Use this guide to perform background research to refine a research topic, confirm terminology, and get a general understanding before finding books and articles to support a research project.
Up-to-date information on 10,000 pests, diseases, weeds and natural enemy species worldwide. Over 3,700 complete datasheets, provided by over 1,100 specialists. Data for over 200 different crops and over 150 countries, with global and regional distribution maps. Over 8000 images allowing for easy identification of crop pests. Background information on 10,000 pests, diseases, weeds, and natural enemy species providing a complete archive.
The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories. Fact Sheets provide brief descriptions of a plant, its uses, and cultural recommendations. Plant Guides are similar but more extensive. Both are provided as PDFs. The database also includes an image gallery of photos and line drawings of U.S. plants plus cultivated or foreign taxa.
Search or browse across 13 subject encyclopedias and dictionaries with over 80,000 entries. References are linked via Get VText.