Agriculture & Biology
corn
81%
Corn Belt region
38%
crop models
27%
simulation models
26%
soybeans
24%
crops
20%
meteorological data
20%
China
19%
irrigation management
13%
water
13%
irrigation requirement
12%
irrigated conditions
11%
nitrogen fertilizers
11%
farms
10%
nitrogen
10%
soil
10%
irrigation
10%
plastic film
9%
grain yield
9%
mulching
9%
phenology
9%
temporal variation
9%
Ethiopia
8%
water use efficiency
8%
topographic maps
7%
crop yield
7%
agroclimatology
7%
temperature
7%
ecosystem respiration
7%
rice
7%
production technology
6%
weather
6%
cultivars
6%
subhumid zones
6%
crop management
6%
farmers
5%
Zea mays
5%
growing season
5%
water table
5%
rain
5%
water holding capacity
5%
natural resource management
5%
crop production
5%
soil water
5%
crop residues
5%
solar radiation
5%
plant available water
5%
high-yielding varieties
5%
agroecosystems
5%
water supply
5%
Earth & Environmental Sciences
maize
100%
crop
39%
soybean
31%
irrigation
28%
productivity
15%
simulation
14%
cultivar
13%
weather
11%
crop yield
10%
water
10%
production system
10%
modeling
9%
greenhouse gas emissions
9%
farm
9%
food security
9%
crop production
8%
ethanol
7%
cropping practice
7%
life cycle
7%
rice
7%
soil
7%
plain
6%
evaluation
6%
rhizosphere
6%
crop residue
6%
temperature
6%
soil moisture
6%
Africa
6%
atlas
6%
upscaling
6%
climatic zone
6%
growing season
6%
natural resource
5%
leaf area index
5%
analysis
5%
rooting
5%