Abstract
Experiments were made to clarify the wear injury of Manilagrass produced by exceed pedestrian traffic. Sod was layed on claey loamy soil, perlite mixed soil and polystyrene mixed soil, then stepped on this turf 20, 50 and 100 times per every day except rainy.
Ratio of verdure coverage was 100% when 20 times stepped with fertilizing, but kept at 80 % without fertilizing. The two 50 and 100 times stepping decreased to same value 20%, but injury of 100 times stepped turf has been improved in several month. This recovery speed is higher in case of fertilizing. After stepping, dry weight of turf did not change at 20 times, but decreased at 50 and 100 times in comparison with when planted. Root weight did not change after stepping but when cured in two months, root weight increased in the same manner as no stepping, Effect of soil improvement did not show, in this heavy stepping experiment. Wear injury of turf is improved, if cured at growing season and by fertilizing when heavy stepping.
