Research progress on pheromone ascarosides in nematodes Advances in the Study of Endophytes to Control Plant Parasitic Nematodes Investigation on Parasitic Nematodes Associated with the W ild Grapes Native to China The Investigation and Identification of Plant parasitic Nematodes on Ornamental Plants in Baotou Area Infection characteristics of nematophagous fungus Esteya vermicola to plant parasitic nematodes Investigation on Parasitic Nematodes Associated with the W ild Grapes Native to China Spatial distribution characteristics of plant-parasitic nematodes in cultivated horizon of a site-specific experimental field Using nematicidal plant resources to control plant parasitic nematodes Progress of researches on activity of Bacillus thuringiensis against plant-parasitic nematodes