1. CROP-WEED COMPETITION 
2. WEED SHIFTS 
3. MODE OF ACTION OF HERBICIDES 
4. SELECTIVITY OF HERBICIDES
5. CLIMATIC FACTORS AND PHYTOTOXICITY OF HERBICIDES 
6. FATE OF HERBICIDES IN SOIL 
7. RESIDUE MANAGEMENT OF HERBICIDES 
8. ADJUVANTS
9. HERBICIDE APPLICATION TECHNIQUES 
10. HERBICIDE RESISTANCE 
11. HERBICIDE ANTIDOTES
12. HERBICIDE INTERACTIONS 
13. TRANSGENIC HERBICIDE RESISTANT CROPS
14. HERBICIDE DEVELOPMENT 
15. BIOHERBICIDES 
16. ALLELOCHEMICALS 
17. HERBICIDE BIOASSAYS