The distribution of slugs in a potato crop.
A method of detecting slugs below ground, using recoverable potato baits in a medium heavy silt soil, is described. Arion hortensis and Milax buda-pestensis were most numerous at the 6 to 9 in. soil depth of the furrows in a potato crop and were active throughout the growing season. The preferential wetting of the soil in the furrows possibly explains the spatial distribution of the slugs; their distribution underground during the growing season accounts for the poor control obtained when mol-luscicides are applied to the soil surface.