Wheat is rising for the 10th time in 11 days on concern that unseasonably dry weather in the Southern Plains of the U.S. will harm the crop.
The price of wheat for delivery in July rose 10 cents, or 1.4 percent, to $7.39 a bushel Tuesday.
Wheat prices have jumped, climbing 9 percent, in the past three weeks as the Southern Plains region has been hit with dry weather at a critical time of development for the crop.
Corn also rose, while soybeans edged lower.
Most metals rose.
Silver, copper, platinum and palladium all gained. Gold edged lower.
In energy trading, oil was little changed at $99.40 a barrel.