Cereal leaf beetle in 33.3% of fields in southern Alberta. Locally, adults spread to the exterior of fields during their overwinter. Larvae tend to stay on the outside of crop fields, but are also found in the center. Local populations are never homogenously distributed, hotspots and empty places occur in each field. "O. melanopus" consumes nearly all cereal crops, but has a strong affinity for oats, barley, and rye, and its favorite host is wheat. Alternatives are corn, sorghum, and sudangrass for adults, and wild oats, quackgrass, timothy, canary grass, reed canary grass, annual and perennial ryegrass, foxtail, orchard grass, wild rye, smooth
Cereal growth staging scales Cereal growth staging scales Cereal growth staging scales attempt to objectively measure the growth of cereals. In agronomy, the "BBCH-scale for cereals"' describes the phenological development of cereals using the BBCH-scale. The phenological growth stages and BBCH-identification keys of cereals are: with stages 21 The Feekes scale is a system to identify the growth and development of cereal crops introduced by the Dutch agronomists Willem Feekes (1907-1979) in 1941. This scale is more widely used in the United States than other similar and more descriptive scales such as the Zadoks scale or the BBCH scale. Like other scales of crop