title: Estimation of field populations of cyst forming nematodes of the genus Heterodera.
mesh_terms: D000818:Animals; D003560:Cysts; D009348:Nematoda; D012987:Soil / Q000469:parasitology*; D014431:Tylenchoidea
chemical_list: D012987:Soil
keywords: NEMATODA; SOIL/parasitology