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vol. 9, nr. 2 (2007)
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Alterations in meadow grass production for different amounts of precipitation and different types of fertilizer
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Mirosław Kasperczyk
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Department of Grassland Sciences, Agricultural University, Al. Mickiewicza 21, 31-120 Kraków |
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vol. 9 (2007), nr. 2,
pp. 371-378
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abstract:
The study of rainfall effects on the production of meadow fertilized with minerals or manure was conducted in two upland areas: over hills and in mountains. As regards yearly precipitation, it was classified into two groups for the hills and three groups for the mountains. Evaluation of yielding included two elements: dry matter yield and crude protein yield. In both sites grass production was positively related to the rainfall over a vegetation season. In the case of the hilly meadow, the differences between both precipitation levels reached 21 and 25% with relation to mineral fertilization, or 40 and 54% with relation to manuring, respectively for dry mater and crude protein yields. In the case of the mountain meadow at full dose of minerals (PKN) the differences in productivity between wet and dry seasons reached 63% for dry matter yield and 33% for crude protein. Manure dose of 12.5 t ha -1 yearly had a strong positive influence on grass production. Average yearly nutritional effects (from 8 years) of manure. expressed per 1 kg PKN were higher by 29% and 14%, respectively for dry matter and crude protein, than those of minerals. However, the effect of 25 t ha -1 dose of manure on grass production was lower by 37% of dry matter and 23% of crude protein.
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keywords:
upland and mountain meadow, moisture conditions, type of fertilization, yielding
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original in:
Polish
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