Corn futures have turned lower as of midday after a firm open. Weakness in the dollar is a supportive factor, but gains were unable to hold amid favorable weather for the crop. The mild temperatures should help corn that is now pollinating. Forecasts call for more mild temperatures and chances of rain over the next week or two. Crop condition ratings due out this afternoon are expected to show improvement. September is 2 3/4 cents lower at $3.19 1/2 and December is 1 1/2 cents lower at $3.30.

Soybean futures are trading lower at midsession except for the nearby August and September contracts. Weakness in the dollar has helped the front end rally following last week's weakness. However, deferreds are lower amid generally favorable growing conditions for the crop despite some concern about the lack of heating units for the late planted crop in the eastern Midwest. August is 15 1/2 cents higher at $10.25 while November is 3 cents lower at $9.20 1/2.

Wheat futures are narrowly mixed at midday. Initial market strength led to profit-taking in wheat as well as other commodities. Weakness in the dollar and improved weekly export shipments of 19 million bushels, nearly double the previous week, was supportive. Harvest weather is generally satisfactory in the Plains and Midwest while good crop weather is being reported for most of the northern Plains spring wheat region. CBOT Sep is 1 3/4 cents lower at $5.40, KCBT Sep is 2 cents higher at $5.68 1/2 and MGE Sep is 3/4 of a cent higher at $6.17.

Cattle futures are trading lower at midsession. After opening higher and August hitting a new six-month high, futures have turned lower on profit-taking amid technically overbought conditions. Cash cattle traded $2 higher late last week in the southern Plains. However, struggling beef prices and poor packer margins are bearish market factors. August is 45 cents lower at $85.93 and October is 70 cents lower at $91.25.

Lean hog futures are lower at midday. Initial strength was driven by support from the $1.71 jump in pork cutouts on Friday and the outlook for tightening hog numbers. However, the market slipped on profit-taking from recent gains once other commodities also slipped from their highs. August is 18 cents lower at $64.50 and October is 25 cents lower at $60.30.