Agriculture & Biology
water resources
90%
groundwater
85%
Citrus
73%
Japan
59%
agriculture
58%
groundwater contamination
53%
leachates
23%
water quality
19%
rocks
19%
fertilizer application
18%
pollution
16%
ions
14%
sampling
14%
farmers
13%
nutrients
11%
water
8%
Engineering & Materials Science
Water resources
100%
Groundwater
92%
Agriculture
86%
Contamination
25%
Groundwater pollution
24%
Fertilizers
16%
Nutrients
16%
Pollution
12%
Ions
12%
Rocks
11%
Water
7%
Earth & Environmental Sciences
inland sea
99%
water resource
59%
agriculture
56%
groundwater
47%
contamination
17%
groundwater pollution
15%
water-rock interaction
15%
fertilizer application
15%
leachate
12%
diagram
10%
pollution
8%
nutrient
8%
ion
8%
resource
7%
effect
3%
Chemical Compounds
Groundwater
84%
Groundwater Pollution
24%
Fertilizer
16%
Nutrient
14%
Environment
7%
Ion
5%
Application
4%