July is crop dusting (or spraying) time in Iowa. Here in Amana, the grass strip airfield hosts a couple of sprayers from various parts of the country. Pilots and planes are rented by farmers to deliver bug management applications on grain crops in these latitudes. Then the pilots move on to other jobs in the area or region. The pilot's skills are airshow worthy, dangerous and fun to watch. On this particular occasion the pilot tested some fix to his plane before filling up with spray and flying to the job. Know that.