Kochia (Kochia scoparia) and green foxtail (Setaria viridis) interference in sugarbeets (Beta vulgaris).

摘要: Two field experiments were conducted between 1990 and 1992 under sprinkler irrigation at the Research Extension Center, Torrington, WY to determine influence of mixed densities durations kochia green foxtail interference in sugarbeet. Sugarbeet root yield top weight generally decreased as increased whether alone or combination. Reductions sugarbeet above ground biomass from additive low intermediate density but less than high either species. duration after emergence a increased. Since plants irrigated avoid water stress adequate nutrients applied, it appears that interfered with primarily for light, based on light height measurements. Season-long well did not show any significant effect sucrose content. Based regression analysis lowest required reduce approximately 0.3 0.06 plants/m row, respectively. The minimum time 0.5 3.0 row can interfere sugarbeets before is economically reduced was 3.5 wk emergence.