Abstract

EFFECT OF ORGANIC AND INORGANIC FERTILIZER ON GROWTH, PHENOLIC COMPOUNDS AND ANTIOXIDANT ACTIVITY OF SOLANUM NIGRUM .L

J.Alphonse Ligoriya Mary and T. Nithiya*

ABSTRACT

The application of organic and inorganic fertilizer to the soil is considered as good agricultural practice because it improves the fertility of the soil and plant quality. The objective of this study is to compare the effect of organic (vegetable waste, cattle dung) and inorganic fertilizer (NPK) on Solanum nigrum. The experiment was arranged in a randomized design in three replicates. Parameters assess include leaf area, height, leaf length, nutrient composition, phytochemicals and antioxidant activity on leaf of Solanum nigrum. The application of cattle dung and vegetable waste gave plants with the greatest plant height, leaf area and surface length. The mean values recorded for these parameters were 38±3.16, 10.5±2.18cm & 5.5±1.58cm for organic fertilizer and 36±3.14 cm 8.0±1.12cm & 4.0±1.48cm for inorganic fertilizer. Organic manuare produced higher effect on carbohydrate, protein, amino acid, vitamin c and chlorophyll content in the leaf of Solanum nigrum when compared with NPK fertilizer. Mean values recorded for the above parameters in leaf sample were 30.0±2.41, 1.93±1.93, 3.31±0.65, 2.53±0.72, 1.24±0.53mg/100g compared with values of 10.0±2.26, 1.25±1.62, 2.0±0.52, 2.26±0.80, 1.98±0.40mg/100g respectively for inorganic fertilizer. Effect of organic fertilizer in plant phytochemicals was higher than that of inorganic fertilizer. Values obtained for alkaloids, flavonoids, tannins, saponins and total phenol in organic treated leaf samples were 0.21±0.80, 0.9±0.53, 0.52±0.16, 0.34±0.36, 0.26±0.18mg/100g, respectively as against values of 0.2±0.32, 0.5±0.46, 0.4±0.12, 0.29±0.26, 0.8±0.14mg/100g for inorganic fertilizer. Organic fertilizer treated plants have higher antioxidant activity than the inorganic fertilizer. Mean values recorded for leaf sample The application of organic and inorganic fertilizer to the soil is considered as good agricultural practice because it improves the fertility of the soil and plant quality. The objective of this study is to compare the effect of organic (vegetable waste, cattle dung) and inorganic fertilizer (NPK) on Solanum nigrum. The experiment was arranged in a randomized design in three replicates. Parameters assess include leaf area, height, leaf length, nutrient composition, phytochemicals and antioxidant activity on leaf of Solanum nigrum. The application of cattle dung and vegetable waste gave plants with the greatest plant height, leaf area and surface length. The mean values recorded for these parameters were 38±3.16, 10.5±2.18cm & 5.5±1.58cm for organic fertilizer and 36±3.14 cm 8.0±1.12cm & 4.0±1.48cm for inorganic fertilizer. Organic manuare produced higher effect on carbohydrate, protein, amino acid, vitamin c and chlorophyll content in the leaf of Solanum nigrum when compared with NPK fertilizer. Mean values recorded for the above parameters in leaf sample were 30.0±2.41, 1.93±1.93, 3.31±0.65, 2.53±0.72, 1.24±0.53mg/100g compared with values of 10.0±2.26, 1.25±1.62, 2.0±0.52, 2.26±0.80, 1.98±0.40mg/100g respectively for inorganic fertilizer. Effect of organic fertilizer in plant phytochemicals was higher than that of inorganic fertilizer. Values obtained for alkaloids, flavonoids, tannins, saponins and total phenol in organic treated leaf samples were 0.21±0.80, 0.9±0.53, 0.52±0.16, 0.34±0.36, 0.26±0.18mg/100g, respectively as against values of 0.2±0.32, 0.5±0.46, 0.4±0.12, 0.29±0.26, 0.8±0.14mg/100g for inorganic fertilizer. Organic fertilizer treated plants have higher antioxidant activity than the inorganic fertilizer. Mean values recorded for leaf sample

Keywords: Solanum nigrum, Nutritional status, phytochemicals & In vitro antioxidant activity. Organic and inorganic fertilizer.