Bulb mites (Spinach
crown mites)—Rhizoglyphus spp.
Bulb mites are shiny, creamy white, bulbous mites that range in size from 0.5 to 1 mm long. They have
four pairs of short brown legs and look like tiny pearls with legs. They generally occur in clusters.
Bulb mites penetrate the developing leaves and distort the growth.
Rapid crop rotation fosters the survival of mites on leftover vegetation. After harvest, clear all vegetation
to allow organic matter to decompose; this reduces populations of the mite. Flood irrigation or heavy
rains during the winter may reduce mite levels in the soil.