Using Infrared Thermometers for Plant Science Research - Mark Blonquist

Описание: In this video Mark Blonquist, Chief Scientist at Apogee Instruments, discusses estimating crop water status using an infrared radiometer, as well as, how to use them to measure surface temperature.

OUTLINE

01:00 INFRARED RADIOMETERS
(01:00) Operation
(03:47) Calibration

05:02 SURFACE TEMPERATURE MEASUREMENT
(05:50) Correcting for surface emissivity
(10:34) Field-of-view

13:48 CHALLENGE OF PARTIAL CANOPY COVER
(14:13) Angle radiometer
(14:42) Model to account for soil temperature

15:32 CROP WATER STATUS ESTIMATION
(18:22) Crop water stress index (CWSI)
(25:19) Canopy stomatal conductance

Idso, S.B., R.D. Jackson, P. J. Pinter Jr., R. J. Reginato, and J. L Hatfield, 1981. Normalizing the stress degree-day parameter for environmental variability. Agricultural Meteorology 24:45-55. https://www.researchgate.net/profile/...

Jackson, R. D., S. B., Idso, R. J. Regianto, and P.J. Pinter Jr., 1981. Canopy temperature as a crop water stress incicator. Water Resources Research 17:1133-1138.
https://naldc.nal.usda.gov/download/5...

Blonquist Jr., J. M., J.M. Norman, and B. Bugbee, 2009. Automaed measurement of canopy stomatal conductance based on infrared temperature. Agricultural and Forest Meeorology 149:1931-1945.
https://www.researchgate.net/profile/...

Apogee Instruments Field-Of-View Calculator https://www.apogeeinstruments.com/irr...