premise: In 2006, poppy cultivation in Afghanistan reached a record 165, 000 hectares, up 59 percent from last year, according to a report by the UN Office on Drugs and Crime issued in September.
  Opium production reached 6,100 tons, witnessing a 49 percent rise over 2005 and accounting for 92 percent of the world's total supply, the report said.
  The Afghan government has been severely criticized by the international community, especially Western countries for its failure to curb the booming opium industry.
  Azam said "Ground chemical spraying would be the last option if all other options do not work. But no decision of using chemical spraying has been made."
   What is caused by the Afghan governments failure to curb the booming opium industry?
hypothesis: Opium production reached 6,100 tons