SodininkyStĖ ir darŽininkyStĖ 28(2)

value (Mochecki et al., 1986; Sadowski, 1990) in cement factory garden as comparedto the control garden. According to Dmuchowski and Bytnerowicz (1995), the leavesof tree species do not accumulate Cu. It is stored in the roots and transported to theleaves only when necessary (West, 1979). The similar amount of Zn was determinedin the apple-tree leaves from the control and the cement factory gardens, but onlycement factory garden soil presented significantly greater content of Zn. Accordingto Shear and Faust (1980), the deficiency range of Zn for the apple-tree is less than14 mg kg -1 , so in investigated sites Zn deficiency occurred. Zinc deficiency may becaused by high amount of P (Loneragan et al., 1979). In our study excess of P wasdetermined in the apple-tree leaves sampled in control garden. Also Zn deficiency isassociated with high pH, calcareous soil in which Zn availability is greatly reduced(Neilsen, Neilson 2003). Under deficiency of Zn the fruit-tree resistance to cold stressis reduced (Intensive technologies..., 2005; Mochecki et al., 1986). Contradictoryresults were obtained with respect to Mo content in the leaves from different sites.The optimum content of Mo was determined in the apple-tree leaf samples from thecontrol garden (Sadowski, 1990), while deficiency of Mo was determined in the leavessampled near the cement factory, though the significant greater concentration of thiselement as compared to control site was determined in the soil. On the basis of theV data obtained by us as compared with Barker (1989) and Markert (1996) results,it can be deduced, that V was present in leaves of apple-tree from the control gardenand the cement factory site in concentration lower than is normally found in plants.Barker (1989) and Markert (1996) report that Ba requirement in the plant tissue is40 mg kg -1 , so excess of Ba was determined in the apple-tree leaves from the controlgarden, also the garden near cement factory.According to Neilsen and Neilson (2003) 16 chemical elements (O, C, H, N, P, K,Ca, Mg, S, Mn, Fe, B, Cl, Cu, Zn, Mo) are essential for the normal and healthy growthof apple-trees. Also greater concentrations of N, P, S, K, Ca and Mg are necessary.According to our results, apple-tree growing in Babtai garden, selected as control site,sustain deficiency of essential elements such as N, Ca, Fe, Zn and greatly accumulateP and Ba. The apple-trees growing in the vicinity of cement factory sustain the deficiencyof N, P, Mn, Cu, Zn, B and Mo. Emitted cement dust from the factory inducedthe accumulation of Ca and Mg.Conclusions. The deficiency of N and P was determined in the leaves of theapple-trees growing in the cement factory vicinity. Also deficiency of such essentialelements as Mn, Cu, Zn, B, Mo was determined in the leaves of apple-trees growingnear cement factory. It is possible to assume that because of cement factory activity,apple-trees in this area are subjected to accumulate Mg and Ca. It shows that presentindustrial activities may change and worsen nutrition quality of the fruit trees.Acknowledgement. This work was supported by Lithuanian State Science andStudies Foundation under project FIBISTRESS.Gauta 2009 05 05Parengta spausdinti 2009 06 0535