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Impacts of oxalic acid-activated phosphate rock and root-induced changes on Pb bioavailability in the rhizosphere and its distribution in mung bean plant
2021
Rasool, Bilal | ur-Rahman, Mahmood | Adnan Ramzani, Pia Muhammad | Zubair, Muhammad | Khan, Muhammad Asaf | Lewińska, Karolina | Turan, Veysel | Karczewska, Anna | Khan, Shahbaz Ali | Farhad, Muniba | Tauqeer, Hafiz Muhammad | Iqbal, Muhammad
Rhizosphere acidification in leguminous plants can release P from the dissolution of phosphate compounds which can reduce Pb bioavailability to them via the formation of insoluble Pb compounds in their rhizosphere. A soil polluted from Pb-acid batteries effluent (SPBE), having total Pb = 639 mg kg⁻¹, was amended with six different rates (0, 0.5, 1, 2, 4 and 6%) of oxalic acid-activated phosphate rock (OAPR) and their effects on pH, available P and bioavailable Pb concentrations in the rhizosphere and bulk soils of mung bean plant were evaluated. Furthermore, the effects of these variant OAPR rates on Pb concentrations in plant parts, bioaccumulation factor (BAF) and translocation factor (TF) for Pb in grain and traits like productivity, the activities of antioxidant enzymes, and grain biochemistry were investigated. Results revealed that increasing rates of OAPR significantly increased pH values and available P while decreased bioavailable Pb concentrations in the rhizosphere over control. The highest dissolution of P in the rhizosphere was with 4 and 6% OAPR rates. As a result, the formation of insoluble Pb compounds affected on reduced Pb concentrations in shoots, roots, and grain in addition to lower grain BAF and TF values for Pb over control. Likewise, the highest plant productivity, improved grain biochemistry, high Ca and Mg concentrations, least oxidative stress, and enhanced soil alkaline phosphatase activity were found with 4 and 6% OAPR rates. The OAPR 4% rate is suggested for reducing grain Pb concentration, cell oxidative injury, and improving grain biochemistry in mung bean.
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1998
Welsch-Pausch, K. | McLachlan, M.S. (Ecological Chemistry and Geochemistry, University of Bayreuth, 95440 Bayreuth (Germany))
Application of nitrogen in production and post-production systems of agriculture and its effect on environment in India
1998
Shukla, B.D. | Misra, A.K. | Gupta, R.K. (Central Institute of Agricultural Engineering, Nabi Bagh, Berasia Road, Bhopal-462038 (India))
Effects of elevated CO2, nitrogen supply and tropospheric ozone on spring wheat-II. Nutrients (N, P, K, S, Ca, Mg, Fe, Mn, Zn)
1997
Fangmeier, A. | Gruters, U. | Hogy, P. | Vermehren, B. | Jager, H.J. (Institut fur Pflanzenokologie, Heinrich-Buff-Ring 38, D-35392 Giessen (Germany))
Thallium in French agrosystems-II. Concentration of thallium in field-grown rape and some other plant species
1997
Tremel, A. | Masson, P. | Garraud, H. | Donard, O.F.X. | Baize, D. | Mench, M. (Unite d'Agronomie, INRA, Centre Bordeaux-Aquitaine, BP 81, F-33883 Villenave d'Ornon (France))
Exposure of oats, Avena sativa L., to filtered and unfiltered air in open-top chambers: effects on grain yield and quality
1994
Pleijel, H. | Skarby, L. | Ojanpera, K. | Sellden, G. (Swedish Environmental Research Institute (IVL), Box 47086, S-402 58 Goteborg (Sweden))
Effect of soil pH on availability to crops of metals in sewage sludge-treated soils. II. Cadmium uptake by crops and implications for human dietary intake
1994
Smith, S.R. (Water Research Centre, Medmenham, Marlow, Bucks. SL7 2HD (United Kingdom))
