This survey will: 1) complete the fifth set of weed surveys in Saskatchewan since the series of provincial surveys began in the mid-1970s, 2) measure the species compositions and population densities of the weed communities in the major summer annual crops and identify changes in weed communities that have occurred since previous surveys, 3) document abundance and distribution of resistant weed species, 4) document agronomic and weed control practices used on surveyed fields and relate to floristic composition of weed communities.