Field Notes

Twitchell Alfalfa: 2017-10-26 10:50:00 (DOY 299)
Author: Daphne Szutu
Others: Joe, Sam

Summary: Regular data collection/cleaning, installed stardot camera biomass samples (clip plots), vegetation height measurements, Licor soil co2 was not working

2017-10-26
Twitchell Alfalfa

We arrived at 10:50. It was sunny and clear, but hazy on the horizon. We disturbed a burrowing owl while we drove through the field. It bobbed up and down indignantly.

Joe cleaned the EC and radiation sensor and reinstalled the StarDot camera sn 0030F4D2148D (missing the sliding mount). Sam started Licor soil CO2 readings, but the instrument was not working (Sam - more details). Sam took 5 clip plot samples and I took veg height measurements.

I downloaded met, soilCO2, camera, and USB GHG data.

LI-7500 readings:
CO2 449.8 ppm
H2O 581.5
T 25.1
P 101.4
SS 96.1 --> 99.5 after cleaning

We left at 11:20.

Veg Height (cm): Tape measure from ground to top of plant
19, 14, 5, 9, 10, 8, 14, 6, 13, 12, 17, 8, 10, 16, 9, 10, 11, 9, 16, 7, avg = 11.2, stdev = 3.86

0 photos found

7 sets found

Can't check TA_met
11 TA_met graphs found