plant production
      cropping/cultivation systems
          intensive cropping
          extensive cropping
      plant genetic resources
      plant biology
      plant breeding
      plant nutrition
      plant protection/IPM
      cultivation technologies
      plant policies
      plant residues
      green manure
      horticulture
          fruit growing
          arboriculture
          floriculture
          vegetable growing
          viticulture
          cultural soils and substrates

  animal production
      animal breeding
      animal husbandry/technologies
      animal genetic resources
      animal policies
      animal nutrition
      animal biology
      fodder/forage
      animal manure
      animal health
          veterinary hygiene
          veterinary surgery
          animal diseases & diagnosis
          epidemiology

  aquaculture & fishery
      freshwater
      brackishwater
      seawater
      aquatic policies
      breeding
      aquatic technologies
      aquatic genetic resources

  forestry
      forest ecology
      forest policies
      forest genetic resources
      forest management
      forest technologies
      forest protection
          hazards
          fires
          pests
          decline

  soil
      soil conservation
      soil systematics
      soil fertility
      soil chemicophysical properties

  water
      irrigation
      drainage
      water & sanitation
      water conservation
      hydrology
      water management
      water policies

  environment
      climatology
      ecosystems
      biodiversity
      wildlife management/protection
      landuse & management
      environmental policies
      GIS
      alternative resources
      desertification

  farming systems
      agroforestry
      agropastoral systems
      mixed farming
      ecological agriculture
      shifting cultivation
      urban agriculture

  technology & engineering
      agricultural buildings
      biotechnology
      postharvest
      animal traction

  food technology & human nutrition
      health and nutrition
      food and nutrition policies
      food processing
          animal-based food
          plant-based food
          aquaculture-based food

  socioeconomics
      policies
          development policies
          research policies
          market and trade policies
          migration
          poverty
          information and documentation
      trade, markets and marketing
          capital markets
          commodity markets
          market information
      business management
          agroindustrial complexes
          small scale enterprises
          extension
      rural sociology
          gender issues
          land tenure

  other