Nationwide fuel shortages are beginning to put pressure on Russia’s agricultural sector, despite directives from President Vladimir Putin to guarantee farmers enough supplies for the harvest and planting seasons, Agriculture Minister Oksana Lut said Friday.

“There are rough patches on the ground, and we’ll work through them with each specific region and business as needed,” Lut said at a farming forum in Siberia.

She cited a directive issued by Putin last month ordering a strict fuel delivery schedule for farms to counter the impact of Ukrainian strikes on oil refineries. Despite the current bottlenecks, Lut expressed confidence that these deliveries would ultimately be completed in full.

Her comments also come as Ukrainian attacks on shipping vessels have forced Russia, the world’s leading grain exporter, to restrict shipping in the Sea of Azov. The route, which remained restricted as of Thursday, typically handles about a quarter of Russia’s grain exports, industry sources told Reuters.

These reciprocal strikes on cargo vessels in the Black Sea and the Sea of Azov drove up global wheat prices this week.