Egypt's prime minister will issue a decree on Wednesday instructing the country's agricultural quarantine authorities to allow wheat imports with up to 0.05 percent levels of ergot fungus.

"The decree has been promised to be sent tomorrow, it will trump the previous ministerial decree which had dictated a zero tolerance policy," Eid Hawash, spokesman for the agriculture ministry, told Reuters.

The prime minister had said in a statement earlier on Tuesday that he had instructed the government to authorise imports of wheat with up to 0.05 percent levels of the fungus.

"During the meeting where he made these comments, the prime minister said he would issue a decree as we need a new decree for the quarantine authority to change its policy," Hawash said.