I recently purchased some seed for Kodiak mustard cover crop without reading much about it before. After getting home and researching it, I found the following description: "Kodiak (Brassica juncea): Suppresses soilborne fungal pathogens and nematodes, produces more biomass than other varieties".
I also came across this article " When (if) You Should Use Mustard to Fumigate"
http://www.homesteadandgardens.com/use-mustards-fumigate-soil/ which made me question whether I should even use it. Is this article overblown?
My initial plan was to use this in beds that will be planted in late spring. Will this destroy the soil life I have been working to build? Would it be effective at reducing symphalans? Are garden beds an appropriate place to use it? How about under fruit trees? I am particularly thinking it might be effective cover under a peach tree that has had some off and on curl.