the rows that will be used to pollinate the detasseled rows. Panels are also commonly planted in a 4:1 ratio, with four female rows followed by a single male row. Other, less common, patterns are also used, including 4:2 and 4:1:6:1. In all cases, the pattern is continued throughout the corn field. All or portions of seed corn fields may be surrounded by extra rows of male plants if it is likely that wind may carry foreign pollen into the seed corn field. These extra rows are called "buffer" or "isolation" rows, depending on the area of the country. Another important aspect to keeping undesirable pollen out of seed corn fields is a process known as roguing, a process that removes plants that differ from the variety intentionally planted. References Hybridisation (biology) Child labour Maize