Field Notes

Twitchell Alfalfa: 2017-11-30 14:25:00 (DOY 334)
Author: Daphne Szutu
Others: Elke, Kyle

Summary: Regular data collection/cleaning, add Arable solar panel, sheep in field

2017-11-30
Twitchell Alfalfa

We arrived at 14:25. It was sunny, calm, and cool, with thin high clouds. There were sheep fences set up right up next to our tower, and the field to the west of the tower has been thoroughly mowed by sheep. We had to park next to the fences and jumped a low fence to get to our tower. There were sheep to the east of our tower, with some very fresh lambs.

We decided not to put out the castor oil pellets (squirrel repellents) today so that we did not accidentally dose the sheep.

I collected met, soil CO2, camera, and USB GHG data.

LI-7500 readings:
CO2 379.3 ppm
H2O 473 mmol/m3
T 17.6 C
P 101.9 kPa
SS 93 --> 99 after cleaning

Kyle installed a supplemental solar panel for the Arable Mark and cleaned the EC and radiation sensors.

Elke took soil respiration measurements.

We left at 15:20.

2 photos found

20171130TA_Arablesolar.JPG ( 2017-11-30 15:16:30 ) Full size: 1920x1440
Supplemental solar panel added to Arable Mark. Sheep grazing right next to tower.