One Colombian study estimated that to effectively kill 1ha of coca by aerial spraying, you must spray 32. Another calculated

One Colombian study estimated that to effectively kill 1ha of coca by aerial spraying, you must spray 32. Another calculated the cost of doing that at $57,000 — a high price to pay to destroy a patch of coca not much bigger than a football pitch.
ft.com/content/03b032… https://t.co/hkWHZD8E8C

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