Agriculture & Biology
irrigation systems
80%
border irrigation
61%
systems engineering
49%
water distribution
48%
runoff
40%
fluid mechanics
38%
infiltration (hydrology)
34%
irrigation
31%
sprinklers
30%
unsaturated hydraulic conductivity
30%
microirrigation
25%
chemigation
23%
gravity
22%
solutes
19%
water
19%
hoses
18%
soil
18%
application rate
16%
evapotranspiration
15%
drain pipes
15%
cost estimates
15%
irrigation and drainage
13%
furrow irrigation
12%
innovation adoption
12%
soil water movement
12%
methodology
12%
permeameters
12%
water utilization
11%
mathematical models
11%
field methods
11%
pumps
11%
hydraulic conductivity
11%
microcomputers
11%
geographic information systems
11%
education programs
10%
orchards
10%
steady flow
10%
water management
10%
crops
10%
cost effectiveness
9%
prototypes
9%
economics
9%
decision making
9%
drainage
9%
soil properties
8%
water quality
8%
clothing
8%
saturated hydraulic conductivity
8%
farms
8%
crop production
8%
Engineering & Materials Science
Irrigation
100%
Runoff
40%
Soils
36%
Water
35%
Hydraulics
29%
Groundwater
23%
Drainage
19%
Watersheds
13%
Bulletin boards
13%
Agriculture
13%
Water resources
11%
Quality management
10%
Farms
10%
Microcomputers
9%
Erosion
8%
Pipe
8%
Multiobjective optimization
8%
Gravitation
7%
Economics
7%
Acoustic impedance
6%
Decision making
6%
Nitrogen
6%
Hose
5%
Nonbibliographic retrieval systems
5%
Mathematical models
5%
Earth & Environmental Sciences
irrigation
50%
runoff
25%
crop yield
16%
hydraulic conductivity
16%
crop
15%
distribution
13%
groundwater
12%
evapotranspiration
12%
farm
11%
water quality management
10%
demand
10%
microcomputer
10%
agriculture
10%
rate
10%
sizing
9%
organization
9%
drip irrigation
9%
crop production
9%
trial
9%
solute
9%
rainwater
9%
Africa
8%
permeameter
8%
allocation
8%
economics
8%
parameter
8%
pipe
8%
food
8%
water resource
8%
soil property
7%
satellite data
7%
water management
7%
