Field Notes

<--2015-07-22 10:30:00 | 2015-08-19 10:50:00-->
Other sites visited today: East End | West Pond | Mayberry | Twitchell Alfalfa

Twitchell Rice: 2015-08-06 11:00:00 (DOY 218)
Author: Joe Verfaillie
Others: Dennis, Sara, et fam

Summary: Swapped 7500, lots of weeds, clip plots, spectral, veg height, rice heading

Twitchell Rice
2015-08-06

I arrived about 11am with Dennis, Sara and family. It was hot and humid with a high thin overcast and almost no breeze. The water level seems a bit higher. The weeds are immense in our check. The tower is buried in weeds. The rice is beginning to set seed.

The 7700 read: 2.15ppm CH4, 47.8RSSI â€“ 60.1 after cleaning. There was lots of dirt on the spars and spiders in the cap. There were dirty spots in the middle of the mirror, but the wash box was almost full.

I swapped the 7500:
sn 75H-2514 off: 383.8ppm CH4, 852.6mmol/m3 H2O, 98.7SS, 26.3C, 101.5kPa
sn 0065 on: 395.4ppm CH4, 798.2mmol/m3 H2O, 74.3SS, 26.3C, 101.5kPa

Met was okay and the radiometers were clean. A big spider on the camera enclosure was chased away.

Sara did spectral measurements and veg height.

Dennis took clip plots.

Veg Height (cm): Tape measure from ground to top of plant - Lots of weeds; starting to seed
79, 86, 122, 74, 99, 127, 114, 64, 71, 66, 84, 79, 81, 107, 81, 69, 74, 66, 74, 89, avg = 85.3, stdev = 18.85

1 photos found

TW_autocam_20150806_1915.jpg ( 2015-08-06 19:15:02 ) Full size: 1920x1440
Nice sunset