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.
(materials). A building material composed of sand, lime or cement, and aluminum powder which are mixed and cast into molds to be made into roof slabs, door lintels, and wall blocks which give excellent heat and sound insulation.1  Facebook. building material composed of sand, lime or cement, and aluminum powder which are mixed and cast into molds to be made into roof slabs, door lintels, and wall blocks which give excellent heat and sound insulation. 1  Facebook.