The effect of common lambsquarters (Chenopodium albumL. #3CHEAL) density on spring barley (Hordeum vulgareL. ‘Lidal’) was studied in a 2-yr field experiment near Fairbanks, AK. The data were fit to a rectangular hyperbola model. Common lambsquarters densities explained 74 to 75% of the variability in barley yield. The maximum yield loss attributable to common lambsquarters was 23% in 1982 and 36% in 1983.
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Conn et al. (1987) studied this question.
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