This study was undertaken to study the effects of cement dust in vegetation in Azadirachta indica and Mangifera indica . The different amounts of cement dust mixed with soil on the seed germination, plant growth, leaf area. The reason for this was that cement dust generated as a by-product from the cement factories is rich in potassium.Cement dust is a potentially phyto-toxic pollutant. Large amounts of toxic substances are emitted during its production viz. carbon dioxide, particulate matter (dust), oxides of nitrogen and sulfur dioxide. Cement dust also contains heavy metals like nickel, cobalt, lead, chromium and mercury. Its alkaline constituents such as oxides of calcium, potassium and sodium are responsible for the alkalization of ecosystem and soil. It is a common air pollutant affecting tree leaf in various ways i.e. cement dust deposition on leaves plugs stomatal activitiy and interrupts light absorption and gaseous diffusion. The cover formed by deposition of dust particles decrease the pigmentation of plant leaves. The physical and chemical properties of plant tissues can change by such large dust pollution. The behavior of plant body cells depends upon the chemical properties of dust particles. .The cement dust artificially sprayed on the plant surface with different levels. All the morphological and biochemical were analyzed. Morphological parameters Root length, Shoot Length, and dry weight were inhibited in high dose of cement deposition when compare control plant.
cement dust deposition, vegetation,seed, photosynthesis
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