Skip to main content Accessibility help
×
Home

Smutgrass (Sporobolus indicus) Control in Bahiagrass (Paspalum notatum) Pastures

  • Paul Mislevy (a1), Donn G. Shilling (a2), Frank G. Martin (a3) and Stephan L. Hatch (a4)

Abstract

Field experiments were conducted in 1989 and 1990 to evaluate seasonal effects of herbicide application, smutgrass (Sporobolus indicus) growth stage, and herbicide rate on smutgrass control. The experimental design was a split–split plot, with season (late spring, midsummer, and fall) as the whole plot, physiological stage at application (uncut, 15-, and 30-cm regrowth) the subplot, and hexazinone rate (0.0, 0.56, 0.84, and 1.12 kg ai/ha) as the sub-subplot treatment. Whole plots were arranged in three randomized complete blocks. Smutgrass control for the mean of the hexazinone treatments (1989 and 1990) was 95%. Application of 0.56 kg/ha hexazinone during late spring, midsummer, and fall seasons provided 77, 92, and 92% smutgrass control, respectively. Generally, the influence of plant stage at time of hexazinone application had no effect (P > 0.05) on smutgrass control. At 20 d after treatment (DAT), hexazinone had injured bahiagrass (Paspalum notatum) plants by yellowing them, but the plants reverted to their usual dark green color by 40 DAT. Total nonstructural carbohydrates were lower for the 30-cm regrowth than for the uncut plants, regardless of season; however, 30-cm regrowth had little effect on smutgrass control.

Copyright

Corresponding author

Corresponding author's E-mail: pmis@gnv.ifas.ufl.edu.

References

Hide All
Currey, W. L., Parrado, R., and Jones, D. W. 1973. Seed characteristics of Smutgrass (Sporobolus poiretii). Soil Crop Sci. Soc. Fla Proc. 32:5354.
Hitchcock, A. S. 1950. Manual of the Grasses of the United States. 2nd ed. Washington, DC: U.S. Department of Agriculture Misc. Publ. 200. 1051 p.
McCaleb, J. E. and Hodges, E. M. 1971. Smutgrass control at Range Cattle Station, Ona, Florida. Proc. South. Weed Sci. Soc. 24:182186.
McCaleb, J. E., Hodges, E. M., and Kirk, W. G. 1966. Smutgrass control. Fla. Agric. Exp. Stn. Circ. S-149. 10 p.
Mislevy, P. and Currey, W. L. 1980. Smutgrass (Sporobolus poiretii) control in south Florida. Weed Sci. 28:316320.
Mislevy, P., Currey, W. L., and Brecke, B. J. 1980. Herbicide and cultural practices in smutgrass (Sporobolus poiretii) control. Weed Sci. 28:585588.
Mislevy, P., Mullahey, J. J., and Martin, F. G. 1999. Pre-herbicide mowing and herbicide rate on tropical soda apple (Solanum viarum) control. Weed Technol. 13:172175.
Nelson, N. 1944. A photometric adaptation of the Somogyi method for the determination of glucose. J. Biol. Chem. 153:375380.
[SAS] Statistical Analysis Systems. 1985. SAS/STAT Users Guide, Ver. 6, 5th ed, Volume 2. Cary, NC: Statistical Analysis Systems Institute. 956 p.
Smith, D. 1981. Removing and analyzing total nonstructural carbohydrates from plant tissue. Wise. Agric. Exp. Stn. Bull. Rep. 2107. 14 p.
Somogyi, M. 1945. A new reagent for the determination of sugars. J. Biol. Chem. 160:6168.

Keywords

Smutgrass (Sporobolus indicus) Control in Bahiagrass (Paspalum notatum) Pastures

  • Paul Mislevy (a1), Donn G. Shilling (a2), Frank G. Martin (a3) and Stephan L. Hatch (a4)

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