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Asian Journal of Plant Sciences
  Year: 2015 | Volume: 14 | Issue: 1 | Page No.: 34-39
DOI: 10.3923/ajps.2015.34.39
 
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Comparative Study of the Effects of Organic and Inorganic Fertilizer on Nutritional Composition of Amaranthus spinosus L.
A.A.J. Mofunanya, J.K. Ebigwai, O.S. Bello and A.O. Egbe

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 (saw dust, poultry droppings and cow dung: 500 kg ha‾1) and inorganic fertilizer (NPK: 500 kg ha‾1) on the mineral composition of Amaranthus spinosus on a plot of land in Akparabong, Ikom Local government Area of Cross River State. The experiment was arranged in a randomized block design in three replicates. Parameters assessed include proximate, mineral, anti nutrient, vitamins A and C. Data were analyzed using student t-test. Results were also expressed as percentage difference and differences between mean values were determined at 5% probability. Phytochemicals (percentage crude alkaloids, tannins, saponins, flavonoids and reducing compounds) were higher in organic leaf samples with mean values of 0.84±0.02, 0.96±0.2, 2.90±0.02, 15.20±0.2 and 1.50±0.02 mg/100 g, respectively compare to values of 0.68±0.02, 0.85±0.01, 2.80±0.01, 14.80±0.02 and 1.32±0.01 mg/100 g. Organic fertilizer resulted in significantly (p<0.05) higher crude protein (7.90±0.01) fibre (3.20±0.2), ash (3.10±0.2) and fat (0.48±0.2) in leaf sample compared to values of 5.60±0.01, 2.60±0.02, 2.80±0.1 and 0.43±0.1 g/100 g, respectively for inorganic fertilizer. Mean values recorded for Mg, Cu, Zn, K, Fe, Ca, Na and P for organic fertilizer in leaf sample were 4.45±0.3, 0.03±0.2, 0.03±0.1, 7.60±0.1, 0.12±0.02, 2.94±0.2, 6.50±0.03 and 2.20±0.03 mg/100 g, respectively as against values of 3.41±0.1, 0.02±0.01, 0.02±0.01, 5.30±0.01, 0.09±0.02, 2.80±0.2, 5.70±0.01 and 1.90±0.01 mg/100 g for inorganic fertilizer. Tannins were present in leaf samples but absent in all other plant parts. Mean values for Cu and Zn were the same in all the plant parts studied for organic and inorganic fertilizer. Results obtained for anti-nutrients and vitamins followed similar trends. The experimental results of this study have showed that organic fertilizer produced higher nutritional values on A. spinosus whole plant (leaf, stem, inflorescence and root) when compared with inorganic fertilizer.
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How to cite this article:

A.A.J. Mofunanya, J.K. Ebigwai, O.S. Bello and A.O. Egbe, 2015. Comparative Study of the Effects of Organic and Inorganic Fertilizer on Nutritional Composition of Amaranthus spinosus L.. Asian Journal of Plant Sciences, 14: 34-39.

DOI: 10.3923/ajps.2015.34.39

URL: https://scialert.net/abstract/?doi=ajps.2015.34.39

COMMENTS
16 June, 2020
hussien ali seid:
I thank you
 
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