Field Notes

<--2020-06-23 00:00:00 | 2020-07-08 13:45:00-->
Other sites visited today: Bouldin Alfalfa | East End | West Pond
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Bouldin Corn: 2020-07-01 11:10:00 (DOY 183)
Author: Daphne Szutu
Others:

Summary: Regular data collection/cleaning, new game cameras from Arable, no data on PA card, LAI, veg height, biomass samples

2020-07-01
Bouldin Corn

I arrived at 11:10 PDT. It was a warm and breezy day. As I arrived, a farm employee (Ben?) stopped and said they would start irrigating soon via the spud ditches. Most of the corn plants look good; the volunteer area has shorter plants with skinnier leaves and brown tips on the leaves.

The wash reservoir was mostly full; I topped it off. I saw two new game cameras on the tower, installed by Arable. One is looking out toward the horizon and one is looking down toward the ground. I cleaned flux and rad sensors.

I downloaded met, camera, USB GHG, zcams, and FD data. I cleared both FD chambers after downloading them. I also took 5 clip plots samples, veg height measurements, and 2-wand LAI measurements.

There were no data on the PA card. I added a new microSD cable, but it was hard to confirm that the cable plugged in securely. I took the PA down from its hose clamps to check that the cable was plugged in and left it on the boardwalk for about 20 minutes. I saw a few log files on the card so the new cable works. However, I might have jostled the cable when I clamped the PA back onto the tower, so hopefully there will be data on the card next time.

LI-7500 readings:
CO2 386ppm
H2O 790ppm
T 26.6C
P 100.2kPa
SS 96-->103 after cleaning
LI7700 readings:
CH4 1.96ppm
RSSI 37-->77 after cleaning

I left at 13:30 PDT.

Veg Height (cm): Tape measure from ground to top of plant
184, 197, 216, 195, 202, 215, 185, 193, 209, 209, 200, 193, avg = 199.8, stdev = 10.7

3 photos found

20200701BC_PanoVolunteers.jpg ( 2020-07-01 11:39:15 ) Full size: 1920x1177
Corn plants look good, except for the dense area with volunteer plants. The volunteers are shorter, lighter green, and have thinner leaves with browning tips.

20200701BA_PaCable.jpg ( 2020-07-01 12:55:34 ) Full size: 1440x1920
Excess cable tied up with a ziptie on the PurpleAir sensor

20200701BA_GameCameras.jpg ( 2020-07-01 11:29:27 ) Full size: 1440x1920
Two new game cameras on the tower, installed by Arable. Hopefully we can access the real-time photos.