Agriculture Reference
In-Depth Information
e
i
Plant solar radiation interception efficiency
(
e
i
×
e
b
)
Crop solar radiation use efficiency
q
Zenith angle; also designates soil moisture content
l
Thermal conductivity coefficient
r
Reflectivity or reflection coefficient
s
Stefan-Boltzman constant (5.67 10
8
W m
-2
K
-4
)
S
Summation
t
Transmissivity or transmission coefficient
t
dif
Transmissivity to diffuse radiation
F
Energy flux
F
rad
Radiation energy flux
F
T
Air volumetric flux by thermal effect
F
w
Air volumetric flux by wind effect
Y
g
Gravitational potential
Y
m
Matrix potential
Y
s
Osmotic potential
Y
soil
Soil water potential
′
Minute
″
Second
°
Degree
°C
Celsius degree
°F
Fahrenheit degree
K
Kelvin
