Influence of Soil Amendments on Heavy Metal Accumulation in Crops on Polluted Soils of Bangladesh

While strategizing towards achieving improved soil fertility for sustainable tropical crop production, timely application of fertilizers on regular basis alone is not the University of Technology, Ogbomoso, Oyo State, Nigeria best approach, particularly on polluted soils. However, seeking for reliable natural, biological and environment friendly means of ensuring effective riddance of toxic elements or heavy metals from tropical agricultural soils is equally a worthwhile technology. An open-field potted experiment was conducted during early raining season of 2016 (March-July), at the Teaching and Research Farms of Oyo State College of Agriculture and Technology, Igboora, to investigate the effect of spent engine oil polluted soil conditions on performance and heavy metal accumulation potentials of Ceratothecasesamoides. Spent engine oil was applied at different concentrations (0.0ml, 50.0ml, 100.0ml, 150.0ml, and 200.0ml to each pot containing 7kg soil. Four pots per treatments were used. The trial was arranged in Completely Randomised Design (CRD), replicated three (3) times. Data were collected on growth parameters (number of leaves, plant height, stem girth, leaf length and leaf breadth). The data were subjected to analysis of variance (ANOVA) and Duncan Multiple Range Test (DMRT) was used to the means. Pre and post-cropping soil analyses were carried out, for determination of nutrient concentrations. Also, after the termination of the experiment, plant samples were collected from each of the pots for oven-drying followed by determination of nutrient concentrations (including the heavy metals). Oil pollution significantly affected growth and heavy metal accumulation of the test-crop. Growth decreases with increasing rate of lubricant application, while the heavy metal concentrations in the test-crop increased with increasing concentrations of the applied spent engine oil. Thus, Ceratothecasesamoides is a wild plant which could be easily exploited for its heavy metals hyper-accumulative or phyto-extractive potentials, so as to reclaim heavy metals polluted soils from toxicity, for sustainable crop production.

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Effects of Soil Amendments on the Early Growth and Heavy Metal Accumulation of Brassica campestris ssp. Chinensis Jusl. in Heavy Metal-contaminated Soil

Korean Journal of Soil Science and Fertilizer ◽

10.7745/kjssf.2012.45.6.961 ◽

2012 ◽

Vol 45 (6) ◽

pp. 961-967 ◽

Cited By ~ 10

Author(s):

Min-Suk Kim ◽

Namin Koo ◽

Jeong-Gyu Kim ◽

Jae-E. Yang ◽

Jin-Su Lee ◽

...

Keyword(s):

Heavy Metal ◽

Contaminated Soil ◽

Metal Accumulation ◽

Brassica Campestris ◽

Soil Amendments ◽

Early Growth ◽

Heavy Metal Accumulation

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Soil Amendments and Arbuscular Mycorrhiza Influenced the Growth and Heavy Metal Accumulation of Colosphospermum Mopane (Kirk Ex Benth.) In Heavy Metal Contaminated Soil

Soil and Sediment Contamination An International Journal ◽

10.1080/15320383.2021.1910623 ◽

2021 ◽

pp. 1-16

Author(s):

Trust Manyiwa ◽

Venecio U. Ultra

Keyword(s):

Heavy Metal ◽

Arbuscular Mycorrhiza ◽

Contaminated Soil ◽

Metal Accumulation ◽

Soil Amendments ◽

Heavy Metal Accumulation

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A review on heavy metal accumulation and toxicity in biotic and abiotic components

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/889/1/012062 ◽

2021 ◽

Vol 889 (1) ◽

pp. 012062

Author(s):

Manmeet Kaur ◽

Akriti Sharma ◽

Aditya

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Human Health ◽

Metal Accumulation ◽

Anthropogenic Activities ◽

Nutrient Status ◽

Heavy Metal Accumulation ◽

Metal Exposure ◽

Vegetable Crops ◽

Polluted Soils

Abstract Pollutants in the environment remains to be a global issue and among the greatest challenges confronting mankind. Among the various kinds of pollutants, heavy metals have drawn a lot of attention owing to their toxicity. Heavy metals are recognized to be naturally existing, however they are introduced in considerable quantities in many environmental compartments due to anthropogenic activities. When added into the atmosphere eventually these find their way back to the ground, contaminating soils and water. These metals enter into the plant system through a variety of physiological mechanisms, affecting plant growth and development. The possible entry of these elements into the ecosystem has been attributed to the increased levels of heavy metals in the ecosystem through direct intake from polluted soils, vegetables grown on polluted soils, or drinking wastewater that has infiltrated through such soils. Heavy metal accumulation arises when vegetable crops are grown in an environment contaminated with heavy metal, further entering and magnifying in the food chain. Human health is jeopardised by the presence and consumption of potentially harmful heavy metals in biota and groundwater. Heavy metal exposure can cause a number of serious human health implications, including kidney disease, respiratory problems, neurological disorders, and cancer. These heavy metals have an impact not merely on plants and humans, but also on soil health, water sources, soil nutrient status, and other aquatic organisms. These are irreversibly introduced in the environment since they cannot be degraded and are typically present in trace amounts, yet even at low levels, many of them can be harmful. The increased levels of heavy metals in the environment are hence currently prompting increased concern and need improvised remedial measures.

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