Soybeans and cattle plummeted on tariff news to end the week.Soybeans closed 28 to 34 cents lower on Friday, while live cattle were down over $6 and feeder cattle were down as much as $8.25.David Ericson with Ag Optimus recaps today's trade.Topics:Tough two days for soybeansCorn somewhat insulatedMeats could not hold outPreview WASDE and next week