Agriculture Reference
In-Depth Information
IDIR
o
Open field direct solar radiation
I
e
Radiation intensity that passes through the considered canopy layer
I
o
Solar radiation intensity (irradiance) on a perpendicular plane to the radia-
tion direction
IOBC
International Organization for Biological Control
IP
Integral proportional (type of regulator)
IPM
Integrated pest management
IPP
Integrated production and protection
IR
Infrared
IR-PE
Infrared or thermal polyethylene
IT
Thermal integral
K
Global heat transfer coefficient of a greenhouse cover; also designates the
radiation extinction coefficient of a canopy
K
Kelvin
K
2
SO
4
Potassium sulfate
K
c
Crop coefficient
KCl
Potassium chloride
KNO
3
Potassium nitrate
K
p
Pan coefficient
K
s
Soil water storage efficiency coefficient
L
Wavelength; 'l' also designates litre
LAI
Leaf area index
LAR
Leaf area ratio
LAT
Latitude
LCA
Life cycle analysis or life cycle assessment
LD-PE
Long duration polyethylene
LDPE
Low density polyethylene
LED
Light emitting diode
LF
Leaching fraction
LPG
Liquefied petroleum gas
LVDT
Lineal variable displacement transducer
LWR
Leaf weight ratio
Ly
Langley
m
Air mass renewed when ventilating a greenhouse, per unit time
MAP
Modified atmosphere packaging
meq
Milliequivalent
min
Minute
MIR
Medium infrared
MNSV
Melon necrotic spot virus
N
Maximum number of sunny hours per day; N also designates the north (car-
dinal point)
n
Real number of sunny hours per day
NADPH
Energetic organic molecule (nicotine adenine dinucleotide phosphate)
NAR
Net assimilation rate
NFT
Nutrient film technique
NGS
New growing system (type of NFT)
(NH
4
)
2
HPO
4
Biammonium phosphate
(NH
4
)H
2
PO
4
Monoamonium dihydrogen phosphate
(NH
4
)
2
SO
4
Ammonium sulfate
NIR
Near infrared
NO
x
Nitrogen oxides
