Trade fears roil market

US grain and vegetable oil markets were rattled by the looming possibility of a trade war with China.  Soybean prices tumbled to lows not seen since March of 2009, trading as low as $8.41½ before finding support and climbing back to close at $8.89 per bushel, which was still a significant 19.5 cent per bushel decline on the day. Soybean oil prices traded down to 27.79 cents per pound, a low not seen since November of…