Evaluation of Soil Amended with Graded Levels of Craseonycteris thonglongyai Dung on the Improvement of Mineral Element Constituents in the Leaf of Cnidoscolus aconitifolius (Tree Spinach) doi.org/10.26538/tjnpr/v4i11.29
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Abstract
Mineral elements are among the micronutrients required for maintenance of good health and general well-being of individual as they play critical roles in enhancing immune system against infectious diseases. The concentrations of minerals in plant among other factors depend on the nutrient contents and compositions of soil. It is for this reason pot experiment was conducted to investigate the influence of graded levels of Craseonycteris thonglongyai dung on the concentrations of Fe, Mg, Zn, Ca, Mn, Cu, Na and K) in Cnidoscolus aconitifolius. The different levels of C. thonglongyai dung used were control (0 g), 25, 75, 100 and 125 per 20 kg soil. The
leaves of C. aconitifolius were analysed at market maturirty for its mineral contents using Atomic Absorption Spectrophotometer (AAS) except that K and Na were analysed with Flame Photometer. The application of C. thonglongyai dung significantly (p < 0.05) increased the concentrations of Fe, Mg, Cu, Mn, Ca, Zn and K in the leaf of C. aconitifolius with increase application of the dung. Whereas treatment with the dung above 50 g significantly (p<0.05) decreased Fe, Cu and Zn contents, the concentrations of Mg, Ca and K did not differ significantly (P>0.05) with increasing concentration of the dung to 125 g. Similarly, application of different levels of the dung had no significant (P > 0.05) effect on Na in C. aconitifolius. The study concludes that moderate application of C. thonglongyai dung (particularly 50 g per 20 kg soil) enhance bioaccumulation of mineral contents in Cnidoscolus aconitifolius.
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