UC ANR Publication 3443 In order to combat seed rot in sweet corn, use only high quality, certified fungicide treated seed. Pythium species are one of the major pathogens known to cause seedling diseases in corn in Iowa. What causes rotting sweet corn seeds and what can be done to avoid seed rot disease of corn? Seed rot causes the corn seed to rot before germination and damping Time of Occurrence: The seed rot can occur in any of the two phases. is the number of hours (unless otherwise noted) from treatment until the treated area can be safely entered without protective clothing. of actions. Preferably, start the seeds on a heat mat or under fluorescent lights. soft near the soil line. (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','//www.google-analytics.com/analytics.js','ga');ga('create', 'UA-46953310-1', 'auto');ga('require', 'displayfeatures');ga('send', 'pageview'); Infected tissue may be water-soaked (Pythium), white to pink (Fusarium), or bluish (Penicillium). mechanical injury to the seed pericarp. Division of Agriculture and Natural Resources including planting depth, soil temperature, soil type, seed quality, and Seed rot in corn is most prevalent in soil with temperatures below 55 F. (13 C.). Sign up to get all the latest gardening tips! For noncommercial purposes only, any Web site may link directly to this page. The stem of infected seedlings becomes brown and Fusarium is a pathogen commonly found in crop residue and soil. For more information, see http://www.frac.info. Resistance to Fusarium crown rot is not available in current corn products. High Residue Suitability ratings may vary by environment and geography. Often, seeds fail to germinate at all and simply rot in the soil. alternate in a resistance management program. Keep the plants regularly watered to avoid drought stress and keep them healthy. In either case, the plant is a dead one, which cannot be further cultivated. Pioneer ® brand food-grade corn products are designated as food-grade yellow and food-grade white. (R.E.I.) Seed and seedling rots (also called pre- and postemergence damping-off) of corn and soybeans are caused by a number of different soilborne or seedborne fungi. Also, plant sweet corn on a raised temperature and only after temperatures are consistently above 55 F. (13 C.). © 2019 Regents of the University of California, Division of Agriculture and Natural Resources. These products meet the growing demand for corn processing used for beverage alcohol and human food consumption. dent (field) corn. the Fungicide Resistance Action Committee (FRAC) according to different modes Sweet corn seed rot is a fungal disease that can result from various species of fungi including but not limited to Pythium, Fusarium, Diplodia and Penicillium. Unfortunately, we cannot provide individual solutions to specific pest problems. Sweet corn, especially the supersweet hybrids, is much more susceptible than Let’s learn more. Aboveground symptoms include yellowing, wilting, and death of the leaves. from fungicide seed dressings, especially in poorly drained and cold soils. All contents copyright © water-soaked (Pythium), white to pink (Fusarium), or bluish (Penicillium). Staff-only pages (Reviewed 1/06, updated 8/08). Sweet corn, especially the supersweet hybrids, may benefit