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Sugar beet yield loss predicted by relative weed cover, weed biomass and weed density

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Figure

Table 1. The number of emerged sugar beets (number/ha) in all experiments
Table 3. Average sugar beet yield (t/ha) and white sugar yield (t/ha) of the weed-free control at all experimental locations
Table 4. Regression parameters calculated for the two-parameter model of relative (A) sugar beet yield loss–weed density interaction modified according to Cousens (1985), (B) sugar beet yield loss-relative weed cover interaction according to Kropff and Spitters (1991), and (C) sugar beet yield loss-weed biomass interaction modified according to Cousens (1985)
Figure 2. Relation of the relative yield loss of sugar beet to relative weed cover in all experimental locations and years IHO – Ihinger Hof, Germany; DOK – Lipetsk region, Russia
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