Corn and wheat rise, soybeans retreat as traders eye US-China talks

• Grain traders have focused on US Midwest corn and soy harvest weather as farmers have struggled to gather developing crops.
• CBOT December wheat was up 2 cents at $5.18 a bushel but down more than 2pc in the week.
• CBOT November soybeans fell 6 cents to $9.27-1/4 a bushel.

Soybeans slumped to a two-week low on an accelerating harvest and as Chinese purchases of US shipments have not lived up to trade expectations after Beijing offered crushers a quota of duty-free imports early this week.All three markets were on pace for weekly declines.

Grain traders have focused on US Midwest corn and soy harvest weather as farmers have struggled to gather developing crops.

Storms are expected to chase farmers from fields in the eastern Corn Belt this weekend ahead of a drier weather pattern.

The market has also remained cautious this week with US and Chinese negotiators working to nail down a phase one trade agreement ahead of an expected meeting next month between presidents Xi Jinping and Donald Trump at a summit in Chile.

Trade officials from both countries are "close to finalizing" some parts of an agreement after high-level telephone discussions on Friday, the US Trade Representative's office said. Accelerated US agricultural product purchases are among measures being discussed.

"Based on comments from both the US and China, we're going to have the beginnings of a deal at the APEC conference," said Jim Gerlach, president of A/C Trading.

"Demand is what's been holding the market down so whenever you get good news on demand it takes a lot of pressure off the market."

Chicago Board of Trade (CBOT) December corn futures were up 1-1/2 cents at $3.88-1/4 a bushel at 12:19 p.m. CDT (1719 GMT), but still on pace for a second straight weekly decline.

CBOT December wheat was up 2 cents at $5.18 a bushel but down more than 2pc in the week, which would be its first weekly drop in two months.

CBOT November soybeans fell 6 cents to $9.27-1/4 a bushel, the lowest since Oct. 11. Soybeans were positioned for their second straight weekly drop after hitting a four-month high at mid-month.

Argentina's presidential election on Sunday is being monitored to see if it changes export tax policy in the major wheat, corn and soybean supplier in the midst of an economic crisis.