INFLUENCE OF MUNICIPAL SEWAGE SLUDGE ON TOBACCO PLANTS’ (Nicotiana tabacum L.) GROWTH AND CROP .....

After amending the cultivation soil with sewage sludge, the impacts on the developmental stages and biomass production of tobacco plants were explored. The growth of all plant organs and their major morphological traits, as well as tobacco plant crop output, were studied. Five different treatments were used, including inorganic fertiliser (11-15-15) / at a rate of 2 g/6 kg soil (equivalent to 16 P units, 16 K units, and 8 N units) and varied sludge concentrations (0,6 kg dry sewage sludge per 5,4 kg soil or 1,0 kilogramme sewage sludge per 5 kg soil). The total dry weight of the leaves, which make up the commercial section of the tobacco plant, was measured as well as the number of leaves, leaf area, and leaf tissue development. The findings significantly support the use of sludge in any proportion for increasing plant growth, with more and larger leaves, more detailed leaf histology, and up to a 30% increase in total yield. Without the fertiliser surcharge, all of the following benefits are realised. Seed biomass was likewise considerably higher in the sludge-amended soil than in the controls.

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