Determination of Some Macro Element Contents of Sunflower (Helianthus annuus L.) Plant Grown in Uzunk？prü District

This study was done to determine the some macro element contents of sunflower (Helianthus annuus L.) plant of Uzunk？prü district in Edirne province. For this purpose, leaf samples, which were collected from 25 different agricultural areas of Uzunk？prü district and were analyzed. At the end of this research, the leaf samples results were compared with the critical reference values. According to the leaf samples analyzed results, min and max values of N, P, K, Ca and Mg macro nutrient elements; 2,63%- 3,83%; 0,15%- 0,54%; 1,31%- 5,67%; 2,18%- 5,41% and 0,18%- 0,80% were obtained, respectively. When these results were compared critical values, N 100% sufficient; P 52% sufficient, 48% deficient; K 80% sufficient, 20% deficient; Ca 64% sufficient, 36% excess and Mg 64% sufficient, 36% deficient were obtaine