Currently the most common row spacing is 30 in. However, some growers have recently switched to narrow rows (15-, 20- or 22-in.-row spacing) or twin rows to accommodate the increasing plant populations of today’s higher-yielding hybrids. Blunier’s advice? “Look at your planting population over the last five years and project what populations will be in three years. If you predict that your average populations will increase to where plant spacing is within 4 in. of each other, which is 36,000 plants/acre in 30-in. rows, while you own the new planter, take a serious look at a row-spacing change.”