在灌溉失败或不足的赫尔曼德、Uruzgan和坎大哈 — — 五大鸦片生产大省中的三个 — — 负债累累的农民受到经济利益的诱惑；鸦片带来的收入是种植小麦的八倍，并且用水更少。
Irrigation has failed or is inadequate in Helmand, Uruzgan, and Kandahar – three of the top five opium-producing provinces – where indebted farmers are hooked by the economics: opium brings in eight times as much cash as wheat and uses less water.