| Control of smooth crabgrass with applications of preemergence herbicides at reduced rates
| Hamilton, G. W. Jr.; Landschoot, P. J.; Watschke, T. L.; Clark, J. M.; Hoyland, B. F. 1991. Turfgrass Research Results 1990/1991 [Penn State]. p. 85-86.
| More | 225779 |
| 1991 crabgrass control with preemergence herbicides
| Hamilton, G. W. Jr.; Watschke, T. L.; Clark, J. M. 1991. Turfgrass Research Results 1990/1991 [Penn State]. p. 87-88.
| More | 225838 |
| 1991 pre/postemegence [postemergence] control of smooth crabgrass
| Hamilton, G. W. Jr.; Watschke, T. L.; Clark, J. M. 1991. Turfgrass Research Results 1990/1991 [Penn State]. p. 89-90.
| More | 225839 |
| 1991 crabgrass control with postemergence herbicides
| Hamilton, G. W. Jr.; Watschke, T. L.; Clark, J. M. 1991. Turfgrass Research Results 1990/1991 [Penn State]. p. 91-92.
| More | 225840 |
| Poa annua seedhead suppression on a putting green
| Hamilton, G. W. Jr.; Clark, J. M.; Watschke, T. L. 1991. Turfgrass Research Results 1990/1991 [Penn State]. p. 93-94.
| More | 225841 |
| Turfgrass response to several plant growth regulators
| Clark, J. M.; Hamilton, G. W. Jr.; Watschke, T. L. 1991. Turfgrass Research Results 1990/1991 [Penn State]. p. 95-101.
| More | 225842 |