Julio Rinco operates a harvesting machine in a coffee plantation in the town of Sao Joao da Boa Vista, Brazil, June 6, 2019. REUTERS/Amanda Perobelli/Files
Coffee cherries are seen in a plantation in the town of Sao Joao da Boa Vista, Brazil June 6, 2019. REUTERS/Amanda Perobelli/Files
Roasted coffee beans are seen at the coffee company of Simexco Dak Lak Limited in the town of Di An in Binh Duong province, Vietnam July 8, 2019. REUTERS/Yen Duong/Files
A weather station is seen as workers enter a coffee plantation in Sao Sebastiao do Paraiso, Brazil April 22, 2019. REUTERS/Amanda Perobelli/Files
Colombian coffee grower Jose Eliecer Sierra picks coffee fruits at a plantation in Pueblorrico, Colombia March 11, 2019. REUTERS/Luisa Gonzalez/Files
A worker picks coffee fruits at a plantation in Pueblorrico, Colombia March 11, 2019. REUTERS/Luisa Gonzalez/Files
Recently harvested coffee fruits are seen at a plantation in Pueblorrico, Colombia March 11, 2019. REUTERS/Luisa Gonzalez/Files
A farmer shows an irrigation management system app on his mobile phone at a coffee plantation in Sao Sebastiao do Paraiso, Brazil April 22, 2019. REUTERS/Amanda Perobelli/Files
Recently harvested coffee fruits are seen at a plantation in Pueblorrico, Colombia March 11, 2019. REUTERS/Luisa Gonzalez/Files
Thai Anh Tuan (L) a manager of Simexco Dak Lak Limited coffee company tastes coffee at his office in the town of Di An in Binh Duong province, Vietnam July 8, 2019. REUTERS/Yen Duong/Files
A worker shows coffee green beans at coffee company Simexco Dak Lak Limited in the town of Di An in Binh Duong province, Vietnam July 8, 2019. REUTERS/Yen Duong/Files
A worker is seen at a coffee warehouse of the coffee company Simexco Dak Lak Limited in the town of Di An in Binh Duong province, Vietnam July 8, 2019. REUTERS/Yen Duong/Files
Labourers work at a coffee warehouse of coffee company of Simexco Dak Lak Limited in the town of Di An in Binh Duong province, Vietnam July 8, 2019. REUTERS/Yen Duong/Files
A harvesting machine harvests coffee in a plantation in the town of Sao Joao da Boa Vista, Brazil June 6, 2019. REUTERS/Amanda Perobelli/Files
Coffee is being tasted at Simexco Dak Lak Limited coffee company in the town of Di An in Binh Duong province, Vietnam July 8, 2019. REUTERS/Yen Duong/Files