GOLDEN CRESCENT

The Golden Crescent is the name given to one of Asia's two principal areas of illicit opium production (with the other being the Golden Triangle), located at the crossroads of Central, South, and Western Asia. 

This space overlaps three nations, Afghanistan, Iran, and Pakistan, whose mountainous peripheries define the crescent.

The United Nations Office on Drugs and Crime (UNODC) heroin production estimates for the past 10 years show significant changes in the primary source areas. 

Heroin production in Southeast Asia declined dramatically, while heroin production in Southwest Asia expanded.

In 1991, Afghanistan became the world's primary opium producer, with a yield of 1,782 metric tons (U.S. State Department estimates), surpassing Myanmar, formerly the world leader in opium production. 

The decrease in heroin production from Myanmar is the result of several years of unfavorable growing conditions and new government policies of forced eradication.

Afghan heroin production increased during the same time frame, with a notable decrease in 2001 allegedly as a result of the Taliban's fatwa against heroin production.

Afghanistan now produces over 90% of the world's non-pharmaceutical-grade opium. 

In addition to opiates, Afghanistan is also the world's largest producer of hashish

FACTS :- 

Presently afghanistan is world's largest Opium producer ( also Hashish OR Ganja producer ) 

Myanmar is second largest producer of opium .

In india , Madhya pradesh is largest opium Producer