China's agriculture ministry said it was lowering its forecast for corn consumption in the 2019/20 crop year amid outbreaks of African swine fever across the country.
The ministry said corn consumption was now seen 2 million tons lower than last month's forecast at 280 million tons because a huge fall in the pig herd was reducing demand for feed. African swine fever is fatal to pigs, though it doesn't harm humans.
China has said its sow herd declined by a record 23.9% in May from a year earlier, but some estimate the number to be twice that level.
While demand will be lower, the country also planted less corn, the ministry said in its monthly crops report, thanks to a greater-than-expected shift in the type of crops being grown.
Beijing is encouraging less planting of corn in some areas in the far north and higher output of soybeans instead. This trend cut the estimated size of the corn crop by 920,000 tons to 253 million tons.
The ministry also said that southwestern Yunnan province continued to suffer from drought, and that both the sugar cane crop there and the sugar beet crop in Inner Mongolia were suffering from pests.
It did not change its forecast on sugar production, but said it would continue to monitor the impact of adverse weather and pests.