Earth & Environmental Sciences
ecoregion
80%
cropping practice
67%
water use
63%
wheat
61%
plain
51%
productivity
46%
winter
41%
fallow
26%
water conservation
23%
water
20%
effect
15%
agricultural research
14%
water yield
13%
decision support system
12%
long-term effect
12%
crop yield
12%
tillage
11%
research center
11%
semiarid region
11%
water storage
11%
limiting factor
11%
field experiment
10%
soil water
9%
health
7%
simulation
4%
soil
4%
Agriculture & Biology
High Plains (United States)
100%
ecoregions
86%
arid lands
73%
winter wheat
64%
no-tillage
58%
water
27%
water conservation
24%
fallow
20%
organic production
20%
water yield
15%
soil water storage
13%
agricultural extension
13%
wheat
12%
decision support systems
11%
conventional tillage
10%
agricultural research
10%
water holding capacity
9%
arid zones
9%
long term effects
9%
tillage
9%
crop yield
8%
Triticum aestivum
8%
soil
4%
Medicine & Life Sciences
Triticum
82%
Water
45%
Conservation of Water Resources
27%
Soil
16%
Decision Support Techniques
8%
Health
3%