Field Notes

Bouldin Alfalfa: 2023-09-28 12:25:00 (DOY 271)
Author: Daphne Szutu
Others: Robert

Summary: Regular data collection/cleaning, short alfalfa

2023-09-28
Bouldin Alfalfa

Robert and I arrived around 12:25 PDT. It was sunny, windy, and clear. It smelled like sheep and/or poop when we got out of the car, but there were no sheep in sight. Later it started smelling more like silage—maybe that’s what we were also smelling initially.

The alfalfa is short and there are no more bales on the field.

I checked the undercanopy PAR sensor and it was clear of litter. It was tilted slightly to the south, so I re-leveled it.

Robert took spectral data. Halfway through, the jaz seemed to get stuck on taking the reference point. Robert power cycled the jaz and all seemed ok.

I downloaded met, cam, USB GHG, FD, and IRT data. I cleaned the flux and rad sensors; SWin and LWin sensors were both dirty, from bird feet probably. I changed the eddy clock +1:45min from 11:48:45 to 11:50 PST to match the laptop time and restarted logging.

The 7500 read: 403ppm CO2, 514mmol/m3 H2O, 26.2C, 101.2kPa, 96SS--99 after cleaning

We left at 12:55 PDT.

Next Mowing: 2023-10-17

1 photos found

bouldinalfalfa_2023_09_28_114505.jpg ( 2023-09-28 19:45:20 ) Full size: 1296x960
Fieldwork, spectral measurements