grew taller than Kyle. The wash reservoir was mostly full, but was topped off. The radiation sensors and EC sensors were cleaned.

BattV varies blt11.5 + 11.65
Soil is very dry -> VWC < 0.1

dfPAR CR10X serial number: sn 31308

Swapped the 7500 for calibration:
Coming Down: sn 75H-2182
Going Up: sn 75H-2668

LI7500 readings:
CO2 401.2 -> 393.5
H2O 699.1 -> 702.3
T 24.4 -> 25.8
P 101.7 -> 101.3
SS 85.4 -> 99.3

The 7700 looked pretty clean. There was a clock sync error. Daphne reset the box.

LI7700 readings:
CH4 1.94
RSSI 73.7 (after cleaning)

Successfully gathered data on the LAI. Took auto-logging data on Y-wand, but cut logging off before full 20 minutes—set up auto-logging first next time. First set of single wand data BCSC0726 was a scattering file that should be used for calibration. The next file—BC0726—consisted of a few measurements outside of the canopy and a few underneath. Final file—BC0726B—was taken one measurement above, one measurement below for five measurements within the canopy. Will develop a more consistent procedure before taking measurements in the field next time.

Changed vegetation height procedure. While sampling biomass, the height of the plants in the first 30 cm in each sampling site was measured. At alternating sites, plants were taken as samples from the first 30 cm.

Biomass and Vegetation Height (cm):
Sample 1 – 6 plants (2 taken)
190
186
Sample 2 – 4 plants
134.5
161
Sample 3 – 9 plants (3 taken)
230
228
190
Sample 4 – 8 plants
135.5
241
Sample 5 – 4 plants (3 taken)
174
209
243
Sample 6 – 7 plants
254
245
Sample 7 – 7 plants (2 taken)
211
189
Sample 8 – 9 plants
253
253
254
Sample 9 – 8 plants (3 taken)
249
247
228
Sample 10 – 6 plants
261
244

Left at 11:00.

Veg Height (cm): Tape measure from ground to top of plant - Measured by DB and KH
190, 186, 134.5, 161, 230, 228, 190, 135.5, 241, 174, 209, 243, 254, 245, 211, 189, 253, 253, 254, 249, 247, 228, 261, 244, 214, 201, 184, 195, 197, 199, 201, 205, 195, 218, avg = 212.3, stdev = 33.4

1 photos found

Ada and Kyle taking LI-2200 LAI measurements
20170726BC_Ada2200.JPG ( 2017-07-26 10:35:00 ) Full size: 1080x1440
Ada and Kyle taking LI-2200 LAI measurements

Graphs display:
6 sets found

17 BC_met graphs found

Explore the graph:Battery Voltage in a new window

Explore the graph:Soil Heat Flux in a new window

Explore the graph:Temperature in a new window

Explore the graph:Solar Radiation in a new window

Explore the graph:Air Pressure and RH in a new window

Explore the graph:Soil Moisture in a new window

Explore the graph:Bouldin Corn PAR in a new window

Explore the graph:NDVI channels in a new window

Explore the graph:PRI Channels in a new window

Explore the graph:Soil Temperatures Set A in a new window

Explore the graph:Soil Temperatures Set B in a new window

Explore the graph:Soil Temperatures Set C in a new window

Explore the graph:SRS NDVI and PRI in a new window

Explore the graph:Surface Temperature in a new window

Explore the graph:Forced Diffusion CO2 in a new window

Explore the graph:Forced Diffusion Soil CO2 Flux in a new window

Explore the graph:Surface Temperature in a new window

5 BC_flux graphs found

Explore the graph:LI-7500 CO2 and H2O in a new window

Explore the graph:7700 CH4 and RSSI in a new window

Explore the graph:Wind in a new window

Explore the graph:Counts in a new window

Explore the graph:CO2 in ppm in a new window

Can't check TATWBABCSB_cam
Can't check MBSWEEWPBCBA
No data found for BC_pa.
No data found for BC_arable.