Turfgrass consists of a complex of parts including the leaves, stems and roots of the grass plant, and a composite layer of plant debris, roots and stolons generally referred to as thatch. The organisms inhabiting this environment are diverse and include a number of plant-feeding invertebrate pests such as chinch bugs (Blisslfs spp.), sod webworms (Crambus spp.), scarabaied grubs, mites and others, which can cause economic damage through their feeding activity (Vance and App 1971). Most of these pests are well known and their biology and control are being constantly investigated.
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H. T. Streu (1973) studied this question.