Field Notes

<--2018-04-19 11:20:00 | 2018-05-10 12:10:00-->
Other sites visited today: Bouldin Alfalfa | East End | Mayberry | Sherman Wetland | West Pond | Bouldin Corn | East Pond
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Twitchell Alfalfa: 2018-05-03 10:45:00 (DOY 123)
Author: Daphne Szutu
Others: Kyle, Alex, Dennis

Summary: Regular data collection/cleaning, veg height measurements

2018-05-03
Twitchell Alfalfa

We arrived at 10:45. It was windy, mostly clear, and sunny. The vegetation is still short, mostly grass and some nettle and alfalfa. We didn’t do LAI or spectral measurements or clip plot samples since we are taking this tower down soon and will miss most of the 2018 growing season.

Dennis took veg height measurements. Kyle and Alex cleaned the radiation and flux sensors and the Arable sensor and solar panels. I collected met, soil CO2, camera, and USB GHG data.

LI-7500 readings:
CO2 396ppm
H2O 550ppm
T 16.5C
P 102kPa
SS 100 --> 101 after cleaning

We left at 10:55.

Veg Height (cm): Tape measure from ground to top of plant - Grass and alfalfa
26, 28, 24, 22, 17, 14, 23, 26, 16, 26, 29, 20, 23, 15, 16, 21, 22, 25, avg = 21.8, stdev = 4.62

0 photos found

Graphs display:
7 sets found

Can't check TA_met
11 TA_met graphs found

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Can't check TA_rad
3 TA_rad graphs found

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5 TA_flux graphs found

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Can't check TA_soilco2
7 TA_soilco2 graphs found

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1 TA_arable graphs found

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1 TA_cam graphs found

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Can't check TATWBABCSB_cam