Higher input prices and lower commodity prices have farmers asking, "What inputs can I cut back on to reduce my cost of production and not greatly reduce my yield?"
This is a difficult question to address broadly, but I will try and highlight some key points. First, I strongly suggest you look at an Enterprise Budget for corn and determine your costs. There are a number of excellent corn enterprise budgets out there online; search your favorite state's Extension site for one. The Penn State Agronomy Guide has budgets for corn silage, corn after corn and corn after soybeans.
Top costs for corn for grain include land rent, fertilizer, seed, machinery depreciation, and pesticides. Obviously, lowering land rent would be nice, but if not possible, savings will likely come from machinery depreciation, fertilizer, fuel/drying costs, and pesticides.
Be Careful Cutting Seed Costs