White grubs, a general name. Ascerno. Figure 1. Grub. Identification: White grubs is a general name for the grub (larval) stage of beetles in the family Scarabaeidae, order Coleoptera (beetles) that feed on the roots of turf (Figure 1) .amage, scouting, and management: Larvae feed on the roots of turf grasses and adults feed on roses, phlox, and petunias, although they are active at night and more cryptic compared to Japanese beetle. A good pheromone trap is available.
Parent material is the underlying geological material (generally bedrock or a superficial or drift deposit) in which soil horizons form.cean deposited parent materials, called marine sediments, are collections of material that have been carried by rivers and streams to the ocean and eventually sink to the bottom.
Particleboard is the standard or basic product, the practice has developed that the special products (MR and. Flooring) are the ones specifically identified by name printed on the sheet or by colour code. The binder system used for Standard Particleboard is urea formaldehyde. Paraffin wax is added to the surface.