1. Ag Center. Informação sobre o impacto ambiental nas comunidades agrícolas; fornece, ainda, informações acerca do modo de reduzir os níveis de poluição e da boa utilização das mais recentes tecnologias para a prevenirem.
   
2. AgDomain.com: The Master Site for Agriculture  
   
3. Aglinks. World Wide Web Sites of Interest to Agriculture. Ligações a recursos da Internet relacionados com a agricultura.
4. AgNIC Agricultural Conferences, Meetings, Seminars Calendar
5. Agriculture 21
   
6. Agriculture Hotlists, the Biggies. Lista de ligações internet aos mais importantes sites sobre agricultura.
   
7. Agriculture WWWs
   
8. Agrigate
9. AgriGator : Agricultural and Related Information Site Index
   
10. AgriSurf!
    
11. AgView 
    
12. ARS Image Gallery 
    
13. Biobased Products and Bioenergy Initiative 
    
14. The FAO Global Information and Early Warning System on Food and Agriculture (GIEWS)
15. A History of American Agriculture, 1776-1990. Farmers and the Land. Cronologia e elementos estatísticos relacionados com a ocupação agrícola dos Estados Unidos da América.
    
16. INFOMINE: Scholarly Internet Resource Collections. Biological, Agricultural & Medical Sciences  
    
17. Inverizon International
    
18. National Environmentally Sound Production Agriculture Laboratory: NESPA
19. New Uses Council Home Page
20. Not Just Cows: A Guide to Internet/Bitnet Resources in Agriculture and Related Sciences
    
21. NOVAGate: Nordic Gateway to Information in Forestry, Veterinary and Agricultural Sciences 
    
22. USDA Online Photography Research 
    
23. World Food Programme
24. World Wide Web Virtual Library. Agriculture 
    
25. WWW VL for Agriculture Commercial Agricultural Sites 
    

Índices e Resumos

1. AGRICOLA
   
2. AGRIS
   
3. Biological and Agricultural Index
   
4. CAB Abstracts  
   
5. CARIS
   
6. Food Science and Technology Abstracts 
   
7. Water Resources Abstracts 
   

Economia Agrícola e Estatística

1. AgEcon Search AgNIC: Agricultural and Applied Economics Resources on the Internet
   
2. AgNIC Agribusiness Web Site 
   
3. AgriBiz 
   
4. AgriBiz Daily News Headlines 
   
5. Agricultural Economics Virtual Library  
6. Agricultural Market Information Virtual Library
7. Agricultural Statistics
   
8. Agricultural Trader's Resource Center 
   
9. Census of Agriculture, 1987, 1992, 1997 
   
10. The FAO Global Information and Early Warning System on Food and Agriculture (GIEWS)
11. FAOSTAT: FAO Statistical Databases
    
12. Global Agribusiness Information Network
    
13. Links for Agricultural Economists  
    
14. Market Information System 
    
15. Statistical Highlights of U.S. Agriculture
    
16. Statistical Resources on the Web
17. StratSoy
    

Agronomia

1. African Agricultural Research
   Agricultural research for food security, environmental sustainability and economic development in Africa.
2. AgNIC Plant Science Homepage
   Provides links to plant-related information, including a reference service, genetics and taxonomy, plant protection, crop production, electronic publications, education, people and association, reference tools and the AgNIC project.
3. Agronomic Links
   Provides links to useful and informative agronomic sites.
4. Agronomic Links Across the Globe
   Gateway to websites organized under international, national, state, and miscellaneous headings. ("US National" category is subarranged by topic.) Links are annotated.
5. The ARS Pesticide Properties Database 
   This database has been developed to provide quality modelers and managers with a list of pesticide qualities that are most important for predicting the potential of pesticides moving into ground and surface waters under a range of weather and soil conditions. Information focuses on 16 of the most important properties that affect pesticides transport and degradation characteristics.
6. BeanRef
   A collection of links and references from literature to different aspects of research on beans (Phaseolus and Vigna)  
7. Center for Crops Utilization Research 
   The Center "is responding to the urgent need to improve American agricultural competitiveness by developing new products, markets, and processing techniques, as well as by improving our understanding of the basic properties of agricultural products and their components"--Center overview.
8. CICP
   Home page of the Consortium, whose principal purpose is to assist developing nations reduce food crop losses caused by pests while also safe-guarding the environment.
9. Corn Connection
   Links to sources of information about managing, growing, harvesting, storing and marketing grain corn and corn silage crops and about corn itself.
10. CyberFarm!   --  Links are provided to many sites relating to sustainable agriculture.
11. Demeter's Genomes
    Provides links to plant genome databases, grouped by crop genomes, small lean genomes and cross-genome integration. The user can search each database individually by selecting the offered query options.
12. European Cooperative Programme for Crop Genetic Resources Networks (ECP/GR) 
    Home site of ECP/GR, which is a collaborative program among most European countries aimed at ensuring the long-term conservation and facilitating the increased utilization of plant genetic resources in Europe. The Programme, which is entirely financed by the participating countries and is coordinated by the International Plant Genetic Resources Institute (IPGRI), operates through ten broadly focused networks dealing with groups of crops or general themes related to plant genetic resources.
13. EXTOXNET : the EXtension TOXicology NETwork 
14. Germplasm Enhancement of Maize
    Provides a description of the cooperative effort of the United States Department of Agriculture's Agricultural Research Service, land-grant universities, and industry to widen the germplasm base of commercial hybrid corn in the United States through the introduction and incorporation of novel and useful germplasm gathered from around the globe. 
15. Glossary of Soil Microbiological Terms
16. Glossary of Soil Science Terms
    The SSSA has published definitions or glossaries of soil science terms since 1956. These glossaries were developed by various terminology committees of SSSA. New terms were carried as appendices in the five revised editions of the Glossary published from 1971 through 1979, plus a supplement in October 1982. The 1984 revision incorporated a policy that all acceptable terms appear in a single alphabetical list. Appendices would include obsolete terms, tabular information, proposed new terms or guidelines, etc. This revision of the Glossary does not have a separate list of obsolete terms. None of the terms in the Glossary of Soil Science Terms is considered official by the SSSA. They are published in an effort to provide a foundation for common understanding in communications covering soil science.
17. GrainGenes: Links
    GrainGenes is a compilation of molecular and phenotypic information on wheat, barley, oats, rye and sugarcane. This site has links to university websites, agricultural research centers, agronomy-related websites, articles, companies and organizations, government and websites for geneticists, agronomists and pathologists.
18. Healthy Land, Clean Water for Life
    Home page of the Society. Its mission statement declares that it fosters the science and the art of soil, water, and related natural resource management to achieve sustainability.
19. ILDIS: International Legume Database & Information Service
    ILDIS is an international project which aims to document and catalogue the world's legume species diversity in a readily accessible form. Research groups in many countries are participating on a co-operative basis to pool information in the ILDIS World Database of Legumes, which is used to provide a worldwide information service through publications, electronic access and enquiry services.
20. Improved Conservation Plants
    Provides a description of the Plant Materials Program which has produced a number of databases containing a wide variety of information about plant materials and other work taking place in the Program.
21. International Plant Genetic Resources Institute 
    Home site of the IPGRI, which works to strengthen the conservation and use of plant genetic resources, in partnership with other organizations, undertaking research, training and the provision of scientific and technical advice and information.
22. International Soil Reference and Information Centre = Internationales Bodenreferenz und Informations-Zentrum
    Centre for documentation, research, and training about the world's soils, with emphasis on the resources of developing countries.
23. Keys to Soil Taxonomy
    Provides the taxonomic keys necessary for the classification of soils according to Soil Taxonomy in a form that can be used easily in the field, and it also acquaints users of Soil taxonomy with recent changes in the classification system. This publication includes all revisions of the keys that have so far been approved, replacing the original keys in Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys (1975), the work on which this abridged version, first published in 1983, is based.
24. Land, Soil and Water Internet Resources
    A selection of key sources of interest to researchers in the field of land, soil and water use.
25. Maize Genetic Cooperation Stock Center
    The Maize Genetics Cooperation Stock Center is part of the National Plant Germplasm System (NPGS). The Center specializes in maize genetic stocks. Includes the history of the Cooperation and discusses the collection at the Center, which includes nearly 80,000 individually pedigreed samples. Highlights the services offered, such as the Maize Genome Database and a newsletter. Offers information on the value of the stocks.
26. The Maize Page
    Provides links to a variety of resources for students, producers and specialists: general, technical and product information; information on corn diseases; yields and hybrid seed trials, genes and germplasm; market and cost of product information.
27. MaizeDB: Welcome to MaizeDB, the Maize Genome Database
    Provides user-friendly internet access to the maize genome as the basis for the biology of maize.
28. Major World Crop Areas and Climatic Profiles Online Version
29. MEL, The Michigan Electronic Library: Science & the Environment: Crop and Soil Resources
    Collection of links to agriculture and agronomy Web sites.
30. National Commission on Small Farms 
    Provides a link to a USDA report which outlines the policy goals for a national strategy which supports small farms, and a link to Commission membership.   
31. The National Plant Germplasm System (NPGS)
    The National Plant Germplasm System is a cooperative effort by state, federal, and private organizations to preserve the genetic diversity of plants. This is done by acquiring, preserving, evaluating, documenting, and distributing crop germplasm resources. This site allows searching of the GRIN system and provides links to germplasm repositories, as well as related web sites.
32. National Soil Data Access Facility
    Provides links to the various national soils databases (MUIR, OSD, SC, and soil characterization databases).
33. Photo Herbarium 
    A photo database of over 200 common American herbs, plants, and weeds, searchable alphabetically by common or scientific name.
34. Plant Genetic Resources for Food and Agriculture
    Contains an overview and documents of FAO's work promoting conservation of plant genetic resources worldwide, as well as a comprehensive list of links to relevant sites.
35. Plant Genome Data and Information Center
    Provides links to a variety of information services and publications covering many aspects of plant genome mapping.
36. Plant Sciences Institute  
37. Plant Introduction Station
    One of four regional centers, the station maintains seed (germplasm) collections of 30,000 individual lines.
38. PLANTS Database
    Focuses on the vascular and nonvascular plants of the United States and its territories. The PLANTS database includes checklists, distributional data, crop information, plants symbols, plant growth data, references and other plant information.
39. SeedQuest: Information Services for Seed Professionals 
    Provides news and information, a global directory of the seed industry (associations, companies, organizations, people), seed suppliers, brokers, dealers, industry suppliers of software, financial services, legal services and more.
40. Soil Science Society of America
    
41. Soilweb: Interesting Soil Web Sites
    
42. SoyBase Home Page
    
43. Soybean Tissue Culture and Genetic Engineering Center
    
44. State of the Land
    
45. StratSoy 
    
46. System-Wide Information Network for Genetic Resources: Singer, the CGIAR System-Wide Information Network for Genetic Resources
    
47. UK CropNet Databases
48. United States Department of Agriculture OPMP, Office of Pest Management Policy, PIAP, Pesticide Impact Assessment Program
    
49. USDA Nematology Lab Home Page 
    
50. USDA NRCS: Natural Resources Conservation Service 
    
51. VARC: Virtual Alfalfa Research Center
    
52. VegEdge 
    
53. Weed Related WWW's & Other Weed Resources
    
54. Winter Cereal Production 
    Cultura de cereais de inverno no Canadá
55. The World of Corn
    Estatíscas sobre a produção de milho
56. World Soil Resources Web Site 
    resources/agricultural links.
57. World Wide Soil Jumpstation
    Agricultura e horticultura
58. World Wide Web Virtual Library. Grains 
    Culturas
59. World Wide Web Virtual Library. Irrigation and Related Topics 
    Sobre irrigação
60. World Wide Web Virtual Library. Soils and Substrates
    Ligações para dados sobre os solos, livros, jornais e revistas científicas, labotatórios e organizações bem como para outros sites.