Agriculture & Biology
tracer techniques
66%
alluvial plains
53%
irrigation
52%
woodlands
50%
piedmont
43%
vadose zone
29%
orchards
29%
groundwater recharge
28%
lithology
27%
testing
26%
China
21%
wheat
21%
corn
20%
infiltration (hydrology)
19%
irrigation rates
18%
groundwater
18%
bromides
18%
crops
17%
arid zones
17%
cotton
13%
Earth & Environmental Sciences
farming system
72%
recharge
59%
tracer
52%
plain
34%
irrigation
28%
test
26%
woodland
21%
orchard
17%
alluvial plain
17%
piedmont
16%
wheat
13%
maize
13%
crop
10%
groundwater
9%
bromide
8%
semiarid region
7%
vadose zone
7%
cotton
7%
rate
7%
lithology
6%
infiltration
6%
experiment
2%
Engineering & Materials Science
Irrigation
79%
Tracers
77%
Orchards
40%
Groundwater
31%
Crops
29%
Arid regions
21%
Lithology
19%
Infiltration
15%
Cotton
15%
Experiments
4%
Chemical Compounds
Irrigation
100%
Orchard
41%
Groundwater
28%
Bromide
9%