Response of Amaranthus Cruentus to Some Amendments on a Sandy-Loam Alfisol Contaminated by Heavy Metals


  • Modupe Mary Okunlola university of Ibadan
  • Ezekiel Akinkunmi Akinrinde Department of Agronomy University of Ibadan, Ibadan


Contamination, Heavy metals, Amaranth, Industrial waste, Metal uptake, Fertilizers


Indiscriminate dumping of industrial wastes often leads to heavy metal accumulation in soils but organic matter amendments may ameliorate the resulting toxicity in crop production. This study evaluated the effectiveness of eight fertilizer treatments (Control; Urea, U; Organic Fertilizer, OF; Single Superphosphate, SSP; SSP+U; OF+U and OF+SSP; OF +SSP+U) in reducing heavy metal uptake by Amaranthus cruentus (L) on contaminated alfisols .Treatments were replicated three times in  completely randomized design. Sole and combined treatments (organic and/or inorganic) significantly (p<0.05) enhanced crop performance while heavy metal tissue concentration and uptake by plants were low compared to Control. Plants treated with OF+U gave the least concentration of tissue Pb (647.00 mg/kg), Zn (198.50 mg/kg) and Cu (16.50 mg/kg) while control plants had the highest corresponding values of  2562.50 mg/kg, 695.00 mg/kg and 66.00 mg/kg. Mineral fertilizer-fortified organic manures have great potential in the production of amaranth plants devoid of heavy metal poisoning.


Author Biography

Modupe Mary Okunlola, university of Ibadan

AgronDepartment of Agronomy,University of Ibadan.




Cao XD, Ma QY, Chen M, Singh SP, Harris WG. 2002. Impacts of phosphate amendments on lead biogeochemistry at a contaminated site. Environ Science Technology, 24: 5296–5304.

Cao XD, Ma QY, Rhue DR and Appel CS. 2004. Mechanisms of lead, copper and zinc retention by phosphate rock. Environ Pollution, 131: 435–444.

Clemente R., Escolar, A and Bernal M.P. 2006. Heavy metal fractionating and organic matter mineralization in contaminated calcareous soil amended with organic materials. Bioresourse Technology 97:1894-1901.

FAO/WHO 1978. List of maximum levels recommended for contaminants by joint FAO/WHO codex. Alimentaries Commission 3rd Series Rome, FAO/WHO.CAL/FAL 4-1978.

FEPA 1991. National interim guidelines and standards for industrial effluents, gaseous emission and hazardous wastes management in Nigeria, pp 28-30.

Kachenko, A.C. and B. Singh 2006. Heavy metal contamination in vegetables grown in urban and metal smelter contaminated sites in Australia. Water Air Soil Pollution. 169, 101 – 123.

Long X. X., Yang X. E., Ni. W. Z., Ye Z. Q., He, Z. L., Calvert D. V., Stoffella, J. P. 2003. Assessing zinc thresholds for phytotoxicity and potential dietary toxicity in selected vegetable crops. Commun Soil Sci Plant Anal. 34 (9 & 10):1421–1434.

M. Mench, J. Vangronsveld, C. Beckx, and A. Ruttens, 2006. Progress in assisted natural remediation of an arsenic contaminated agricultural soil, Environmental Pollution, vol. 144, no. 1, pp. 51–61.

Nicklow, C. W., P. H. Comas-Haezebrouck and W. A. Feder, 1983. Influence of varying soil Lead levels on Lead uptake of leafy and root vegetables. J. Am. Soc. Hortic. Sci. 108: 193-195.

Singh, C.M., P.K. Sharma, P. Kishor, P.K. Mishra, A.P. Singh, R. Verma and P. Raha, 2011. Impact of integrated nutrient management on growth, yield and nutrient uptake by wheat (Triticum aestivum L.). Asian J. Agric. Res., 5: 76-82.

Singh, Anita, Agrawal, Madhoolika and Marshall, Fiona M., 2010. The role of organic vs. inorganic fertilizers in reducing phytoavailability of heavy metals in a wastewater-irrigated area. Ecological Engineering, 36 (12). pp. 1733-1740.

Singh, S. and M. Kumar, 2006. Heavy metal load of soil, water and vegetables in peri-urban Delhi Environ. Monitor. Assess., 120: 79-91.

XieZheng-miao, Wang Bi-ling, Sun Ye-fang, Li Jing, 2006. Field demonstration of reduction of lead availability in soil and cabbage (Brassica Chinensis L.) contaminated by mining tailings using phosphorus fertilizers .Journal of Zhejiang University SCIENCE B Vol. 7 No. 1 p. 43-50.

Yang X. E., Long X. X., Ni W. Z, Ye Z. Q., He ZL, Stoffella P. J, Calvert D V. 2002. Assessing copper thresholds for phytotoxicity and potential dietary toxicity in selected vegetables crops. J Environ Sci Health.; B37 (6):625–635.




How to Cite

Okunlola, M. M., & Akinrinde, E. A. (2013). Response of Amaranthus Cruentus to Some Amendments on a Sandy-Loam Alfisol Contaminated by Heavy Metals. Asian Journal of Agriculture and Food Sciences, 1(5). Retrieved from