EveryOneSmokes
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Thanks for the info bro, it shows you really care about this issue or issues to clarify misleading or misinterpreted information..There aren't many published studies with B. firmus in relation to D Dipsaci, The few that pop up are studies performed in an in vitro setting.
The above quotes you copy and pasted on post #434 were taken from the same book whatthe215 just provided a link to. Interrelationships Between Microbial Antagonists Having Divergent Modes-of-action...
By Alexander Rafael Mendoza Luna
The link @SpiderKid provided Biocontrol Science and Technology The study was also done an in vitro setting, it also says " In general, juveniles of D. dipsaci were less affected by B. firmus culture filtrates than the other tested nematodes (Table 3)."
You gotta remember the primary disadvantages of in vitro studies is it can be challenging to extend the application/result from an in vitro setting back to the intact plant/biology.. Most people that will use these products aren't doing tissue cultures. So there must be a reason why products like Poncho-Votivo & Nortica WP did not include D. dipsaci in their list of target pests.
While studies show it was helpful to a degree but Its a little far fetched to say B Firmus will get rid of D. dispcaci, from the tad bit of info you provided. The studies showed it was far more effective for R. similis (Burrowing Nematode) & M, Incognita (Root-knot-nematodes) in vitro. This could be a costly investment if someone was to buy Nortica WP based on your post and later find out it doesn't work, so its best to be 100% sure it does work by providing more supporting field evidence or personal experience...
Much respect bro, keep me in the loop once u hear back..
Yet I still have concerns about nematodes being the the sole reason behind dud'ing... This would imply that a dud'd plant being grown in medium that will be recycled would harbor nematodes and later infect any other plant later transplanted in the medium, and this is what has me very confused because my current run is healthy with no signs of dud'ing... But I hear more people are seeing signs of nematodes in there duds
@whatthe215 I have those trunks ready, let's see what we got..