| Summary: | Abstract Climate variability has increased demand for research on how management practices impact crop growth. Past research suggests increased root cortical aerenchyma tissue may increase corn's tolerance to abiotic stress, and it is possible seed treatments may affect its formation. In 2019, an open‐air pot study was conducted in central Ohio to assess how a commercial seed treatment (Poncho 1250 + VOTiVO) would impact early season above‐ and belowground growth of corn (Zea mays L.). Two recombinant inbred lines and two commercial hybrids were selected, with each corn accession treated with clothianidin + Bacillus firmus I‐1582 (Poncho 1250 + VOTiVO) or untreated prior to planting. Seed treatment had a positive effect on growth stage, plant height, and root surface area at termination. Root porosity was unaffected by seed treatment aside from one commercial hybrid where porosity decreased with seed treatment. Application of Poncho 1250 + VOTiVO improved early season growth of seedlings, but more research is needed to understand its impact on yield and improving crop tolerance to early season abiotic stresses.
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