GROWTH OF ALBIZIA LEBBECK (L.) BENTH., IN DIFFERENT SOIL COMPOSITIONS OF KORANGI AND LANDHI INDUSTRIAL AREAS OF KARACHI, PAKISTAN
Abstract
The growth of Albizia lebbeck (L.) Benth., were studied in soils collected from Khan Towel, Tanveer Garment, One Tech Rubber and One Tech Ply Board factories in the vicinity of Korangi and Landhi industrial sites under natural environmental conditions. A. lebbeck plants which were grown in 25, 50 and 75% soils of all industries, displayed reduction in diverse growth variables as compared to plants which were grown in garden soil. Seventy five % Khan Towel factory soil and 25% Tanveer Garment factory soil showed more reduction in A. lebbeck growth than garden soil. Inhibition in growth was principally pronounced in 50% One Tech Rubber factory soil and 75% One Tech Ply Board factory soil as compared to garden soil. 50% One Tech Rubber factory soil was most hazardous depleting great numbers of growth parameters of A. lebbeck. A large numbers of growth parameters were stunted in 25, 50 and 75% Khan Towel factory soils as compared to garden soil. Seventy five % Khan Towel factory soil substantially depleted plant height, cover, leaves and leaflets number, shoot length, leaf dry weight, root/shoot and leaf weight ratios. Number of leaves, root length, leaflets numbers, leaf area, root/shoot and leaf weight and leaf area ratios were considerably low in growth in the treatment of 25% Tanveer Garment factory soil over the garden soil. Fifty% One Tech Rubber factory soil prominently retarded plant height, number of leaves and leaflets, plant cover, shoot length, leaf area, leaf dry weight, root/shoot, leaf weight ratios and specific leaf area as related to garden soil. Plant height, cover, root, shoot, seedling length, leaf area, root, leaf, total plant dry weights and root/shoot ratio were significantly lessened in 75% One Tech Ply Board factory soil.
