There is a statement in the article http://news.cornell.edu/stories/Nov11/…, that “farmers can limit the pest's distribution and damage through […] moist soils, as the nematode likes dry conditions.” In other texts I have read, that Ditylenchus dipsaci likes heavy and moist soils. Other information is, that when a field is infested one must not grow susceptible plants for 5 to 10 years on it. D. dipsaci belongs to quarantine orgnisms in many countries. See, for example: http://eppo.org/QUARANTINE/nematodes/… or http://plpnemweb.ucdavis.edu/Nemaplex/Taxadata/… . Marek Walnik, Poland ---------------------------------------------------------------- Nie zmieniaj opon, zmien auto! http://linkint.pl/f2a7c/ _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/