This research was carried out to investigate the effects of organic fertilizer ‘Turf spice (838)’ on the growth improvement of Korean lawngrass in the experimental field and golf course fairway. Compared to the chemical fertilizer ‘Turf plus’ control plot, ‘Turf spice (838)’ was found to perform a similar chlorophyll index, shoot density, and root growth when applied at the higher than 40 g m-2 rate (3.2 g N m-2). Leaf nitrogen and potassium contents were maintained during the experiment periods up to 10 weeks after application, and mean phosphorous uptake was even increased at a higher than 40 g m-2 rate for the period. Preliminary data showed that the application of ‘Turf spice (838)’ reduced soil organic compounds from 3.67% to 3.44% in the control and 40 g m-2 plots, respectively, which remains to be further clarified by investigating thatch degradation and microbe activities.
Figures & Tables
Fig. 1.Determination of optimum application period according to growth potential (GP) and air temperature. Growth potential is an indicator in which shoot and root growth starts at more than 50% and active growth is evident at GP>70%.