Book excerpt: Plant Nematode Biology and Parasitism; Migratory ectoparasites; Soybean: Glycine max; Peanut (groundnut): Arachis hypogeae; Other beans and peas; Vegetables; Vegetable crops; Flowers; Flower crops; Cereais; Rice: Oryza sativa; Maize: Zea mays L.; Wheat: Triticum aestrivum; Root and Tuber Crops; Potato: Solanum tuberosum; Sweet potato: Ipomoea batatas; Yams: Dioscorea spp.; Cassava: Manihot esculenta; Taro: Colocasia esculenta; Ginger: Zingiber officinale; Carrot: Daucus caro ta; Sugar beet: Beta vulgaris; Tree, Plantation, and Cash Crops; Banana and plantain: Musa spp.; Black pepper: Piper nigrum; Citrus crops; Coconut: Cocos nucifera; ail palm: Elaeis guineensis; Cotton: Gossypium spp.; Tobacco: Nicotiana tabacum; Coffee: Coffeae spp.; Sugarcane: Saccharum officinarum; Pineapple: Ananas comosus; Deciduous fruit and nut crops; Collection, Extraction, and Preservation of Nematodes for Oiagnosis; Collecting samples; Care of samples after collection; Extraction of nematodes from soiI and plant samples; Staining nematodes in plant tissues; Nematode identification.