| species of heterodera cysts in cereal fields in flanders. | heterodera is a genus of cyst-forming nematodes, including the cereal cysts which can provoke yield reductions in grain crops. as little is known about the occurrence of these cysts in belgian grain fields, a survey was organized, starting in flanders. soil samples were taken from 50 fields where cereals are grown in rotation with mainly beet, potato and vegetables. cysts were extracted from the 112 samples and 10 individuals per sample were identified up to species level by morphometrical and m ... | 2009 | 20222621 |