Knowledge Area (KA) Codes

Knowledge Area (KA) Codes are required for all projects submitted to USDA. This link provides a listing of all the KA codes to accommodate the broad focus of research, higher education, and extension work sponsored by USDA.


101 Appraisal of soil resources

102 Soil, plant, water, nutrient relationships

103 Management and sustainability of saline and sodic soils and salinity

104 Protect soil from harmful effects of natural elements



111 Conservation and efficient use of water

112 Watershed protection and management


Forest and range resources

121 Management of range resources

122 Management and control of forest and range fires

123 Management and sustainability of forest resources

124 Urban forestry

125 Agroforestry


Natural resources, general

131 Alternative uses of land

132 Weather and climate

133 Pollution prevention and mitigation

134 Outdoor recreation

135 Aquatic and terrestrial wildlife

136 Conservation of biological diversity



141 Air resource protection and management


Plant production

201 Plant genome, genetics, and genetic mechanisms

202 Plant genetic resources

203 Plant biological efficiency and abiotic stresses affecting plants

204 Plant product quality and utility (preharvest)

205 Plant management systems

206 Basic plant biology


Plant protection

211 Insects, mites, and other arthropods affecting plants

212 Pathogens and nematodes affecting plants

213 Weeds affecting plants

214 Vertebrates, mollusks, and other pests affecting plants

215 Biological control of pests affecting plants

216 Integrated pest management systems


Animal production

301 Reproductive performance of animals

302 Nutrient utilization in animals

303 Genetic improvement of animals

304 Animal genome

305 Animal physiological processes

306 Environmental stress in animals

307 Animal management systems

308 Improved animal products (before harvest)


Animal protection

311 Animal diseases

312 External parasites and pests of animals

313 Internal parasites in animals

314 Toxic chemicals, poisonous plants, naturally occurring toxins, and other hazards affecting animals

315 Animal welfare/well-being and protection


Agricultural, natural resource, biological engineering

401 Structures, facilities, and general purpose farm supplies

402 Engineering systems and equipment

403 Waste disposal, recycling, and reuse

404 Instrumentation and control systems

405 Drainage and irrigation systems and facilities



501 New and improved food processing technologies

502 New and improved food products

503 Quality maintenance in storing and marketing food products

504 Home and commercial food service



511 New and improved non-food products and processes

512 Quality maintenance in storing and marketing non-food products


Economics, markets, and policy

601 Economics of agricultural production and farm management

602 Business management, finance, and taxation

603 Market economics

604 Marketing and distribution practices

605 Natural resource and environmental economics

606 International trade and development

607 Consumer economics

608 Community resource planning and development

609 Economic theory and methods


610 Domestic policy analysis

611 Foreign policy and programs


Human nutrition

701 Nutrient composition of food

702 Requirements and function of nutrients and other food components

703 Nutrition education and behavior

704 Nutrition and hunger in the population


Food safety

711 Ensure food products free of harmful chemicals, including residues from agricultural and other sources

712 Protect food from contamination by pathogenic microorganisms, parasites, and naturally occurring toxins


Human health

721 Insects and other pests affecting humans

722 Zoonotic diseases and parasites affecting humans

723 Hazards to human health and safety

724 Healthy lifestyle


Families, youth, and communities

801 Individual and family resource management

802 Human development and family well-being

803 Sociological and technological change affecting individuals, families, and communities

804 Human environmental issues concerning apparel, textiles, and residential and commercial structures

805 Community institutions, health, and social services

806 Youth development


Program and project support and administration, education, and communication

901 Project and program design, and statistics

902 Administration of projects and programs

903 Communication, education, and information delivery