Ja. Lamondia, MANAGEMENT OF MELOIDOGYNE-HAPLA IN HERBACEOUS PERENNIAL ORNAMENTALS BY SANITATION AND RESISTANCE, Journal of nematology, 29(4), 1997, pp. 717-720
Meloidogyne hapla can be spread in bare-root herbaceous perennial prop
agation material and may be difficult to control once established in n
ew fields or in the landscape. Root pruning of bare-root plants was in
vestigated as a means of reducing spread and establishment of M. hapla
. Plants previously inoculated with 10,000 eggs/plant were root-pruned
to remove either a portion or most of the fibrous root system without
removing underground stems, buds, tubers, or tuberous roots. Root pru
ning of Aconitum, Ajuga, Anemone, Geranium, and Trollius significantly
reduced or eliminated M. hapla galls and egg production in plants 1 t
o 4 months after propagation. Planting M. hapla-resistant plants such
as Rudbeckia and Aster into pots infested with 10,000 eggs/pot elimina
ted M. hapla populations after 2 to 6 months of growth. Tomato plants
grown after Rudbeckia and Aster were free of galls and eggs, while bio
assay tomatoes grown after susceptible plants such as Coreopsis, Primu
la, and Lobelia were heavily galled with a large number of egg masses.
These results demonstrate the potential of sanitation and resistance
for management of M. hapla in perennials.