Earth & Environmental Sciences
rice
100%
selenium
59%
selenite
49%
river basin
46%
irrigation
46%
paddy field
41%
alluvial plain
38%
selenate
37%
water quality
35%
cultivar
33%
crop
31%
gas exchange
30%
correspondence analysis
29%
salinity
28%
nutrient
21%
tissue
19%
genotype
17%
water
17%
groundwater
16%
sodium
14%
soil
14%
agricultural practice
14%
alluvial deposit
13%
sustainability
13%
river
12%
fold
11%
soil damage
10%
fertilizer
10%
alkalinization
10%
tributary
10%
natural resource
9%
demand
8%
protein
7%
staple food
7%
salinization
7%
crop production
7%
soil fertility
7%
loss
7%
twentieth century
7%
method
6%
water demand
6%
foodstuff
6%
effect
6%
allocation
5%
water management
5%
breeding
5%
diagram
5%
estuary
5%
leaching
5%
plain
5%
Agriculture & Biology
rice
53%
selenium
52%
Oryza sativa
47%
alluvial plains
43%
biofortification
40%
selenites
33%
Poaceae
27%
gas exchange
25%
basins
24%
crop yield
24%
paddies
23%
climate change
22%
selenates
22%
rivers
21%
drought
21%
dryers
19%
nutrients
16%
cultivars
15%
sodium selenate
14%
sodium selenite
12%
crops
12%
tissues
12%
leaves
11%
water shortages
10%
genotype
9%
Portugal
9%
oscillation
9%
dry season
8%
wet season
8%
weather
7%
agriculture
6%
staple foods
6%
farmers
6%
nutrient deficiencies
5%
bran
5%
spraying
5%
dosage
5%