An injunction barring the government from opening the floodgates in the Isahaya Bay dike has been upheld, further delaying a plan to examine whether the land reclamation project is hurting local fishing.

The Nagasaki District Court on Tuesday rejected the central government's objection to the injunction, while local farmers sought to keep the sluice gates closed amid fears seawater could damage their produce.

The Agriculture, Forestry and Fisheries Ministry, which oversees the project, immediately appealed the decision to the Fukuoka High Court.