CHINA AVOIDS US SOYChina, the world's biggest buyer of soybeans, has yet to purchase any U.S. soybean cargoes from its autumn harvest, traders have said. "These deals were done last night after Argentina's decision on export tax," said one of the traders, declining to be identified as they were not authorised to speak with media. On Friday, Chinese President Xi Jinping and U.S. President Donald Trump held a phone call but neither side reported any update on agriculture, further squeezing Chicago soybean futures already near five-year lows. [GRA/]After Argentina scrapped its export tax, Chicago soybean futures set a six-week low on Tuesday. By that time in previous years, traders said, China would have bought 12-13 million tons from the U.S. for September-November shipment.