This paper estimates the return on investment in the skeleton weed management program in Western Australia. A bioeconomic model is used to estimate costs to broadacre cropping industries over time with and without the program. Results suggest that without the program annual crop yield losses and increased growing costs, expressed in Australian dollars ($A), could reach A$13.6 million after 30 years. With the program, these losses reduce to A$5.0 million. If annual skeleton weed program costs remain approximately A$3.4 million, the program is likely to produce an annual net benefit to grain producers of A$8.6 million after 30 years.

中文翻译：

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西澳大利亚骨架杂草（Chondrilla juncea）管理的效益成本分析

本文估计了西澳大利亚杂草管理计划的投资回报。使用生物经济模型来估算有和没有该计划的大田种植业随时间推移的成本。结果表明，如果没有该计划，以澳元 ($A) 表示的年作物产量损失和增加的种植成本可能在 30 年后达到 1360 万澳元。通过该计划，这些损失减少到 500 万澳元。如果每年除草计划的成本保持在大约 340 万澳元，该计划很可能在 30 年后为谷物生产者带来 860 万澳元的年度净收益。