Abstract
AbstractOlive ( Olea europaea L.) plants were sprayed (one, two or three times) with nutrient solutions containing KCl, KNO 3 and K 2 SO 4 with the same amount of K (0, 1, 2 and 3% w/v). The weight of the plants was unaffected by salt type, number of sprays or K concentration of salts, whereas the dry matter percentage was significantly increased in the plants treated with K 2 SO 4 . Furthermore, the application of K 2 SO 4 led to a significantly higher N concentration in leaves than that of KCl. K-salts increased K concentration in plants in the following order: KCl> KNO 3 > K 2 SO 4 and three foliar applications were significantly more efficient than one. Moreover, irrespective of plant part, K spray application frequency significantly affected Fe and Zn concentrations in the plants studied. Finally, although KCl increased Cl concentrations more than KNO 3 and K 2 SO 4 , the former fertilizer was the most efficient to improve the K status of the olive cv. Chondrolia Chalkidikis.Keywords: Chondrolia Chalkidikis, fertilizers,
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