Are there other plants which help? what about Pyrethrum? How do the Dutch control nematodes in the fields? Peter (UK) On Sun, Nov 6, 2011 at 11:42 PM, J. Agoston <agoston.janos123@gmail.com>wrote: > I have never seen in Holland to rotate the fields between crops.... > > Sowing Tagetes is a good biological way to reduce the nematodes, but you > cannot eliminate them. You have to keep Tagetes on the field for at least 2 > months, the longer the better. It is used mainly for the control of > Meloidogyne. The eggs will open if the Tagetes roots get near to them. The > invasional larvae (J2 - juveline nematodes) will enter the roots at their > tips, but this plant is not their host, so they will die within days. If > ther in nothing in the soil, the eggs wil lay there waiting for a host > plant's root for years. >