Chapter 15. Howard E. Waterworth. 1981. Control of plant disease by exclusion: quarantines and disease-free stocks. Pages 269-296. In: David Pimentel (editor). CRC Handbook of Pest Management in Agriculture. Volume 1, Boca Raton, Florida: CRC Press, 597 pages.

Keywords: definitions, history of quarantine and plant introduction, origin of crop plants worldwide, United States Federal Quarantine, economic basis for quarantine, National Plant Germplasm System, National Program Planning Staff, Animal and Plant Health Service (APHIS), flow of germplasm into the United States, categories of quarantine on plants and non-seed parts, restricted, post-entry, examples of prohibited plants, processing germplasm at the plant introduction quarantine station, percentage of vegetative plant introductions that were infected with one or more viruses, seed introduction, state quarantine, National Plant Board, Seed Improvement Associations, use of certified virus-free planting stock, virus infections, sources of virus-free stocks, potatoes, fruit crops, state departments of agriculture, foreign nurseries and research centers