1 / 25

Herbicide and Fungicide Effects on Warm Season Turf

tale
Download Presentation

Herbicide and Fungicide Effects on Warm Season Turf

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. Herbicide and Fungicide Effects on Warm Season Turf

    2. Herbicide Effects on Disease Herbicide applications that injure or damage turf can often make plants more susceptible to disease or increase disease symptoms Many herbicides ‘safe’ to use on a turf species can cause injury if used improperly

    3. Herbicides with Direct Activity vs. WSG

    4. Tolerance of Warm Season Grass to Selected Herbicides No = not tolerant Variable = depends on variety Dormant = safe on fully dormant turf Complete table in the Feb 2008 edition of Total Landscape Care

    9. Pre-emergent Herbicides Some pre-emergent herbicides are safe on warm season turfgrass Kikuyugrass & seashore paspalum are sensitive to most Root inhibiting pre-emergents can have a a negative effect for root diseases of turf

    10. Pre-emergent Herbicides Products in the DNA herbicide class like Pendimethalin, Barricade or Dimension may affect new root development on stressed or weakened turf. Ronstar has minimal impact on rerooting and does not prevent new stolons from pegging.

    11. Post-emergent herbicides Some grass selective herbicides will have a negative effect on warm season turfgrass Prograss, Velocity, etc Damage is more pronounced during periods of high metabolic activity

    12. Herbicides and PGRs Herbicides or PGRs used at excessive rates may cause plant injury Often herbicides selectivity is based on use rate

    14. DMI-fungicides Many DMI-fungicides have plant growth regulator effects Bayleton Banner MAXX Eagle Trinity/Triton Rubigan They can control diseases but may cause injury to warm season turfgrass

    16. Trinity applied to dormant TifEagle bermudagrass image taken 5/8, Trinity slowed greenup.Trinity applied to dormant TifEagle bermudagrass image taken 5/8, Trinity slowed greenup.

    17. 5/235/23

    18. 6/116/11

    19. 6/266/26

    25. DMI-fungicide Use on Warm Season Turf Effects are most pronounced on turf under stressed conditions Some DMIs have more prounounced effects than others Use DMIs sparingly on WSG species Best use on WSG after dormancy at labeled rates

More Related