GRAINS-Chicago wheat climbs over 1 pct on U.S. dryness, weaker dollar

SINGAPORE, March 20 (Reuters) - Chicago wheat hit its highest in a week on Monday, buoyed by a weaker dollar and concerns over a lack of moisture for the U.S. winter crop. Corn and soybean prices rose in early Asian trade, although gains were limited by bumper South American supplies. FUNDAMENTALS * Dry weather for hard red winter wheat growing regions in the United States is supporting wheat prices with forecast rains later this week unlikely to provide much moisture, analy