BIOCHEMICAL COMPOSITION AND ANTIOXIDANT STATUS OF SOYBEAN BASED CROPPING SYSTEM GROWN UNDER ORGANIC AND INORGANIC FARMING CONDITIONS
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Date
2013
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Punjab Agricultural University
Abstract
A field experiment was conducted during kharif and rabi seasons of 2011-13 to evaluate the effect of organic (Farmyard manure; FYM) and inorganic (recommended dose of Nitrogen and Phosphorus) fertilization on biochemical composition of soybean, chickpea and wheat grains. Soybean seed quality parameters, such as total soluble proteins, total soluble sugars, tannins, glutathione content and orthodihydroxy phenols were improved due to the application of FYM @ 5t ha-1 + 50% recommended dose of NP whereas trypsin inhibitor activity and total phenolic content decreased as compared to treatments where FYM or recommended dose of NP were given alone. During rabi season, highest total soluble proteins, vitamin C, tocopherol content and average relative quantity of storage protein subunits (55.7, 48.8 and 11-13 kDa) in wheat were observed in combined treatment of FYM @ 10t ha-1 + 100% recommended dose of NP whereas starch content was maximum in treatment with FYM @ 5t ha-1 + 50% recommended dose of NP. In chickpea seeds, highest total soluble proteins, free amino acids, total soluble sugars and trypsin inhibitor activity were observed in FYM @ 10t ha-1 treatment whereas flavonols and glutathione content were significantly higher in FYM @ 10t ha-1 + 100% recommended dose of NP as compared to other treatments. Results of present study suggests that different organic and inorganic farming treatments alone or in combination affected the contents of various nutrients and antinutrients to some extent but the protein and oil quality of soybean and chickpea seeds did not vary significantly in these treatments. Soybean grown under organic and inorganic mixture may benefit human health more than inorganically and organically grown produce due to presence of higher amounts of bioactive compounds
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Soybean, organic and inorganic