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Pollution by heavy metals in the environment is a worldwide problem. The aim of the research study was to record the effect of lead (Pb) and iron (Fe) elements on early seedling growth of Albizia lebbeck L. (Benth.) and Eucalyptus globulus Labill. The obtained results showed that higher level of lead (Pb) and iron (Fe) elements treatment present in the substrate had wide a spectrum of toxicity activity against seedlings growth performance of A. lebbeck and E. globulus as compared to control in lab conditions. Statistically analyzed data showed that seedling growth of A. lebbeck and E. globulus were reduced significantly (p<0.05) with increased concentrations of Pb and Fe 5 to 20 ppm as compared control (0 ppm). The percentage of seedling tolerance index of A. lebbeck and E. globulus showed different level of iron and lead. A. lebbeck showed greater tolerance indices (61.19%) in the presence of Fe than Pb treatments (50.39%). It was also noted that tolerance indices of E. globulus was reduced more in Fe (41.19%) as compared to Pb treatments (55.32%). [ABSTRACT FROM AUTHOR]

Coke production is one of the important sources of pollution from steel industries. The effects of coke (sludge of iron and steel) on seed germination and growth of Vigna radiata (L.) R. Wilczek, Vigna mungo (L.) Hepper and Vigna unguiculata (L.) Walp. were recorded. The seed germination percentage of V. radiata was increased with increase in coke concentration treatment at 25-50% as compared to control treatment in petri dish. Seedling length and root growth performance of V. radiata was also slightly increased with the increase in coke concentration treatment at 75 and 100% as compared to control. The seed germination percentage and root length of V. mungo was reduced with increase in coke concentration treatment at 25%. The obtained results showed more positive effects of coke on seed germination and seedling growth performance of V. unguiculata than V. mungo and V. radiata. Meanwhile, experiment showed decrease in seedling vigor index of V. radiata and V. mungo with the increase in concentration of coke at 100% as compared to control. A gradual increase in seedling vigor index for V. unguiculata with the increase in coke concentration was observed. The coke extracts treatment influence on the seedling tolerance indices of V. radiata, V. mungo and V. unguiculata. The better tolerance to coke treatment in all bean crops might be mainly due to some resistance potential ability of seedlings to coke concentration. [ABSTRACT FROM AUTHOR]

Cement manufacturing industries are responsible for environmental degradation at regional and global level. This study was undertaken the effect of port land cement on three different legume crops in pot. The cement treatment differently influenced on germination and biomass of all studied bean crops. Statistically, the root length of Vigna radiata was decreased at 0.50 g cement level. The cement treatment at similar level significantly reduced shoot and seedling length of V. mungo. The total seedling dry weight of V. unguiculata was significantly affected with cement treatment at 1.0 g. The sprinkled treatment at 2 g reduced tolerance index in seedlings of V. unguiculata, V. mungo and V. radiata, respectively. [ABSTRACT FROM AUTHOR]