POPOVICI, Constantin Iulian
May 2013
Metalurgia International;May2013, Vol. 18 Issue 5, p67
Academic Journal
Turf areas add value to residential areas or bussines centers, they offer us playing surfaces in public parks, golf courses, soccer fields or tennis courts, for recreational activities. We can say that in modern urban areas green lawns are a condition in the assuring of a certain level of life quality. The industiy siuiounding landscape design and lawns maintenance has reached impressive numbers. In the USA alone the turf industry had a turnover of 61 bilion dollars according to a survey from 1997. In the state of New York the cost of establishing new turf areas was 43 milion dollars in the year 2003. Maintenance costs of lawns, although may be substantial, are less substantial than the costs of establishing a new lawn. Extending the life of a lawn may help to saw money on the long term. The expansion of residential areas in Romania, in the last decade triggered a demand for lawns. Lawns are subjected to thatch accumulation, this procees being caused by excesive accumulation of roots, dried shoots and clippings A thatch layer thicker than I.5 cm may have a negative impact on water and nutrients infiltration into the soil, also it can increase the development of fungal diseases. Removing thatch can lead to a lower necessity of a wide range of inputs like expensive fertilizers, pesticides, irrigation, overseeding and of course it can extend the life of lawns. The aim of this study is to evaluate the effect of different aerification techniques on turf grass ground cover, density and overall quality. The biological material consisted in seven cool season turf grass species which are frequently used in our country for the establishment of lawns in residential areas. The experiment was set up in the experimental fields at the Ezareni fann in lasi county. The experimental design was a split plot design with three replicates. The evaluation of tuifgrass quality indicators was done using the visual rating scale elaborated by the National Tuifgrass Evaluation Program from USA. Dethatching was done using a special equipment that performs verticutting (VCT) and power-raking (PWR). For statistical interpretation of the data, we performed ANOVA test. The best dethatching results were achieved when we used the combinated technique VCT+PWR. The grass species most responsive lo dethatching were Festuca rubra rubra and Poa pratensis.


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