Other common names:
ERI, bermudagrass decline, couch decline.
- Commonly seen in spring through to early autumn when the weather is hot and humid.
- Irregular chlorotic or straw coloured patches up to 1 metre in diameter.
- Infected turfgrass sees the lower/older leaves become chlorotic and die.
- Dark brown roots and dieback.
- Dark runner hyphae may also be present on the roots and stolons and lobed hyphopodia may be seen in the roots and stolons (Stirling, 2002).
- The disease can be exacerbated by unfavourable growing conditions like low light and poor drainage.
Cynodon spp. Including green couch, hybrid bermudagrass and hybrid green couch.
- Pesticides: See available tabs below for registered products. Use as per label instructions.
- Integrated Pest Management (IPM): Use a combination of approaches listed on this page.
- Cultural: Providing favourable growing conditions for the turfgrass. Increase mowing height, improve drainage and reduce thatch levels. Reduce the amount of nitrogen fertiliser being applied to the turfgrass.
- Mechanical: Aeration practices.
Stirling, M. (2002) Ectotrophic root-infecting fungi on golf course turf in Queensland, Horticulture Australia Final Report TUO0005, Sydney, pp. 29.
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