Early methods of weed control included mowing, flooding, cultivating, smothering, burning, and crop rotation. Though these methods are still important, other means are perhaps more typical today, particularly the use of herbicide (plant-killing) chemicals. Another technique is to introduce insects that attack only the unwanted plant and destroy it while leaving the crop plants unharmed.
The scale of the investment required may be determined from comprehensive data on farm mechanization costs (see also, Expenditures and Returns). For instance, the current cost of mechanization in the UK is about 20 % of total farm input costs (Table 1). Table 1. Breakdown of farm input costs (UK inputs) (see also, Expenditures and Returns).

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Early methods of weed control included mowing, flooding, cultivating, smothering, burning, and crop rotation. Though these methods are still important, other means are perhaps more typical today, particularly the use of herbicide (plant-killing) chemicals. Another technique is to introduce insects that attack only the unwanted plant and destroy it while leaving the crop plants unharmed.
The scale of the investment required may be determined from comprehensive data on farm mechanization costs (see also, Expenditures and Returns). For instance, the current cost of mechanization in the UK is about 20 % of total farm input costs (Table 1). Table 1. Breakdown of farm input costs (UK inputs) (see also, Expenditures and Returns).

Source 1 | Source 2 | Source 3

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