RE: planting corn
Basically the same prep with the equipment you have. I have broadcast corn with a fertilizer spreader and had pretty good results. After speading, just disk(or till very lightly)lightly in the soil less than 2" deep. +1 about roundup ready beans/corn. Well worth the extra costs. Ph around 6.5, fertilize with 10/10/10 at planting. Come back with more nitrogen for corn when its a couple feet high.