1. AGRONOMY—THE CORE SUBJECT IN AGRICULTURE
2. NATIONAL AND INTERNATIONAL AGRICULTURAL RESEARCH INSTITUTES AND STATE AGRICULTURAL UNIVERSITIES IN INDIA 
3. TILLAGE, CROP STAND STRUCTURE AND PLANTING  GEOMETRY 
4. AGRICULTURAL METEOROLOGY IN INDIA 
5. GLOBAL WARMING AND CLIMATE CHANGE 
6. EFFECTS OF WEATHER ON CROP PRODUCTION 
7. CLOUD CLASSIFICATIONS AND CHARACTERISTICS 
8. STUBBLE BURNING