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vol. 3, nr. 2 (2004)
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Mountain meadow yielding depending on meteorological conditions
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Mirosław Kasperczyk
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Department of Grasslannds, University of Agriculture, Al. Mickiewicza 21, 31-120 Kraków |
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vol. 3 (2004), nr. 2,
pp. 263-269
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abstract:
Mountain meadow yielding during the vegetation period (IV-VIII) depending on meteorological conditions was estimated over the 19-year period of investigations. Agrostis capillaris, Festuca rubra and Holcus mollis were species prevailing in the meadow sward with no fertilization whereas Dactylis glomerata, Phleum pratense and Festuca pratensis prevailed with full fertilization. Three grups of years were set apart on the basis of hydrotermic Sielianow index over the investigation period. The year of index values below 2.0 were classified to the first group, of values 2.0-2.5 � to the second group and of values above 2.5 to the third group. Fertilization in amount of 33 kg P, 66 kg K and 120 kg N ha-1 was highly efficient factor intensifying productivity of mountain meadow. As the result of this fertilization the meadow yields increased by meanly 129% concerning the dry mass and by 138% concerning total nitrogen content in the investigated period. Effect of meteorological conditions on meadow productivity was high. Among the favourable and less favourable for grass growth years the difference in the meadow yields approached 40%. In dryer years, in which hydrotermic index did not increase above 2.0, meadow was characterized by the lowest productivity. The meadow acquired higher productivity during the years of 2.0-2.5 index. In the case yields were meanly higher by 16% concerning the dry mass and 9% concerning the total protein content. On the other hand there was no distinct effect of hydrotermic index above 2.5 on the meadow yielding.
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keywords:
mountain meadow, meteorological conditions, fertilization, yielding
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original in:
Polish
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