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Table 3 Correlation coefficients determined for canopy temperature and dT with climate conditions measured at the same time, as daily averages and as cumulated values for precipitation

From: Remote, aerial phenotyping of maize traits with a mobile multi-sensor approach

Climate parameters

 

Canopy temperature

dT

  

°C

°C

Canopy temperature (TC)

°C

1 ***

0.72

Air temperature (TA)

°C

0.96 **

0.51

Daily maximum temperature (TM)

°C

0.93 *

0.7

Gust speed

m s−1

−0.58

−0.14

Vapour pressure deficit (VPD)

kPa

0.23

−0.06

Actual radiation

μmol s−1 m−2

0.68

0.89 *

Precipitation (7 days cumulated)

mm

0.26

0.44

Evapotranspiration (ETo)

mm day−1

0.45

0.88 *

Sun hours

h day−1

0.74

0.97 **

  1. Thermal data from das 1275°Cd, was excluded because plants showed already advanced senescence.
  2. Significance codes are: ‘***’ p-value < 0.001, ‘**’ p-value < 0.01 and ‘*’p-value < 0.05.
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Plant Methods

ISSN: 1746-4811