- Plant Sciences 6
- Plant Physiology 5
- Agriculture 4
- Plant Genetics and Genomics 3
- Soil Science & Conservation 3
- Biochemistry, general 2
- Biomedicine, general 2
- Cell Biology 2
- Ecology 2
- Life Sciences, general 2
- Plant Pathology 2
- Biotechnology 1
- Entomology 1
- Forestry 1
- Nutrition 1
- Plant Systematics/Taxonomy/Biogeography 1