ABSTRACT
Trace elements in two varieties of spinach cultivated in soil with different levels of added iron were determined. Addition of iron to soil decreased potassium, sodium and magnesium contents in spinach markedly (p < 0.05), while the contents of zinc, manganese and copper in spinach were not significantly altered (p > 0.05). Differential behavior of spinach varieties was found in the zinc, manganese and sodium contents.
Subject(s)
Iron/analysis , Soil/analysis , Spinacia oleracea/chemistry , Trace Elements/analysis , Analysis of Variance , Genetic Variation , Iron/physiology , Magnesium/analysis , Manganese/analysis , Potassium/analysis , Sodium/analysis , Soil/standards , Spinacia oleracea/genetics , Spinacia oleracea/physiology , Zinc/analysisABSTRACT
In vitro availability of iron along with ascorbic acid, oxalic acid and phosphorus contents of two varieties of spinach (Pusa Jyoti and Allgreen) cultivated in soil with different levels of added iron was determined. Addition of graded levels of iron to soil markedly increased the total iron and phosphorus contents and significantly decreased the bio-availability of iron, ascorbic acid and oxalic acid contents of spinach. Ascorbic acid and oxalic acid contents markedly exerted a positive influence while phosphorus exerted a negative influence on the bio-availability of iron.
