USAID offering seeds , other help to encourage Afghan farmers to grow wheat . Agency trying to wean Afghan farmers from poppy production . Comment: Opium A farmer harvests wheat in a field on the outskirts of Kabul , Afghanistan , last summer . , heroin has been a major source of revenue for the Taliban .
USAID offering seeds , other help to encourage Afghan farmers to grow wheat . Agency trying to wean Afghan farmers from poppy production . Comment: Opium , heroin has been a major source of revenue for the Taliban .