SUBJECT
Rice
Research
80
Diseases and pests
50
Agriculture
41
Varieties
39
Congresses
24
Planting
24
Agricultural innovations
16
Weed control
15
Economic aspects
14
Genetics
14
Rice research
13
Fertilizers and manures
12
Hybrid rice
11
Soils
11
Breeding
10
Agriculture and state
8
Control
8
History
8
Irrigation
8
Biotechnology
7
Rice farmers
7
Sustainable agriculture
7
Weeds
7
Biological control
6
Yields
6
Agricultural extension work
5
Climatic factors
5
Cropping systems
5
Crops and climate
5
Fertilizers
5
Identification
5
Integrated control
5
Pests
5
Rice breeding
5
Rice trade
5
Upland rice
5
Grain
4
Rural conditions
4
Agricultural geography
3
Agricultural productivity
3
Agricultural research
3
Agricultural systems
3
Analysis and chemistry
3
Geographical distribution
3
Green manuring
3
Insect pests
3
Irrigation farming
3
Machinery
3
Milling
3
more ...