Skip to main content Accessibility help
×
Home

Turf Safety to Dithiopyr of Newly Seeded Kentucky Bluegrass (Poa pratensis)

  • Zachary J. Reicher (a1), Daniel V. Weisenberger (a1), Glenn A. Hardebeck (a1) and Clark S. Throssell (a1)

Abstract

Competition from large crabgrass is often responsible for the establishment failure of spring-seeded cool-season turfgrasses. The objective of this study was to determine how soon after seedling emergence dithiopyr could be applied without causing unacceptable damage to Kentucky bluegrass. Dithiopyr at 0.28 and 0.56 kg/ha was applied at various times prior to seeding and after emergence of Kentucky bluegrass in the field and greenhouse. Dithiopyr damaged Kentucky bluegrass seedlings in the greenhouse when applied earlier than 10 d after emergence (DAE) at 0.28 kg/ha and 14 DAE at 0.56 kg/ha. In the field study with heavy large crabgrass infestation, no significant phytotoxicity or long-term thinning occurred with any application of dithiopyr after emergence of Kentucky bluegrass. Dithiopyr applied as early as 3 DAE improved cover of Kentucky bluegrass by reducing competition from large crabgrass. When seeding is done early in spring before large crabgrass germination, dithiopyr could be applied at 0.28 kg/ha 10 DAE or at 0.56 kg/ha 14 DAE without risk of injury. Dithiopyr could be applied as early as 3 DAE on sites with heavy large crabgrass pressure or to late spring seedings when large crabgrass is germinating because the risk of turf thinning is warranted given the benefit of reduced large crabgrass competition for the desired turf.

Copyright

Corresponding author

Corresponding author's E-mail: zreicher@purdue.edu.

References

Hide All
Bevard, D. S. and Watschke, T. L. 1999. Seeding creeping bentgrass (Agrostis stolonifera) tolerance to dithiopyr. Weed Technol. 13: 216220.
Bhowmik, P. C. and Bahnson, B. M. 1989. Pre and post emergence smooth crabgrass control with MON-151 in cool-season turfgrass. Proc. Northeast. Weed Sci. Soc. 43:110.
Bingham, S. W. and Schmidt, R. E. 1983. Turfgrass establishment after application of preemergence herbicides. Agron. J. 75: 923926.
Carroll, M. J., Dernoeden, P. H., and Krouse, J. M. 1996. Zoysiagrass establishment from sprigs following application of herbicides, nitrogen, and a biostimulant. HortScience 31: 972975.
Dernoeden, P. H., Davis, D. B., and Fry, J. D. 1988. Rooting and cover of three turf species as influenced by preemergence herbicides. Proc. Northeast. Weed Sci. Soc. 42: 169173.
Enache, A. D. and Ilnicki, R. D. 1991. BAS 514 and dithiopyr for weed control in cool season turfgrasses. Weed Technol. 5: 616621.
Fermanian, T. W. and Haley, J. E. 1994. Application of prodiamine to immature turfs. Weed Technol. 8: 617620.
Fry, J. D., Gaussoin, R. E., Beran, D. D., and Masters, R. A. 1997. Buffalograss establishment with preemergence herbicides. HortScience 32: 683686.
Johnson, B. J. and Bundschuh, S. H. 1993. Effect of dithiopyr timing on establishment of three cool-season turfgrass species. Weed Technol. 7: 169173.
Johnson, B. J. and Duncan, R. R. 1998. Influence of herbicides on establishment of eight seashore paspalum cultivars. J. Environ. Hortic. 16 (2): 7981.
Reicher, Z. J., Weisenberger, D. V., and Throssell, C. S. 1999. Turf safety and effectiveness of dithiopyr and quinclorac for crabgrass control in springseeded turf. Weed Technol. 13: 253256.
Watschke, T. L., Duich, J. M., and Waddington, D. V. 1973. Preemergence crabgrass control with herbicides in 1972. Proc. Northeast. Weed Sci. Soc. 27: 316319.
Wetzel, H. C. and Dernoeden, P. H. 1993. Perennial ryegrass seedling tolerance to dithiopyr. Proc. Northeast. Weed Sci. Soc. 47:49.

Keywords

Turf Safety to Dithiopyr of Newly Seeded Kentucky Bluegrass (Poa pratensis)

  • Zachary J. Reicher (a1), Daniel V. Weisenberger (a1), Glenn A. Hardebeck (a1) and Clark S. Throssell (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed