Corn futures are trading lower at midday. Harvest activity should increase this week although more rain is in the forecast although mostly dry weather is expected in the western Corn Belt through Thursday. Spillover weakness from soybeans is also weighing on the market. December is 1 cent lower at $2.54 1/4 and March is 1 cent lower at $2.67 1/2.

Soybean futures are lower at midsession. Seasonal harvest pressure is expected to increase this week as some open weather is forecast before another rain system moves through the Midwest later in the week. Early harvest reports of strong yields and weakness in outside markets are also bearish factors. November is 6 1/2 cents lower at $5.42 3/4 and January is 6 1/4 cents lower at $5.56.

Wheat futures are trading lower at midday. Follow-through selling from Friday's weakness and spillover from corn and soybeans are weighing on futures. Beneficial rain in the Plains is also a bearish factor. Losses are being limited by the bullish global supply/demand fundamentals. CBOT Dec is 3 1/2 cents lower at $4.15 1/2, KCBT Dec is 7 1/2 cents lower at $4.74, and MGE Dec is 6 cents lower at $4.55.

Cattle futures are trading mixed at midsession. Front-end contracts are being supported by better than expected cash trade late on Friday and a slightly supportive August marketings number in Friday's Cattle on Feed report. Deferreds are being pressured by August placements and on feed numbers coming in above trade expectations. October is 48 cents higher at $90.58 and December is 30 cents higher at $90.10.

Lean hog futures are trading mixed at midday. Support is coming from short-covering, futures discount to the lean hog index, and technically oversold conditions. However, buying interest is being limited by the poor cash fundamentals as hog numbers and pork supplies remain ample. October is 5 cents higher at $62.70 and December is 20 cents higher at $60.50.