*3.2.2 Radiation reflection coefficient*

Radiation reflection influences directly net radiation availability for the ET process. The darker the vegetation, the lower the reflection coefficient and the higher net radiation [13, 16].

#### *3.2.3 Leaf area index (LAI) in different growth stages of plant*

LAI in different growth stages of a plant is directly related to the size of the transpiring foliar surface, for the larger leaf area the larger the transpiring surface, and the higher the potential for water use [13, 16].

### *3.2.4 Plant height*

Plant height also influences the ET. Taller and rougher plants interact more efficiently with the atmosphere in motion, extracting more energy from the air and, therefore, increasing ET [13, 16].
