Spring Large Patch in Warm-season Lawns and Golf Turf
Large patch outbreaks typically occur during two separate periods – in the fall and then again in the spring. With the significant rainfall this winter along with mild temperatures, large patch may be highly active resulting in damaged turf this spring.
- Management practices for large patch
- Reduce soil moisture – saturated soil conditions exacerbate large patch, so reduce irrigation and improve drainage where possible
- Regular aeration – will reduce compaction and water-logged soils
- Apply Spring N - Research from Missouri and Kansas shows spring-applied N (applied at 60-70oF at 2” soil temperature) improves recovery from infection but does not increase disease development
- Fungicides for spring large patch control in lawns
- Spring timing - application is typically targeted near 50% turf green-up but due to the mild winter conditions and excessive rainfall to date, multiple applications may be needed for the most effective large patch control
- Armada® - provides broad-spectrum disease control including large patch and fairy ring
- Fungicide solutions for spring large patch control in golf turf
- Spring timing – application is typically targeted near 50% turf green-up but due to the mild winter conditions and excessive rainfall to date, multiple applications may be needed for the most effective large patch control
- Mirage® Stressgard®– highly effective for preventative large patch in fairways and tees and will also control fairy ring
- Need more info? – Contact your Envu area sales manager if you need assistance
Envu fungicide recommendations for spring large patch control
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Solution Sheet - Large Patch |
Prevention of large patch in warm-season lawns is relatively simple given properly timed fungicides. (Envu)
Large patch in zoysia research plots at the University of Missouri (Envu)