Evaluation of Corn Replanting Methods for the Mid-South.

Evaluation of Corn Replanting Methods for the Mid-South K. Allen Pettit Jr. Mississippi growers often have issues with corn seedling establishment due to saturated and cool soils, which will reduce productivity. These cumulative effects of these factors may reduce corn seedling survival, causing producers to replant. Our growers normally grow corn on prepared, raised beds designed to minimize problems associated with early-season soil saturation. However, tillage will destroy raised beds and thus, is not a viable option to control a partial corn stand when replanting. Therefore producers are left with the option to keep the original stand, to replant into the existing stand, or to terminate with specific herbicides and replant. Our objective was to evaluate practical replanting methods for Mid-South corn growers. Treatments included four populations planted at a normal time and replant interval. Two different series of treatments were imposed to evaluate the productivity of intra-planting seed in a partial stand. Corn grain yield (%) was significantly reduced for low plant populations representing densities which would warrant replanting in a production field. Replanting in a clean seedbed was 11% more productive compared to all intra-planted treatments.