Field Notes

<--2017-08-09 10:40:00 | 2017-09-06 09:30:00-->
Other sites visited today: Twitchell Alfalfa | Sherman Wetland | East End | Bouldin Corn
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Bouldin Alfalfa: 2017-08-23 10:00:00 (DOY 235)
Author: Daphne Szutu
Others: Elke Eichelmann, Kyle Hemes

Summary: Regular data collection/cleaning, LAI, spectral, clip plots, veg height

2017-08-23
Bouldin Alfalfa

We arrived at 10:00. It was clear, sunny, and hazy near the horizon. The alfalfa is flowering and there are many yellow butterflies in the field.

Elke collected met, camera, and Licor GHG data and cleaned the rad and EC sensors.

LI7500 readings:
CO2 364.87 umol/mol
H2O 794.1 mmol/m3
T 22.75 C
P 101.37 kPa
SS 93.2 --> 99.5 after cleaning

Kyle measured veg height and took biomass clip plots.

Elke took spectral measurements - measurement 29 was accidentally took with cap on; discard the measurement.

I took LAI measurements. I set up one wand on a tripod as the above/reference measurement, and used the other wand to take scattering data ("BA0823SC") and LAI data with 10 above and 10 below measurements("BA0823"). I computed the data on the console and LAI ~ 1.7.

We left at 10:40.

Next Mowing: 2017-08-25

Veg Height (cm): Tape measure from ground to top of plant
44, 50, 40, 36, 43, 31, 46, 39, 43, 44, 41, 36, 39, 33, 46, 33, 60, 33, 48, 49, avg = 41.7, stdev = 7.15

1 photos found

bouldinalfalfa_2017_08_23_091607.jpg ( 2017-08-23 08:25:42 ) Full size: 1296x960
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