Twin-Row Corn Production: An Evaluation in the Mid-Atlantic Delmarva Region
2005
Kratochvil, Robert J. | Taylor, Richard W.
Corn (Zea maize L.) produced in twin rows (two rows 7.5 inches apart on 30-inch centers) was compared to corn produced in rows spaced 30 inches apart over a range of plant populations at three Maryland locations and one Delaware location during 2003 and 2004. Grain yield averaged over the hybrids and populations differed between the two row spacing treatments at only one of the four locations and in that instance yield was greater in 30-inch rows. Corn produced in twin rows did not produce significantly better yields as plant population increased from 24,000 to 32,000 plants per acre. Only one of twenty-eight hybrid by row spacing combinations evaluated across the four locations had a significant linear response to population for yield. Yield response to population for both row spacing treatments varied across locations and hybrids. Greater levels of lodging occurred as population increased for twin-row corn. A greater incidence of stalk rot was also observed in twin-row corn. These results did nothing to indicate that planting corn in twin rows instead of the conventional 30-inch rows in the Delmarva region would be a beneficial management practice change.
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