I know that in organic gardening French marigolds are used as a nematode repellent. There are beneficial nematodes as well however, and even ones that prey on others. Randy On Sat, Nov 5, 2011 at 9:51 AM, Richard Haard <richrd@nas.com> wrote: > This is a link from a Netherlands Flower Bulb grower, apparently > ' Nowadays all planting is done mechanically, using a 'fresh' field for > every crop. By this crop-rotation we minimize the risk of diseases' > > http://www.jubholland.nl/RetailEN/Kwekerij/ > > I would like to learn more about crop rotation protocols, what crops > follow and how many years between bulb crops. In a garden situation, or a > small field how much 'space ' is needed separating crops, or are there trap > crops to use as cover cropping for nematode, virus and root rot diseases. > > Rich H > On Nov 5, 2011, at 9:29 AM, Randall P. Linke wrote: > > > California's central coast. Gilroy, CA, about ten miles north of me, > calls > > itself the "Garlic Capital of the World". They have a big garlic > festival > > every year, but very little is grown there now. The area also used to > be a > > huge producer of cut flowers but that is all gone now too. > > > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ > -- * * A long habit of not thinking a thing wrong gives it a superficial appearance of being right. - Thomas Paine --- * *