Twin- and Single-Row Corn Production in Northeast Missouri
2009
Nelson, Kelly A. | Smoot, Randall L.
Producers may consider adopting narrow-row corn (Zea mays L.) due to potential yield advantages; however, variable yield benefits, risk, and costs may limit adoption. Twin-row corn planted in two 7.5-inch spaced rows on 30-inch centers allows farmers to utilize existing harvest equipment. Research was conducted on claypan soils to evaluate the effect of twin-row corn compared to narrow- (≤ 22.5-inch) and 30-inch single-row corn in separate small-plot conventional, no-till, and large-plot no-till trials in Northeast Missouri. This research determined the effect of (i) row spacing on intercepted photosynthetically active radiation (IPAR) and grain yield, and (ii) twin-row plant arrangement and population compared with single rows on grain yield. There was no grain yield increase with narrow-row compared with twin- or single-row corn. Recommendations for plant populations in narrow-, twin-, and singe-row spacings were similar since there was no interaction between row spacing and plant population for the hybrids in this research. Twin- and 30-inch single-row corn grain yield and IPAR was similar regardless of twin-row corn plant placement in all trials except in large-plot, no-till research with a natural European corn borer (Ostrinia nubilalis Hübner) infestation.
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