The edge of the swath is where the uniform distribution of pellets rapidly tails off to a few scattered pellets. On the next flight path, the aircraft will lay down another swath. As before, once the pellets stop bouncing, walk across to the new outside edge and mark it with a second piece of flagging tape. This distance is shown on Figure 3. Figure 3 .
Fertilization overlap after two swaths.
Measure the horizontal distance between the two pieces of tape. Repeat this process for six consecutive flight lines to get five horizontal distance measurements. This procedure should be repeated until six consecutive edges have been identified and five consecutive horizontal distances measured. Then another location in the block should be chosen and a second sequence of six consecutive edges identified and five consecutive horizontal distances measured. Average the overlap from the measurements.