For example, no hunting could occur on or over a field of sweet corn that has been partially harvested and the remainder manipulated. To be considered normal, an agricultural planting, agricultural harvesting, and agricultural post-harvest manipulation must be conducted in accordance with official recommendations of USDA State Extension Specialists. However, the Service will continue to make final determinations about whether official recommendations were followed.
Dos Gris
Leaving a crop in the field to rot or to attact ducks is not in accordance with official recommendations of USDA State Extension Specialists. The remaining crop that was not harvested will have to be exsplained otherwise a field not fully harvested is Manipulated. That is how my hunting partner and his friend lost their case and how I come to the inclusive Manipulation part.