For the second time, Egypt has rejected a vessel carrying Canadian wheat because Egyptian officials found trace levels of the fungus ergot, but would not say the percentage found. Reuters reports the move by the quarantine authority is the latest in a series of rejections, which have caused serious concerns over Egypt’s tough new quality rules and disrupted the country’s massive wheat imports. Egypt is the world’s largest wheat importer and is facing difficulties purchasing the grain in its import tenders since the first shipment rejection. Suppliers have refrained from making offers or added risk premiums to prices. Egypt’s supply ministry says the country would allow a 0.05 percent level of ergot, but the agricultural quarantine authority has insisted on a zero tolerance policy.