Effect of 11 Pre-emergence Herbicides on Vegetative Establishment of Zoysiagrass (Zoysia japonica)

摘要

Experiments were conducted to evaluate the weed control efficiency of 11 pre-emergence herbicides on the vegetative establishment rate of zoysiagiass by strip sodding Herbicides were applied seven days after strip sodding. Use tates were 50%, 100% and200% of recommendation from supplier, and spray volume of water was 26 mL center dot m~(-2) Prodiamine (WG) and pendimethalin (EC) resulted in relatively good coverage at 50% of recommended rates Treatments with pendimethalin (SC), pendimethalin (EC) and oryzalin (SC) resulted in the average coverages of 153.7%, 141.9% and 141.9%, respectively compared to control plots in 198 days. Annual grassy weed control rates in 80 days after treatment by pendimethalin (SC), napropamid (WP) and oryzalin (SC) were93 6%, 90.0% and 83 1%, respectively even at the 50% rates of recommendations Annual broad-leaf weeds were temarkably controlled even at the 50% rates of recommendations by all the herbicides except napropamid (WP). As an ovei all conclusion oryzalin (SC), pendimethalin (SC, EC) were believed to be good pre-emergence herbicide to use at the early stages of vegetative zoysiagrass propagation.