THE NUTRITIONAL CONDITIONS AND SOME HEAVY METAL CONTENTS OF THE VINEYARDS IN A SEMI-ARID AREA

摘要

Turkey is one of the most important seedless raisin producers in the world market. Approximately, 82% of the seedless raisin has been produced in the western part of Turkey since the climate (semi-arid) of this region is very appropriate to grow seedless grape. More specifically, the Plain of Alasehir, located in the Gediz Basin in Aegean Region has been known its high quality seedless raisin production. About 25% of the seedless raisin of the entire Aegean Region is produced in the Plain of Alasehir. Therefore, the Plain of Alasehir region was selected to determine some heavy metal contents (Cd, Co, Cr, and Pb) and certain macro and micro element contents (N, P, K, Ca, Mg, Fe, Zn, Mn, and Cu) of the leaf samples obtained from the vineyards in the area. The plant samples from 13 vineyards were analyzed by collecting the samples across the first plant bunch during the veraison period. In terms of nutrition profile, N deficiency was detected in 15% of vineyards while P deficiency was determined in 38.5% of the vineyards. Similarly, Fe deficiency was detected in the 30.8% of the vineyards. The contents of Zn, Mn, Cu, K, Ca, and Mg were sufficient in all of the vineyards. Some heavy metal contents of the leaf samples were analyzed and it was found that there was no pollution for the Cd, Co, and Pb in all the vineyards. Cr pollution was not detected in 93.2% of the samples.