Browsing by Author "Hakerlerler, H"

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    Effects of different types and levels of zinc sulphate applications in vineyards (Vitis vinifera L.) in a semi-arid environment
    Aydin, S; Yagmur, B; Hakerlerler, H; Çoban, H
    The present study was carried out to determine the effect of soil and foliar applications of different rates of zinc in the vicinity of Alasehir, one of the most important viticultural centres in the Western Aegean Region where the round seedless grape cultivar (Vitis vinifera L.) is widely grown, on productivity and some chemical quality characteristics as well as leaf primary and secondary elements. Zinc was applied to soil and foliage as ZnSO4 center dot 7H(2)O in the experiment with four replications. One soil application (0-15-30-45 g ZnSO4 center dot 7H(2)O/vine) in addition to foliar application replicated three times (0.0-0.025-0.050-0.10% Zn). Both soil and foliar zinc sulphate (ZnSO4 center dot 7H(2)O) applications increased the amount of fresh grapes per vine. The highest yield was observed at 30 g ZnSO4 center dot 7H(2)O level per vine in soil application and at the rate of 0.05% Zn in foliar application. Zinc sulphate produced a significant positive effect on the contents of primary and secondary elements (N, P, K, Ca, Mg, Fe, Zn, Mn, Cu) of the leaf (lamina and petiole) with the exception of the leaf petiole manganese content in the soil application and the leaf petiole copper content in the foliar application. Soil and foliar applications of zinc sulphate negatively affected the firmness of the berry flesh. The only fruit quality characteristic positively affected by soil and foliar applications of zinc sulphate was the amount of total soluble solids. Despite the fact that the soil application of zinc sulphate did not have any significant effect on some sugar fractions, the foliar application increased only the fructose and a-glucose significantly. In conclusion, it was established that foliar application of zinc sulphate was slightly more effective on yield as well as some quality characteristics as compared to soil application. Therefore, it was concluded that foliar application could be preferred as it is more economical and easier to apply.
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    Environmental exposure to cadmium and lead in the pediatric age group
    Onag, A; Oksel, F; Taneli, B; Hakerlerler, H
    Lead additives in automotive fuel, smog from a nearby industrial center warranted an investigation on cadmium and lead in Manisa, a city of tabacco processing. Hundred and one children were screened in view of lead and cadmium exposure. In 23 children between the ages of 0-2 years the mean (+/-SEM) serum lead level was 7.15 +/- 0.10 mu g/dl, in 28 between the ages of 3-6 years was 7.20 +/- 0.10 mu g/dl and in 50 between the ages of 7-15 years was 7.20 +/- 0.10 mu g/dl, respectively, with no significant differences. Serum cadmium levels in the same groups of children was 0.066 +/- 0.008 ng/ml, 0.078 +/- 0.008 ng/ml 0.088 +/- 0.006 ng/ml, respectively. The difference in cadmium levels between the age groups of 0-2 years and 7-15 years was significant (p<0.038). This significant increase in blood cadmium level is also shown by simple linear regression analysis: Cadmium (ng/ml) = 0.049 + 0.005 (age), and p<0.0001, F Ratio = 50.578, coefficient of correlation = 0.581. Our study revealed that lead is not a serious environmental contaminant for children, yet; however, the increasing trend seen in exposure to cadmium warrants serious consideration and urgant preventive measures.
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    Zinc-deficient sprouting blight potatoes and their possible relation with neural tube defects
    Ulman, C; Taneli, F; Oksel, F; Hakerlerler, H
    Maternal nutritional zinc deficiency is blamed in the pathogenesis of neural tube defects. In animal and plant domains zinc is required for growth and development. The objective of the present study was to show that sprouting blighted potato tuber is zinc deficient. In five potato varieties, zinc was measured by atomic absorption spectrophotometry in wet-ashed paired slices of edible potato tuber and in its peel, in blighted potato tuber and in its sprout. Zinc contents were measured as the mean (+/- SEM) and the following values were found, 0.388 +/- 0.036,0.623 +/- 0.059,0.550 +/- 0.030 and 1.089 +/- 0.181 mg per 100 g wet weight, respectively. In conclusion, we believe that long-term consumption of zinc-depleted, blight potato tuber by pregnant woman could be potentially teratogenic with the consequent birth of a baby with neural tube defects. Copyright (C) 2004 John Wiley Sons, Ltd.
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    EFFECT OF ORGANIC FERTILIZATION ON FIG LEAF NUTRIENTS AND FRUIT QUALITY
    Mordogan, N; Hakerlerler, H; Ceylan, S; Aydin, S; Yagmur, B; Aksoy, U
    Turkish dried fig (Ficus carica L.) production plays a major role in the world trade due to its volume and quality. The production is generally realized from orchards on steep slopes under rain-fed conditions. Birgi-rimaz in odemi has peculiarities in respect to dried fig production. In this region, colluvial soils require additional late-winter irrigation by flooding especially in years because of inadequate winter rainfall. Organic dried fig production has gained importance since mid 1980s. The research work aimed at testing the effect of sheep and cow manure mixtures (at two different ratios: 1:1 and 2:1) on leaf and fruit nutrient contents, vigor, and fruit quality. The results proved that tree vigor and fruit quality were improved with the applied rates of farmyard manure, where as the effect on nutrient content of the leaf was not marked.