Vol. 5, Issue 2 (2017)
Soil physico-chemical properties, productivity and accumulation of heavy metals in fenugreek (Trigonella foenum-graceum L.), and their availability in soil as affected by Mussoorie rock phosphate
Author(s): Mohammad Halim Khan, KP Kushwaha and T Thomas
Abstract: Two sets of field experiment on fenugreek (Trigonella foenum-graceum) with cultivar pusa early bunching, was conducted during winter (rabi) seasons of 2009-10 and 2010-11 at the Crop Research Form, Department of soil science, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad to evaluate the effect of Mussoorie rock phosphate, on soil physico-chemical properties (bulk density, particle density, pH, EC, organic carbon, CEC, available N, P, K, exchangeable Ca, Mg), productivity and accumulation of heavy metals (Cd, Pb, Cr & Zn) in fenugreek and their availability in soil. The experiment was laid out in randomized block design with four levels of MRP (0, 100, 150 and 200 kg ha-1) and replicated five times. The results revealed that green foliage and dry matter yield of fenugreek significantly increased by application of MRP. Highest green foliage (92.56 q ha-1) and dry matter (19.11 q ha-1) yields were noticed in the treatment receiving 200 kg ha-1 MRP, whereas plant content of heavy metals were reduced from 0.13 to 0.12 ppm Cd, 0.20 to 0.17 ppm Pb, 0.24 to 0.24 ppm Cr, and 0.37 to 0.34 ppm Zn with every enhancing levels of MRP from 0-200 kg ha-1. Higher reduction of these toxic metals content in fenugreek plant were recorded in treatment receiving 200 kgha-1 MRP which were lower than control & below the critical levels of toxicity. The bulk density, particle density, pH, EC & organic carbon content of the post harvest soil were not affected but CEC increased significantly from 15.57 to 15.68 cmol kg-1 with increasing levels of MRP. Soil amended with MRP resulted in significant increased in available N, P, K, and exchangeable Ca & Mg in post harvest soil. The maximum value of available N (197.79 kg ha-1), P (30.10 kg ha-1), K (246.95 kg ha-1), exchangeable Ca (4.87 meq 100-1g) and Mg (3.59 meq 100-1g soil) were recorded with treatment where 200 kg ha-1 MRP was applied which were over the control. There was a reduction of soil content of DTPA-extractable micronutrients & heavy metals content of soil in comparison to control with the application of MRP and lower value of DTPA-Fe (3.37 ppm), Zn (0.84 ppm), Cd (0.57 ppm), Pb (0.65 ppm) and Cr (0.90 ppm) were recorded with 200 kg ha-1 MRP which were lower than control.
Pages: 24-28 | 1646 Views 90 Downloads
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How to cite this article:
Mohammad Halim Khan, KP Kushwaha, T Thomas. Soil physico-chemical properties, productivity and accumulation of heavy metals in fenugreek (Trigonella foenum-graceum L.), and their availability in soil as affected by Mussoorie rock phosphate. Int J Chem Stud 2017;5(2):24-28.
