Earth & Environmental Sciences
maize
100%
drought
76%
crop
65%
irrigation
63%
evapotranspiration
63%
soil
46%
groundwater
45%
ecosystem
45%
soybean
42%
plain
41%
water
36%
nitrogen
34%
growing season
32%
climate
32%
MODIS
31%
vegetation
31%
soil moisture
30%
canopy
29%
energy balance
28%
watershed
28%
monitoring
28%
remote sensing
27%
rate
27%
aquifer
27%
grassland
26%
index
26%
eddy covariance
25%
soil water
25%
primary production
25%
effect
25%
manure
23%
vegetation index
23%
sensor
22%
steroid
22%
nitrate
22%
productivity
21%
agriculture
21%
biomass
20%
modeling
20%
evaluation
20%
land surface
19%
carbon
19%
river
18%
NDVI
18%
Landsat
18%
method
18%
antibiotics
18%
calibration
18%
temperature
17%
nutrient
17%
lake
17%
soil property
17%
prairie
17%
runoff
17%
surface water
17%
analysis
16%
ecological resilience
16%
water use
16%
prediction
16%
climate change
16%
weather
15%
policy
15%
beef cattle
15%
indicator
15%
land
15%
water management
15%
crop yield
15%
drug
15%
cosmic ray
15%
water stress
15%
science
15%
detection
14%
water budget
14%
reflectance
14%
leaf area index
14%
adaptive management
14%
wetland
14%
cost
14%
recharge
14%
antibiotic resistance
14%
comparison
13%
phenology
13%
fertilizer
13%
energy
13%
phosphorus
13%
grass
13%
net ecosystem exchange
13%
hormone
13%
cover crop
13%
gene
13%
distribution
13%
surface energy
13%
sediment
12%
economics
12%
experiment
12%
simulation
12%
sand
12%
light use efficiency
12%
trend
12%
decision
12%
Agriculture & Biology
corn
89%
evapotranspiration
60%
ecosystems
48%
crops
46%
nitrogen
44%
remote sensing
43%
soil
42%
gross primary productivity
42%
drought
40%
soybeans
39%
water
38%
irrigation
35%
soil water
34%
canopy
32%
eddy covariance
29%
moderate resolution imaging spectroradiometer
29%
growing season
27%
monitoring
27%
methodology
26%
Landsat
23%
vegetation
22%
grasslands
22%
uncertainty
22%
sensors (equipment)
21%
carbon
21%
vegetation index
21%
aquifers
21%
energy balance
21%
groundwater
20%
prediction
20%
climate
20%
calibration
20%
ecological resilience
19%
nitrogen fertilizers
19%
biomass
19%
reflectance
18%
Juniperus virginiana
17%
cropland
17%
image analysis
16%
temperature
16%
nozzles
16%
weather
16%
nitrates
16%
water stress
16%
wheat
16%
irrigation management
16%
soil properties
15%
phenotype
15%
cover crops
15%
grain yield
15%
water management
15%
Corn Belt region
15%
crop yield
14%
irrigation rates
14%
irrigation water
14%
phosphorus
14%
testing
14%
tillage
13%
nutrients
13%
animal manures
13%
rice
13%
agriculture
13%
climate change
13%
no-tillage
13%
water budget
13%
meteorological data
13%
surface water
13%
heat
12%
runoff
12%
case studies
12%
leaves
12%
rivers
12%
Pinus ponderosa
12%
net ecosystem exchange
12%
lakes
11%
phenology
11%
biodiversity
11%
irrigation scheduling
11%
herbicides
11%
economics
11%
wetlands
11%
water quality
11%
water use efficiency
11%
time series analysis
11%
Zea mays
11%
unmanned aerial vehicles
11%
Bellamya
11%
leaching
11%
crop coefficient
11%
sampling
11%
normalized difference vegetation index
11%
planting
10%
cropping systems
10%
farmers
10%
invertebrates
10%
artificial intelligence
10%
photosynthetically active radiation
10%
ecosystem respiration
9%
tractors
9%
habitats
9%
Engineering & Materials Science
Soils
75%
Crops
71%
Irrigation
65%
Water
56%
Drought
44%
Evapotranspiration
34%
Sensor networks
32%
Sensors
32%
Soil moisture
32%
Antibiotics
30%
Groundwater
27%
Nitrogen
26%
Runoff
25%
Ecosystems
24%
Unmanned aerial vehicles (UAV)
23%
Beef
23%
Manures
22%
Watersheds
22%
Monitoring
21%
Rivers
21%
Wireless sensor networks
21%
Remote sensing
20%
Biomass
20%
Pesticides
19%
Nitrates
18%
Nutrients
17%
Herbicides
17%
Impurities
17%
Sediments
16%
Communication
16%
Wastewater
16%
Surface waters
16%
Antennas
15%
Steroid hormones
15%
Agriculture
14%
Aquifers
14%
Water management
13%
Rain
12%
Experiments
12%
Nozzles
11%
Costs
11%
Precision agriculture
11%
Lakes
11%
Life cycle
11%
Phosphorus
11%
Veterinary Drugs
10%
Phase transitions
10%
Sustainable development
10%
Temperature
10%
Fertilizers
10%
Genes
9%
Energy balance
9%
Productivity
9%
Sand
9%
Leaching
9%
Infrared radiation
9%
Enzymatic hydrolysis
9%
Economics
9%
Drug products
9%
Wastewater treatment
9%
Sampling
9%
Air
9%
Birefringence
9%
Farms
8%
Robotics
8%
Fluxes
8%
Water quality
8%
Uncertainty
8%
Water resources
8%
Calibration
8%
Carbon
8%
Contamination
8%
Aircraft
7%
Silt
7%
Land use
7%
Biofuels
7%
Infiltration
7%
Environmental impact
7%
Wetlands
7%
Ethanol
7%
Satellites
7%
Testbeds
7%
Ponds
7%
Effluents
7%
Biodiversity
6%
Animals
6%
Energy utilization
6%
Pollution
6%
Scheduling
6%
Precipitation (meteorology)
6%
Health
6%
Robots
6%
Conservation
6%
Organic chemicals
6%
Cameras
6%
Controllers
6%
Bacteria
6%
Cognitive radio
6%
Industry
6%
Electric Conductivity
5%