Effect of 6-Methoxy-2-Benzoxazolinone (MBOA) on <i>Pythium</i> Species and Corn Seedling Growth and Disease

Corn yield reduction following a cereal rye cover crop has been attributed to, among other factors, allelochemicals released from decomposing residue. The allelopathic effect of 6-methoxy-2-benzoxazolinone (MBOA) was evaluated on corn seedling growth, mycelial growth seven pathogenic species Pythium, and root rot seedlings caused by Pythium spp. at 13, 16, 22 to 23°C (room temperature) using plate assay. Mycelial all tested slower with MBOA 0.25 mg/ml compared 0.125 0.0625 the check (4% V8 juice medium containing neomycin sulfate chloramphenicol 0.5% dimethyl sulfoxide). Therefore, no further tests were done mg/ml. In general, reduced radicle length did not cause across temperatures. However, greater severity in observed grown presence lutarium P. oopapillum media amended Similarly, more torulosum spinosum when present 16°C MBOA. These data suggest that disease could be severe is planted winter due are crop.