Earth & Environmental Sciences
data envelopment analysis
100%
water use
71%
irrigation system
63%
water use efficiency
56%
agriculture
54%
used water
40%
irrigation
36%
farm
24%
water
22%
farm size
14%
panel data
11%
conservation policy
11%
linear programing
10%
water conservation
9%
water storage
9%
water demand
9%
water table
8%
aquifer
6%
crop
6%
groundwater
5%
comparison
3%
effect
2%
method
2%
Agriculture & Biology
data analysis
70%
agriculture
55%
irrigation systems
49%
irrigation water
37%
water use efficiency
36%
water
31%
farm numbers
10%
aquifers
10%
flood irrigation
10%
farms
10%
linear programming
9%
water conservation
9%
water storage
9%
water table
9%
farm size
9%
groundwater
8%
managers
7%
farmers
5%
methodology
4%
crops
4%
testing
2%
sampling
2%