alexa Availability of Three Phosphorus Fertilizers to Corn Grown in Limed Acid-Producing Mine Tailings
ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
Open Access

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Research Article

Availability of Three Phosphorus Fertilizers to Corn Grown in Limed Acid-Producing Mine Tailings

Aajjane A1*, Karam A2 and Parent LE2
1 Université Chouaïb Doukkali, Faculté des Sciences, Equipe des Sciences du Sol, El Jadida, Morocco
2 E.R.S.A.M., Département des Sols et du Génie agroalimentaire, FSAA, Université Laval, (QC) G1K 7P4, Canada
Corresponding Author : Aajjane A
Université Chouaïb Doukkali
Faculté des Sciences, Equipe des Sciences du Sol
El Jadida, Morocco
Tel: 212-664164940
Email: [email protected]
Received September 21, 2013; Accepted May 23, 2014; Published May 28, 2014
Citation: Aajjane A, Karam A, Parent LE (2014) Availability of Three Phosphorus Fertilizers to Corn Grown in Limed Acid-Producing Mine Tailings. J Bioremed Biodeg 5:229. doi:10.4172/2155-6199.1000229
Copyright: © 2014 Aajjane A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Liming can modulate phosphorus (P) availability to plants growing in acid-forming media. The objectives of this study were to determine the effects of lime and phosphorus rates on corn (Zea mays L.) grown under greenhouse conditions on an acid-producing mine tailing, and to evaluate P desorption from the mine tailing after harvest. The acid-sulfide tailing (pH 2.65) collected from the Solbec-Cupra mine in Quebec was limed using CaCO3 to theoretical pH values of 5 (11 g/kg), 6 (17 g/kg) and 7 (30 g/kg) prior to corn production. Phosphorus was thoroughly mixed with the tailing at rates of 0, 22.4, 44.8 and 89.6 mg P/kg. Commercial peat-shrimp waste compost; a commercial bone flour fertilizer and reagent-grade KH2PO4 were used as P sources. Corn (Zea Mays L. cv. 'Pride 1122') was grown for 50 days after emergence. After harvest, the mean tailing pH values varied from 4.20 to 7.20. Dry matter yield of plant tops was significantly affected by lime and phosphorus treatments. Corn yields were significantly correlated with pH, salinity index (electrical conductivity of aqueous extracts) and ammonium acetate-extractable Ca and Mg. In all P treatments, the highest yield was obtained with plot receiving 44.8 mg P/kg and lime rate to achieve pH 6 (17 g of CaCO3/kg). In general, mineral composition of the tops did not show toxic accumulation of trace metals. The P extracted by Na2EDTA from some tailing samples was a time-dependent process. Results from another P desorption study indicated that the amounts of DTPA-TEA-CaCl2 (pH 7.3) extractable substrate P increased with temperature. The DTPA-extracted P data from the 30 tailing samples over a period of 1 to 48 hours were best described by an empirical first-order-rate equation using t0.5 instead of t as the time variable. Liming and P fertilization were determinant factors for the growth of corn in acid sulfide tailings.

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