A verticutation effect on the sod structure of Festuca rubra commutata and Festuca rubra trichophylla species
2007
Knot, P., Mendel University of Agriculture and Forestry, Brno (Czech Republic) | Hrabě, F., Mendel University of Agriculture and Forestry, Brno (Czech Republic)
A verticutation effect on the sod structure of Festuca rubra commutata and Festuca rubra trichophylla species was assessed in Research unit of Forage production in Vatin in 2003-2005. Growth was cut periodically on 40 mm height. A verticutation was being done twice a year, always in spring and autumn. Samples were taken right after each cut from 200mm depth. Assessed was dry aerial part of biomass and underground part of biomass. Aerial biomass was divided into dead and live matter. Underground biomass was fragmented to the part from 0-20 mm and the part from 21-200 mm. The verticutation significantly lowered the total sod mass weight especially for Festuca rubra trichophylla species. All Festuca rubra commutata (F.r.c.) samples had on average a total sod weight 1695,29 g.square m , Festuca rubra trichophylla (F.r.t.) sod had this weight 1629,56 g per square m Verticutated variations of Festuca rubra commutata samples had this weight lower by 4.1 percent, Festuca rubra trichophylla samples by 8.4 percent. The verticutation lowered total weight of aerial and underground biomass. For aerial biomass the whole matter was lowered by 7.8percent for F.r.c. and by 6.6 percent for F.r.t. For underground biomass was the verticutated average sample total weight lower by 7.8 percent for F.r.c. and by 9.3percent for F.r.t. Differences in sod structure (particular components) are not significant. F.r.c. variations with no verticutation done had aerial biomass 36.8 percent from total weight, F.r.t. 34.2 percent, F.r.c. verticutated samples had this aerial biomass 35.2 percent from total matter and F.r.t. samples had 34.8 percent.
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