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During 2016-2017 was investigated wild cucumber Echinocystis lobata (Michx) in different habitats as invasive plant and its diseases. The Cladosporium and Alternaria predominated on a wild cucumber but often were found Fusarium. Either virus was investigated. The Cucumber Mosaic Virus was detected in wild cucumber transplants grown from earlier collected seeds in field crop rotation. Arabis Mosaic Nepovirus was found in cucumber hybrid leaves, produced in the commercial greenhouse. E. lobata plants have almost no natural enemies. Therefore, either viral or fungal disease helps to maintain the natural balance of the ecosystem. [ABSTRACT FROM AUTHOR]

The aim of the study was to evaluate the changes in the content of macroelements (N, P, Ca, Mg and Fe), microelements (Mn, Zn, Cu, B, Co, Mo,) and nonessential elements (Ti, VCr, Pb, Ba, Ni, Ag, Al, Sr, Sn) in the leaves of apple-trees as a reflection of the impact of chemical nature pollution in the cement factory area in Lithuania. As a control, a garden in a "relatively clean" district (Babtai) was selected. Adeficiency (< 2.1-2.4 %) of the nitrogen in the leaves of apple-trees was documented in the investigated sites. According to our results, we maintain that apple-trees growing in Babtai garden sustain deficiency of N, Ca, Fe, Zn and greatly accumulate P and Ba. Apple-tree growing in the vicinity of cement factory sustains the deficiency of N, P, Mn, Cu, Zn, Band Mo and greatly accumulate Ca and Mg. [ABSTRACT FROM AUTHOR]