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AGROCHEMICAL MAPPING ELEMENTS IN THE SOILS OF THE LOW PLAIN GRASSLANDS OF BANAT, ROMANIA
Abstract
The aim of this study is to identify an appropriate management practice applicable to permanent grassland ecosystems located in the low-altitude area of the Western Plain of Romania. To achieve this objective, a comprehensive study was conducted, initially focusing on determining the main soil types and their characteristics. The next stage involved performing soil analyses to identify the natural reserve of macroelements. Subsequently, the type of plant association that defines the permanent grassland ecosystem was determined. Finally, the study presents optimal fertilization formulas designed to ensure the sustainability of the ecosystem, maintain the stability and biodiversity of the grasslands, and support an adequate productivity level. The analysis of the supply dynamics of pasture soils in the Western Plain of Romania reveals that, simultaneously with the increase in pH values, there is a downward trend in the content of P, K, and NI. Essentially, as the pH becomes more alkaline, the values of the main nutrients in pasture soil decrease, leading to a reduction in the production of plant communities and a decline in their production quality. The increase in the reaction values of permanent pasture soils is most strongly felt in terms of phosphorus supply. It has been demonstrated that an increase in soil alkalinity by approximately one pH unit is associated with a halving of phosphorus supply. This phenomenon implies an almost double increase in P2O5 fertilization.
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