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- W2151759895 abstract "A field study was conducted at two sites in southwestern Ontario, Canada, from 2002 to 2005 to assess the cumulative effects of different weed management strategies applied to the same plots over time in a corn–soybean rotation. These strategies included a POST broad-spectrum herbicide applied at recommended or reduced rates and use of a computer decision aid to select the POST herbicide having the greatest net return (economic threshold approach) based on weed populations before treatment or seed-bank estimates. Four years after study initiation, increased weed populations were observed only in the nontreated control. The reduced rate and economic threshold approaches did not lead to increased weed seed banks compared with the recommended rate of a broad-spectrum herbicide. Reductions in herbicide rate were more effective than the use of economic thresholds for reducing the risk of environmental impact in corn and soybeans. Weed populations in this study were generally above threshold levels, and herbicides selected by the computer decision aid tended to be older, less-expensive herbicides with high use rates. Recommendations by the computer decision aid were generally more effective and more profitable when based on weed populations before treatment than when based on seed-bank estimates.Nomenclature: Corn, Zea mays L, soybean, Glycine max (L.) Merr" @default.
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- W2151759895 date "2007-07-01" @default.
- W2151759895 modified "2023-09-27" @default.
- W2151759895 title "A Comparison of Reduced Rate and Economic Threshold Approaches to Weed Management in a Corn–Soybean Rotation" @default.
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- W2151759895 doi "https://doi.org/10.1614/wt-06-135.1" @default.
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