BUENOS AIRES, ARGENTINA — Surprise strikes by grain port workers in Argentina to protest stalled wage talks have delayed shipments, Reuters reported.

A spokesman for the URGARA union, which represents inspectors who check grain quality before ships are loaded, said the surprise halts will continue as necessary.

Talks over salaries have been going on for several months. Strikes were launched after expiration of a deadline to negotiate between the union and the exporting companies, Reuters said.

The protests impacted the agro-export area of Rosario and Bahía Blanca.

The conflict comes as a major oilseed union has separately been threatening strike action over pandemic payments, currently under mediation by the government.

Argentina is the world's top exporter of processed soy meal and soy oil, and one of the largest sellers of raw soybeans.