Impact of precipitation and frequency of cuts on phosphorus content in herbage | Posúdenie vplyvu zrážok a rôznej frekvencie kosieb na koncentráciu fosforu v trávnej fytomase
2009
Britaňák, N., Výskumný ústav trávnych porastov a horského poľnohospodárstva, Banská Bystrica (Slovak Republic) | Hanzes, Ľ. | Ilavská, I.
Plants require macrobiogenic elements (calcium, nitrogen, magnesium, phosphorus, potassium and sulphur) to meet their demands throughout their life cycle. The attribute macrobiogenic means that the content of these elements in dry matter (DM) is more than 1 g/kg. Phosphorus is significant for all the living organisms as an important component of genetic information and as a universal conveyer of energy. Phosphorus (P) is very mobile in the living organisms; however, the P mobility in soil is dependent on the soil moisture content and the soil reaction. Models predicting the future climate presume that the rise in temperature by 1 Kelvin is going to increase rainfall by 7% and to redistribute and intensify the precipitation. The models foresee the intensification of the hydrological cycle through increased intensity of rainfall and prolonged periods of drought. The altered hydrological regime will affect the availability of P to plants. The more intensive rainfall results in enhanced content of P in herbage DM, mainly during the growing seasons with the periods of drought.
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