- Agriculture 96
- Plant Physiology 96
- Plant Sciences 75
- Plant Anatomy/Development 48
- Soil Science & Conservation 33
- Ecology 28
- Plant Genetics and Genomics 18
- Plant Biochemistry 14
- Plant Pathology 12
- Plant Systematics/Taxonomy/Biogeography 8
- Plant Ecology 6
- Organic Chemistry 5
- Plant Breeding/Biotechnology 5
- Life Sciences, general 4
- Forestry 3