(worker’s compensation case; employee not an agricultural employee at time injury sustained and, thus, entitled to worker’s compensation benefits; plaintiff owned and operated 685-acre farm and defendant repaired and maintained farm machinery and equipment, operated ground-planting and harvesting equipment, sorted and loaded hogs and supervised farming operations in plaintiff’s absence; plaintiff injured while assisting a welder on the farm; court noted that employees can be employed in a dual capacity, but plaintiff not working as farm employee at time of injury as defined by Ind. Code §22-3-2-9(a)).