Plant physiology 39 Cytology 33 Cell biology 29 Entomology 25 Histology 24 Microbes 21 Plant Protection 21 Micro-organisms 19 Fungi 18 Mycology 17 Homescience 16 Organic chemistry 16 Bacteriology 14 Botany 14 Microbiology 14 Radiochemistry 14 Genetics 13 Agricultural chemistry 12 Zoology 12 Virology 9 mycology 9 Agriculture 8 Home science 8 Soil science 8 Bacteria 7 Biology 7 Food science 7 Micro organisms 7 Pest control 7 Plant development 7