EFFECT OF CHEMICAL AND BIO FERTILIZATION ON THE GROWTH AND L-ASCORBIC ACID CONTENT OF MORINGA OLEIFERA L. PLANTS

Document Type : original papers

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Horticulture Department, Faculty of Agriculture, Menoufia Univ., Shibin El-Kom

Abstract

Two field experiments were conducted at the Experimental Farm of Faculty of Agriculture, Menoufia University during two successive seasons 2016 and 2017 to evaluate the effect of different N2-fixing bacterial strains such as Azospirillium lipoferum, Azotobacter chroococcum and Bacillus polymyxa individually or in combination with urea fertilization rates (0.0, 50, 100 and 200 kg/fed/season). The data reveals that the treated plants with Azotobacter chroococcum gave the highest values of plant height and mean number of branches / plant and consequently heavier fresh weight of plant in addition, L- ascorbic acid content followed by Bacillus polymyxa in the three cuts in both growing seasons. In addition, the vegetative growth parameters as well as L-ascorbic acid gradually increased with increasing urea up to 100 kg/fed/season in the two experimental seasons. Furthermore, the application of Azotobacter chroococcum plus the moderate level of urea (100 kg/fed/season) gave the best values in terms of vegetative growth parameters as well as L-ascorbic acid in comparison with the other interaction treatments and the control in the two experimental seasons.

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