Agriculture Reference
In-Depth Information
CO
2
Carbon dioxide
C
p
Specific heat
CVYV
Cucumber vein yellowing virus
C
w
Wind effect global coefficient
CWSI
Crop water stress index
CYSDV
Cucurbit yellow stunting disorder virus
d
Distance between two plane surfaces; also designates day
DEC
Solar declination (angle)
DIF
Day/night temperature difference
DIF*
Direct solar radiation converted into diffuse radiation inside the greenhouse
DIF
i
Diffuse solar radiation inside the greenhouse
DIF
o
Open field diffuse solar radiation
DJ
Julian day
DMC
Dry matter of the harvestable product
DPI
Derived proportional integral (type of regulator)
E
Evaporation; also designates East (cardinal point)
E
0
Pan evaporation
E
a
Water application efficiency
e
a
Water vapour partial pressure
EC
Electrical conductivity
EC
e
Electric conductivity of the saturated soil extract
EC
w
Water electrical conductivity
EN
European norm (regulation)
e
s
Water vapour saturation pressure
ESP
Exchangeable sodium percentage
ET
Evapotranspiration
ET
0
Reference evapotranspiration
ET
c
Crop evapotranspiration
E
u
Emission uniformity (of water in drip irrigation)
EUREP
Euro-Retailer Produce Working Group
EVA
Ethylene vinyl acetate
f
Frequency
FAO
Food and Agriculture Organization of the United Nations
FC
Field capacity
FDR
Frequency domain reflectometry
FIAPA
Fundación para la Investigación Agraria en la Provincia de Almería
F
w
Wind force
g
Gravity
GAP
Good agricultural practices
H
Average height of the greenhouse
h
Solar elevation angle; also designates hour and hourly angle
H
2
O
Water
HALS
Hindered amine light stabilizers (photostabilizers used as plastic additives)
h
c
Convective heat transfer coefficient
HDPE
High density polyethylene
HFLI
High frequency localized irrigation
HI
Harvest index (dimensionless, expressed as a decimal or as a percentage)
h
S
Duration of half a day (radians)
i
Direct radiation angle of incidence
I
Solar radiation intensity (irradiance)
IDIR
i
Direct solar radiation inside the greenhouse
