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This study evaluates the impact of NPK fertilization on soil chemical properties, nutrient dynamics, and sunflower (Helianthus annuus L.) yield under field conditions in Western Romania. The experiment was conducted on a chernozem soil, where different fertilization rates were applied to assess their influence on key soil parameters, including pH, total nitrogen, available phosphorus, exchangeable potassium, and selected microelements. Soil samples were collected at different growth stages of sunflower and analyze...

West Romania Banat high plains in the Pannonian Basin are low slope and wet. Block subsidence, loess, and river lake beds built a wide glacis belt cut by marshy vales. We mapped soils and limits in six plains from Vinga and the Bega Timis gulf to Gataia Tormac Moravita and Buzias Timis, 43 cadastral units, 346000 ha farm. Data follow Romanian soil taxonomy 2012 and were joined with relief from a digital elevation model, sediment maps, canal and dike maps, and climate means at Arad and Timisoara (T 10.4–10.8C; P ...