US corn and soy fell over 3 percent in post-holiday trade early on Tuesday, as a $4 plunge in oil prices pushed the dollar to 2008 highs, triggering a broad sell-off in commodities. Favourable weather conditions late last week in the US Midwest also pressured overall grain markets.
At the Chicago Board of Trade, September corn futures fell 3.1 percent a bushel and March soybean contract fell 3.0 percent to $13.13 a bushel. US markets were closed on Monday for Labour Day.