Subject
agriculture
117
crop
67
agronomy
65
plant breeding
36
soil
28
forestry
26
food production
20
green genetic engineering
20
cultivated plant
19
ecosystem
17
plant protection
16
transgenic plant
16
ecology
14
fertilization
14
forest
14
plant
14
climatic change
13
fertilizer
13
plant growth
13
soil chemistry
13
agricultural use
12
plant ecology
12
tree
12
forest decline
11
pesticide
11
nitrogen
10
nutrition
10
plant physiology
10
soil pollution
10
plant soil relationship
9
breeding
8
genetic engineering
8
greenhouse
8
greenhouse gas
8
nutrient
8
pollution control
8
rice
8
wood
8
climatology
7
food quality
7
fruit
7
nitrate
7
potato
7
soil microbiology
7
vegetable
7
drought
6
landscape
6
plant metabolism
6
renewable resource
6
soil biology
6
more ...