Rizvi et al
Greener Journal of Agricultural Sciences Vol. 3 (10), pp. 725-735, October 2013.
ISSN: 2276-7770 © 2011 Greener Journals
Manuscript Number: 082613803
Rubber Crumb Pollution Affecting the Growth of Some Leguminous Plants
Aamna Rizvi1, Mohammad Zafar Iqbal1 and
Mohammad Athar*2, 3
1Department of Botany, University of Karachi, Karachi- 75270, Pakistan.
2Department of Food Science & Technology, University of Karachi, Karachi- 75270, Pakistan.
3California Department of Food and Agriculture, 3288 Meadowview Road, Sacramento, CA 95832, USA.
*Corresponding Author’s Email: atariq @ cdfa. ca. gov
The effect of different concentrations of rubber crumb collected from the vicinity of rubber factories situated in S.I.T.E area was studied on the seedling growth of Pithecellobium dulce (Roxb) Benth., Adenanthera pavonina L. and Pisum sativum L. under natural environmental conditions. All the treatments exhibited inhibition of most of growth parameters (shoot length, seedling length, number of leaves, shoot dry weight, leaf dry weight, total plant dry weight and specific leaf area) in P. dulce. However, A. pavonina showed improved growth in root length, number of leaves, root dry weight, shoot dry weight, leaf dry weight, total dry weight, root/shoot ratio and leaf weight ratio. P. sativum was the most affected plant as compared to P. dulce and A. pavonina and showed highly declined growth under all the rubber crumb treatments. P. sativum plants treated with 30% rubber crumb did not survive after two weeks of growth. This showed that the soil contaminated with rubber crumb drastically affected the plant growth. The findings of this research could be helpful in monitoring and controlling the pollutant levels in soils of the industrial areas. Such information could also be useful for landscaping and urban planning.
Keywords: Rubber crumb, pollution, seedling growth, leguminous plants, landscaping.