It has been a slow Tuesday for grain and soy futures markets with corn and soy prices unable to hang on to yesterday's gains. Much of the market's chatter has concerned the spreading avian flu problem in the Midwest. General Comments It has been a slow Tuesday for grain and soy futures markets with corn and soy prices unable to hang on to yesterday's gains. Much of the market's chatter has concerned the spreading avian flu problem in the Midwest. A large layer operation in Iowa discovered it in portions of its 5.3 million bird flock. At last report, about 3.8 million of its chickens were being killed. This is the largest single outbreak reported so far, but there have been instances reported in turkey and chicken populations from Arkansas...