| Citrus fruit - The different varieties.: Fruit, citrus fruit. Information about the citrus fruits. Nutritional values, use, storage, history, and particular characteristics. |
| Citrus Horticulture Program at SWFREC: We serve the extension and applied research needs for 179,093 acres of commercial plantings in the Southwest Florida Gulf Coast region. |
| Citrus Research & Education Center: University of Florida research, teaching and extension center devoted to citrus, addressing issues in horticulture, pests and diseases, and processing technology. Information about departments and facilities, list of publications. |
| Citrus Research International: Description of the research projects, the facilities and services offered and contact details. |
| Citrus Varieties and Rootstocks: Species descriptions and cultivation practices. |
| Florida Citrus: Geared toward the consumer, this site provides nutrition, recipe, and purchasing information, along with links. |
| Nagpur Mandarin: Information for citrus growers in central India. Includes fertiliser applications, pest and disease management. |
| NSW Agriculture Citrus Info: latest citrus research news, citrus contacts. As well as detailed information on growing citrus. |
| NSW Department of Primary Industries: Citrus: Collection of articles by Australian governmental agency on cultivating citrus, pests and diseases, soil management, and managing fruit quality. |
| Texas Citrus: Information and resources for citrus growers. |
| The Ultimate Citrus Page: Information and links regarding anything citrus related, from agriculture to weather. |
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