Agriculture & Biology
irrigation systems
72%
border irrigation
55%
systems engineering
45%
water distribution
43%
runoff
36%
fluid mechanics
34%
infiltration (hydrology)
31%
irrigation
28%
sprinklers
27%
unsaturated hydraulic conductivity
27%
microirrigation
23%
chemigation
21%
gravity
20%
evapotranspiration
18%
water
18%
solutes
17%
hoses
16%
soil
16%
application rate
14%
drain pipes
14%
cost estimates
13%
irrigation and drainage
12%
furrow irrigation
11%
innovation adoption
10%
crop coefficient
10%
soil water movement
10%
methodology
10%
permeameters
10%
water utilization
10%
crops
10%
mathematical models
10%
field methods
10%
pumps
10%
hydraulic conductivity
10%
microcomputers
10%
geographic information systems
9%
lysimeters
9%
water requirement
9%
education programs
9%
orchards
9%
steady flow
9%
water management
9%
cost effectiveness
8%
Ethiopia
8%
prototypes
8%
economics
8%
decision making
8%
drainage
8%
soil properties
8%
water quality
8%
Earth & Environmental Sciences
irrigation system
45%
irrigation
45%
border
27%
hydraulics
23%
water
23%
runoff
22%
crop
20%
drainage
16%
evapotranspiration
15%
crop yield
15%
hydraulic conductivity
14%
gravity flow
13%
distribution
12%
furrow irrigation
11%
soil
11%
inflow
11%
groundwater
11%
demand
10%
farm
9%
water quality management
9%
lysimeter
9%
microcomputer
9%
agriculture
9%
loss
9%
rate
9%
sizing
8%
organization
8%
drip irrigation
8%
crop production
8%
trial
8%
solute
8%
water budget
8%
rainwater
8%
Africa
8%
permeameter
8%
allocation
8%
economics
8%
point source
7%
parameter
7%
ranking
7%
drain
7%
pipe
7%
infiltration
7%
watershed
7%
food
7%
water resource
7%
soil property
7%
geographic information system
7%
satellite data
7%
water management
7%
Engineering & Materials Science
Irrigation
100%
Evapotranspiration
40%
Water
36%
Runoff
36%
Soils
32%
Systems analysis
27%
Crops
27%
Hydraulics
26%
Hydraulic conductivity
21%
Groundwater
21%
Drainage
17%
Geographic information systems
16%
Lysimeters
15%
Water quality
13%
Watersheds
12%
Bulletin boards
11%
Agriculture
11%
Sugars
11%
Water management
10%
Water resources
10%
Flow rate
10%
Quality management
9%
Farms
9%
Extrapolation
8%
Microcomputers
8%
Erosion
8%
Pipe
7%
Multiobjective optimization
7%
Gravitation
7%
Economics
7%
Acoustic impedance
5%
Decision making
5%
Nitrogen
5%
Hose
5%