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The use of Deschampsia beringensis and Deschampsia caespitosa in reclamation



The use of Deschampsia beringensis and Deschampsia caespitosa in reclamation



Buvisindi 5(0): 47-61



Deschampsia beringensis and Deschampsia caespitosa were grown in pure stand and various binary mixtures, in an upland area in Iceland on sandy soils, where aeolian deposition was prominent. The main aim of the experiment was to identify suitable species mixtures to use in soil reclamation under such conditions. The experimental plots were both subjected to grazing and protected from grazing and two fertilizer application rates were used. The plots were sown 1986 and observed for the following three years. Grazing greatly influenced the performance of the grass species, D. beringensis is completely intolerant of intensive grazing, whereas grazing enhances the vegetative cover of D. caespitosa. More aeolian sediments were collected in D. beringensis plots than in plots containing other species, but it still showed good tolerance to the sediments. The lower fertilizer rate led to poorer growth and persistance of all species than the higher fertilizer rate. It is advantageous to sow D. caespitosa in a mixture with Festuca rubra under intensive grazing, whereas D. beringensis is more suited to growth in pure stand where grazing intensity is low or absent.

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Accession: 009634182

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