Rubin from Roanoke, Al writes
Per Dithiopyr 40 WSB label: to ensure establishment of desirable turfgrasses, wait 10 weeks after a single application of Quali-Pro Dithiopyr 40 WSB, or 4 months after a split application program totaling more than 0.46 oz./1000 sq. ft. (1.25 lb./acre) before reseeding, overseeding, or sprigging of treated areas. EXCEPTIONS: In cases where slight injury to perennial ryegrass can be tolerated, overseeding of bermudagrass with perennial ryegrass may be carried out as early as 6 weeks after application. To prevent injury to perennial ryegrass, overseed bermudagrass 8 weeks after the Quali-Pro Dithiopyr 40 WSB application.
Answer last updated on: 01/26/2021
