Agriculture & Biology
legumes
100%
crops
81%
cropping systems
79%
soil
52%
barley
47%
nitrous oxide production
46%
rock phosphate
45%
phosphorus fertilizers
40%
nitrous oxide
37%
environmental impact
37%
pollinating insects
34%
intercropping
34%
ecosystem services
34%
oats
33%
Apios americana
31%
silage effluent
29%
organic production
27%
Pachyrhizus tuberosus
27%
leys
26%
games
25%
Lolium perenne
24%
Delia radicum
24%
viral morphology
24%
composts
23%
molybdenum
23%
Scotland
23%
grain crops
22%
soil management
22%
soil ecosystems
22%
nitrogen
22%
field experimentation
21%
reduced tillage
21%
Vicia
20%
spring barley
20%
phosphorus
19%
nitrogen fixation
19%
nitrogen balance
18%
agricultural soils
18%
vegetable crops
18%
fertilizers
18%
soil pH
18%
sustainable agriculture
18%
economic impact
18%
field crops
17%
cobalt
17%
peas
17%
pest management
17%
health services
17%
leaching
17%
cabbage
17%
Earth & Environmental Sciences
phosphate rock
42%
crop
35%
nitrous oxide
34%
barley
34%
soil
33%
fertilizer
27%
tillage
23%
silage
23%
organic farming
23%
compost
22%
rape (plant)
22%
pollinator
21%
alternative agriculture
20%
agricultural soil
18%
molybdenum
17%
management practice
17%
cobalt
17%
virus
16%
phosphorus
15%
cultivar
15%
farm
15%
phosphate
15%
soil property
14%
zinc
13%
agricultural land
13%
risk assessment
12%
leaching
12%
trace element
12%
nitrate
12%
effluent
11%
food
11%
plowing
10%
manure
9%
effect
9%
cereal
9%
loss
8%
forage
7%
grass
7%
cropping practice
6%
soil management
6%
crop rotation
6%
field experiment
6%
intercropping
6%
flowering
6%
flower
5%
wet season
5%
rainfall
5%
Medicine & Life Sciences
Soil
38%
Avena
35%
Fertilizers
31%
Fabaceae
24%
Hordeum
23%
Methane
22%
Agriculture
22%
Solanum tuberosum
22%
Edible Grain
22%
Viral Structures
21%
Biomass
20%
Carbon
16%
Medicago
13%
Viruses
12%
Phytochemicals
12%
Diet
11%
Peas
9%
delphinidin
9%
cyanidin
9%
Herbicides
9%
Fertility
8%
Molybdenum
8%
Anthocyanins
7%
Nutritive Value
7%
Rhizome
7%
Livestock
6%
North American Indians
6%
Manganese
6%
Genistein
6%
Climate
6%
Micronutrients
6%
Proteins
6%
Nitrogen
6%
Phosphorus
5%
Microbiota
5%
Scotland
5%
Zinc
5%
Polysaccharides
5%
Metagenomics
5%
Potassium
5%