Study on the effect of coated controlledrelease urea on the growth of tall fescue

The effect of coated controlledrelease urea on the growth of tall fescue (Festuca arundinacea) was studied in potted condition and two types of coated controlledrelease urea (U30 and U80, the release duration was 30 days and 80 days) were used. The results indicated that the turfgrass growing time was the shortest (only 51 days) treated with U80 and its content chlorophyll was higher than other treatments after 85 days growth. The aboveground biomass of turfgrass showed a pattern of increasing at the beginning and declining later. The underground biomass of turfgrass treated with U80 or U80 plus 30% of common urea was significantly higher than other treatments only with common urea (P0.05).