U.S. corn yield forecast at record level.

U.S.-China trade war hits soybean market.

Dry conditions in Russia, Europe affecting market.

Prices firm again with strong international demand.

Crop uncertainty bullish for corn.

Drought in Argentina affecting market.

Weather concerns in United States and Europe have created nervousness in well-supplied market.

Prices around the world mostly higher to start 2018.

Bearish fundamentals keep corn downtrend in place.