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Nutrition of grapevines is very sensitive issue in vineyards. Soil quality is very important matter for growth and quality in vine growing. Rootstocks affect the growth and productivity of grapevine as well as increase or decrease of the nutrient uptake. The present study was conducted to determine the phenological changes of nutrient uptakes in 10 years 'Trakya İlkeren' grape variety (Vitis vinifera L.) in the heavy clay soil conditions. The grapevines are grown on 5BB and 5C rootstocks. The changes of macro and micronutrients in leaf blades from bud burst to post harvest period were investigated in the experiment. Leaf nutrient contents of leaf blades show varied depending on the phenological stages and rootstocks (P < 0.01 and P < 0.05). Nitrogen and phosphorus content of leaf blade was decreased until veraison stage for both rootstocks. The highest potassium (K) content was obtained at blooming stage. In blooming stage nitrogen (N), phosphorus (P), potassium (K) and magnesium (Mg) nutrients was found high on 5C rootstock whereas calcium (Ca) was high on 5BB. Grapevines were found insufficient for P, K and Mg nutrients in the study. Total chlorophyll and chlorophyll a/b ratio showed significantly varied among to rootstocks and phenological stages (P < 0.01). While the highest leaf chlorophyll content was measured during flowering period it was found at the lowest through to harvest on both rootstocks. Overall total chlorophyll contents and chlorophyll a/b ratio were significantly higher on 5BB grafted vines. In the research, 5C was found to be more successful rootstock than 5BB for nutrient uptakes.

The objectives of this study are to determine boron (B) status, fractions and availability of sugar beet grown soils and their relationships with some soil properties. For this purpose, Colwell method (biological indexes) and hot water B extraction method were used to determine plant available B contents of soils. Furthermore, easily soluble, specific adsorbed, organic matter dependent, oxide dependent and residual B fractions of the soils were determined. Boron deficiency symptoms in plants were observed when plants' ages were 56 days in 4 soils and 62 days in 6 soils. B deficiency was observed in the 63.6 % of the soils taken from Çarşamba and in the 33 % of the soils taken from Bafra while Boron deficiency was not observed in the sunflower plants grown on soils taken from Suluova. The B contents extracted with hot water for the soils showed B deficiencies were generally found to be lower than 1.00 ppm.The available B contents extracted with hot water for the soils showed no B deficiencies were found to be between 1.39 and 4.61 ppm. The relationships among the biological indexes indicated that the available B content of the soils can be determined by the hot water extraction method. Easily soluble and oxide dependent B contents gave significant relationships with the biological indexes. As the clay, organic matter and exchangeable Na content increased B contents of the plants at their harvest ages and B uptakes by plants also increased significantly.

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