The study looked at how different ways of preparing the soil and previous plants grown can affect the profit and production of wheat crops. They found that using certain tillage methods like paraplow and rotary harrow can lead to higher profits and yields. Wheat grown after soybeans tended to be more profitable and produce higher yields compared to wheat grown after wheat. Overall, using unconventional tillage methods like paraplow and rotary harrow can be beneficial for wheat crops, with chisel as an alternative option.