Badaniami objęto sześć gatunków roślin, które uprawiano w hali wegetacyjnej w warunkach wzrastających zawartości niklu w podłożu. Stwierdzono zróżnicowaną reakcję poszczególnych roślin zarówno w zakresie plonowania jak i pobierania tego pierwiastka. Największy spadek plonów, wywołany koncentracją niklu w podłożu zaobserwowano na obiektach ze słonecznikiem, facelią i lucerną, największy natomiast w przypadku prosa. Pobranie niklu wraz z plonami układało się nieco inaczej. Najwięcej tego pierwiastka pobrał słonecznik, następnie proso i peluszka, a najmniej bobik.
EN
In the condition of pot experiment the influence of high concentration of nickel in soil on the yield and chemical composition six plant species: sunflower, horse bean, field pea, millet, alfalfa and phacelia was investigated. The results obtained under the conditions of the experiment indicate that doses of nickel had a negative effect on the yield all species of plants, which progressively and markedly decreased with the increase of nickel concentration in soil. This was associated with increase in plants tissue nickel concentration. Under the same growing conditions, different plant species had differ ability to uptake of nickel from soil. Phacelia, sunflower and horse bean was more susceptible to nickel toxicity as compared to field pea, millet and alfalfa.
On the area were research was conducted the most important stress factors on checked area were dry soil, not enough oxygen in the soil, soil compaction, salinity, alkaline soil, mechanical damages, pollution of the air. The most damaging for tree condition is accumulation of few factors, for example high temperature, drought and salinity. The most difficult stress conditions were recognised on streets with high traffic; Targowa, Solidarności, Jagiellońska, Kłopotowskiego. Streets with lower traffic have a problem of restricted soil for rooting and not porous pavements. Destroyed soil and water conditions have the biggest impact on deterioration of tree vitality and long life chances. Conducted studies proofed that soil mast be protected. Knowledge of trees reactions helps to take responsible decision concerning urban forest management.