<P> The main player in the country's drug market is the United Wa State Army, ethnic fighters who control areas along the country's eastern border with Thailand, part of the infamous Golden Triangle . The UWSA, an ally of Myanmar's ruling military junta, was once the militant arm of the Beijing - backed Burmese Communist Party . </P> <P> Poppy cultivation in the country decreased more than 80 percent from 1998 to 2006 following an eradication campaign in the Golden Triangle . Officials with the United Nations Office of Drugs and Crime say opium poppy farming is now expanding . The number of hectares used to grow the crops increased 29% in 2007 . A United Nations report cites corruption, poverty and a lack of government control as causes for the jump . </P> <P> Opium and heroin base produced in northeastern Myanmar are transported by horse and donkey caravans to refineries along the Thailand--Burma border for conversion to heroin and heroin base . Most of the finished products are shipped across the border into various towns in North Thailand and down to Bangkok for further distribution to international markets . </P> <P> In the past major Thai Chinese and Burmese Chinese traffickers in Bangkok have controlled much of the foreign sales and movement of Southeast Asian heroin from Thailand, but a combination of law enforcement pressure, publicity and a regional drought has significantly reduced their role . As a consequence, many less - predominant traffickers in Bangkok and other parts of Thailand now control smaller quantities of the heroin going to international markets . </P>

What is the main agricultural product of the golden triangle