CHICAGO: Chicago corn futures dropped on Monday, as rainfall strengthened crop conditions during a crucial stage in development.

Soyabean futures gained for a fifth consecutive session on renewed Chinese demand and support from the soyabean oil market. Wheat, meanwhile, sank as harvest across the US Great Plains continued and a strengthening dollar diminished export potential.

The most active corn futures on the Chicago Board of Trade fell 5 cents to $3.28 per bushel as of 10:30 a.m. (1530 GMT). CBOT soyabeans gained 6-1/2 cents to $9.04-1/2 a bushel, while CBOT wheat fell 14 cents to $5.20-3/4.

Corn crop prospects across the Midwest improved after much-needed rains eased concerns that dryness could damage the crops during the crucial pollination stage. The US Department of Agriculture is set to update its crop condition ratings in a weekly report later on Monday.

"We've gone 180 (degrees) from what we thought could be a terrible weather event to now a crop that's pretty much made," said Terry Reilly, senior agriculture futures analyst at Futures International.

Last week corn exports to China supported the market, with hopes that Beijing will fulfil its agreement to import $36.5 billion in US agricultural goods in the first year of its Phase 1 trade deal.

"I expect that to continue, if they're going to hit those Phase 1 targets," said Dan Hussey, senior market strategist at Zaner Group.

Soyabean futures continue to climb as China booked 132,000 tonnes of US soyabeans, according to the US Agriculture Department on Monday.

That is on top of confirmed sales last week of 1.5 million tonnes of US soyabeans, including about 1 million tonnes to China.

"Knowing that Brazil is pretty much tapped out in their export potential, it really does open the door for China to turn their eyes toward a very cheap soyabean crop here in the United States," said Hussey.