The government of the Islamic extremist Taliban, overthrown in a U.S.-led war last fall, had successfully banned poppy cultivation in 2000, eliminating an estimated 96 percent of the 2001 crop.

Myanmar is now the world’s largest producer of opium, according to a United Nations report published Tuesday, overtaking Afghanistan as political turmoil drives more people to poppy farming amid ...

After the group retook power in the country in 2021, it banned poppy cultivation. Now it's tearing the plants out, field by field. But farmers and workers worry there's no money in other crops.

A version of this article appears in print on July 8, 2019, Section A, Page 4 of the New York edition with the headline: As Opium Prices Crater, Mexican Poppy Farmers Migrate to Earn Money.