Reddy NS, Bhatt G. (2001). Contents of minerals in green leafy vegetables cultivated in soil fortified with different chemical fertilizers. Plant Foods Hum Nutr. 56(1):1-6.
Content of selected minerals in spinach (Spinacea oleracea) and ambat chuka (Rumex vesicarius/yellow dock) cultivated in soil fortified with different chemical fertilizers was determined in a pot experiment. Addition of NPK (Nitrogen, Phosphorus and Potassium) fertilizer along with micronutrients, iron and zinc, enhanced the concentration of zinc, iron and magnesium in selected green leafy vegetables markedly (p < 0.05), while the concentration of copper was not altered significantly (p > 0.05). Potassium content in the green leafy vegetables was not affected (p > 0.05) by the addition of chemical fertilizers to soil. Spinach and ambat chuka differed remarkably in their mineral contents. Contents of potassium, zinc and copper were significantly high in spinach, while the contents of magnesium and iron were markedly high in ambat chuka (p < 0.05).
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