Lacy phacelia (Phacelia tanacetifolia) is used in crop rotations for nematode population control, acting as a non-host for the beet cyst nematode and as a maintenance host for certain species of root-knot nematodes.
In the reference
12
varieties
crop Lacy phacelia,
where this is mentioned in the description.
Lacy phacelia exhibits selective activity against nematodes. For the beet cyst nematode (Heterodera schachtii), the crop acts as a non-host, which allows for the reduction of its soil population density by up to 30%.
Regarding the root-knot nematode (Meloidogyne hapla), phacelia acts as a maintenance host, ensuring stable pest population levels without significant growth during the growing season. The crop's ability to host Meloidogyne minor has also been recorded under experimental conditions.
General information about the subject — on the page
Nematodes.
Varieties of Lacy phacelia mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.