This implies that the structural complexity of heather causes no problems for the infective larvae.
The heather stems had been trimmed so that each had a vertical stem that extended 7 cm above the soil surface.
After constant exposure, significantly more larvae were recovered from heather than from either of the control plants.
The highest numbers were recovered from the heather stems; the lowest numbers were recovered from the wheat stems (fig. 3).
In the first group of eight trays, five heather stems were planted at distances 2, 4, 6, 8 and 10 cm from the centre.
Significantly more larvae of both nematode species were recovered in the region of the heather than the grass or controls.
To examine whether larval migration was as efficient on heather as on a monocotyledon or on a structurally simple dicotyledon we undertook a second experiment.
As he says, 'many a heather-covered hillside is a gravestone to a once awe-inspiring volcano'.
